jcharts-users — For users of jCharts

Re: [jCharts-users] radar chart support

[Nathaniel G. A. <nat...@ya...>]

ok. This trunk is alpha quality code so there are going to be problems.  I have not had any time
to work on this for a while now, unfortunately.  



--- Chris Ward <cw...@go...> wrote:

> I tried the radar chart support from the krysalis-jcharts 1.0 trunk.
> 
> I wanted to let you know that using the org.krysalis.jcharts.test.RadarTestDriver, the legend is
> not showing up despite what appears to me to be code setting the legend to the right side with 1
> column.
> 
> I was also wondering if there is, or if there are any plans to support the radar graph having
> just points on the graph instead of the lines (connecting where the points would be), or the
> filled in areas?
> 
> The second to that would be if only points were to be displayed, could it support the Double.NaN
> like some of the other graphs so that a point would not show up? I tried that, and the current
> graph draws lines into the top left corner.
> 
> These aren't demands, just wondering what the direction of the radar graph would be in the eyes
> of the people implementing it.
> 
> Chris
> 
> 
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Re: [jCharts-users] RE: Re: RE: Scale of a Xaxis NullPointerException (Nathaniel G. Auvil)

[Nathaniel G. A. <nat...@ya...>]

You can not use two Data Axis on a Line Chart.  You should use an XY Chart.


--- jle...@ne... wrote:

> Here is the code i use for generate the graphe
> 
>    //axe des x données    
>     String[] xAxisLabels=this.x; //{ "1998", "1999", "2000", "2001", "2002", "2003", "2004" };
>     //titre des axe
>     String xAxisTitle= "Jours";
>     String yAxisTitle= "Valeurs";
>     //titre du graphe
>     String title= "Glycémie";
> 
>     DataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle, yAxisTitle, title );
> 
>     //Données en y
>     double[][] data= this.y;//new double[][]{ { 250, 45, -36, 66, 145, 80, 55 } , { 150, 15, 6,
> 62, -54, 10, 84 }}; //
>     //legend
>     //this.maxJour
>     String[] legendLabels= new String[data.length];
>      Paint[] paints = new Paint[data.length];
>      Shape[] shapes = new Shape[data.length];
>      Paint[] outlinePaints= new Paint[data.length];
>      boolean[] fillPointFlags= new boolean[data.length];
> 
>     for (int p=0;p<data.length;p++)
>     {
>         legendLabels[p]=null;
>         paints[p]=Color.blue;
>         shapes[p]=new Ellipse2D.Double(0,0,4,4);
>         fillPointFlags[p]=true;
>         outlinePaints[p]=Color.black;
> 
>     }
> 
>     //creation du grpahe
>     PointChartProperties pointChartProperties= new PointChartProperties( shapes, fillPointFlags,
> outlinePaints );
>     //creation des axe
>     AxisChartDataSet axisChartDataSet= new AxisChartDataSet( data, legendLabels, paints,
> ChartType.POINT, pointChartProperties );
>     dataSeries.addIAxisPlotDataSet( axisChartDataSet );
> 
>     //ajout des deux lignes min et max
>     //data
>     double[][] mini=this.maxmin;
>     //appercu
>     Stroke[]
> strokes={LineChartProperties.DEFAULT_LINE_STROKE,LineChartProperties.DEFAULT_LINE_STROKE};
>     Shape[] shape={null,null};
>     Paint[] p={Color.BLACK,Color.red};
>     String[] legendLabelligne={"Seuil Minimum","Seuil Maximum"};
>     LineChartProperties lineProp= new LineChartProperties(strokes, shape);
>   
>     axisChartDataSet=new AxisChartDataSet(mini,legendLabelligne,p,ChartType.LINE,lineProp);
>     dataSeries.addIAxisPlotDataSet(axisChartDataSet);
> 
>     //mise forme des echelles et du final
>     ChartProperties chartProperties= new ChartProperties();
>    
>     
>     DataAxisProperties x=new DataAxisProperties();
>  DataAxisProperties y=new DataAxisProperties();
>  
>  
>  
>  //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
>  x.setNumItems(this.intervalle);
>  x.setUserDefinedScale(0,24);
>  x.setRoundToNearest(0);
>  
>  //DataAxisProperties dataAxisProperties=
> (DataAxisProperties)axisProperties.getYAxisProperties();
>  //calcul de la meilleur echelle possible
>  int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
>  y.setNumItems(n+2);
>  y.setUserDefinedScale( 0, 100 );
>  y.setRoundToNearest( 0 );
>  
>  
>  AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
>  
>  //ligne pour le cadrillage
>  ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
>  axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
> 
>
axisProperties.getXAxisProperties().setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>  axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
>  axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
>   
>  //generation finale
>  AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700, 500
> );
> 
> 
> >Message: 2
> >Date: Sun, 5 Sep 2004 08:46:19 -0700 (PDT)
> >From: "Nathaniel G. Auvil" <nat...@ya...>
> >Subject: Re: [jCharts-users] RE: Scale of a Xaxis NullPointerException
> >To: jch...@li...
> >Reply-To: jch...@li...
> >
> >
> >Can you attach your code with the data? 
> >
> >
> >
> >
> >--- jle...@ne... wrote:
> >
> >> here is the stacktrace
> >> 
> >> 
> >> java.lang.NullPointerException
> >> render
> >> org.jCharts.axisChart.axis.XAxis
> >> -1
> >> renderChart
> >> org.jCharts.axisChart.AxisChart
> >> -1
> >> render
> >> org.jCharts.Chart
> >> -1
> >> render
> >> org.jCharts.encoders.BinaryEncoderUtil
> >> -1
> >> encode
> >> org.jCharts.encoders.JPEGEncoder13
> >> -1
> >> getGraphe
> >> com.GrapheScatter
> >> 308
> >> main
> >> com.EssaiGrpahe
> >> 46
> >> null
> >> null
> >> 
> >> i use this code for see them
> >> 
> >> System.out.println(f.getClass().getName());
> >>              StackTraceElement stcak[]=f.getStackTrace();
> >>              for (int t=0;t<stcak.length;t++)
> >>              {
> >>                   System.out.println(stcak[t].getMethodName());
> >>                   System.out.println(stcak[t].getClassName());
> >>                   System.out.println(stcak[t].getLineNumber());
> >>              }
> >>              System.out.println(f.getMessage());
> >>              System.out.println(f.getLocalizedMessage());
> >> 
> >> >Message: 2
> >> >Date: Wed, 01 Sep 2004 03:49:22 -0400
> >> >From: jle...@ne...
> >> >To: jch...@li...
> >> >Subject: [jCharts-users] Scale of a Xaxis NullPointerException
> >> >Reply-To: jch...@li...
> >> >
> >> >I don't know why i have a NullPointerException when i use the jpeg encoder
> >> >Is there anaone could help me.....
> >> >It is always the same problem with the scale of the xaxis on a point chart
> >> >
> >> >
> >> >DataAxisProperties x=new DataAxisProperties();
> >> >    DataAxisProperties y=new DataAxisProperties();
> >> >    
> >> >    
> >> >    
> >> >    //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
> >> >    x.setNumItems(this.intervalle);
> >> >    x.setUserDefinedScale(0,24);
> >> >    x.setRoundToNearest(0);
> >> >    
> >> >    //DataAxisProperties dataAxisProperties= (DataAxisProperties)
> >> axisProperties.getYAxisProperties();
> >> >    //calcul de la meilleur echelle possible
> >> >    int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
> >> >    y.setNumItems(n+2);
> >> >    y.setUserDefinedScale( 0, 100 );
> >> >    y.setRoundToNearest( 0 );
> >> > 
> >> >    
> >> >    AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
> >> >    
> >> >    //ligne pour le cadrillage
> >> >    ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
> >> >    axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
> >> >    axisProperties.getXAxisProperties().setShowGridLines(
> >> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
> >> >    axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
> >> >    axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
> >> >   
> >> >    
> >> >    //generation finale
> >> >    AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null,
> 700,
> >> 500 );
> >> >    
> >> >   
> >> >   // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
> >> >    
> >> >     try{
> >> >          JPEGEncoder13.encode(axisChart,1.0f,new
> >> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
> >> >            }
> >> >
> >> >__________________________________________________________________
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> >> >
> >> >
> >> >Message: 6
> >> >Date: Wed, 1 Sep 2004 19:51:29 -0700 (PDT)
> >> >From: "Nathaniel G. Auvil" <nat...@ya...>
> >> >Subject: Re: [jCharts-users] Scale of a Xaxis NullPointerException
> >> >To: jch...@li...
> >> >Reply-To: jch...@li...
> >> >
> >> >
> >> >can you attach the stacktrace?
> >> >
> >> >
> >> >
> >> >--- jle...@ne... wrote:
> >> >
> >> >> I don't know why i have a NullPointerException when i use the jpeg encoder
> >> >> Is there anaone could help me.....
> >> >> It is always the same problem with the scale of the xaxis on a point chart
> >> >> 
> >> >> 
> >> >> DataAxisProperties x=new DataAxisProperties();
> >> >>     DataAxisProperties y=new DataAxisProperties();
> >> >>     
> >> >>     
> >> >>     
> >> >>     //DataAxisProperties datatry =
> (DataAxisProperties)axisProperties.getXAxisProperties();
> >> >>     x.setNumItems(this.intervalle);
> >> >>     x.setUserDefinedScale(0,24);
> >> >>     x.setRoundToNearest(0);
> >> >>     
> >> >>     //DataAxisProperties dataAxisProperties= (DataAxisProperties)
> >> >> axisProperties.getYAxisProperties();
> >> >>     //calcul de la meilleur echelle possible
> >> >>     int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
> >> >>     y.setNumItems(n+2);
> >> >>     y.setUserDefinedScale( 0, 100 );
> >> >>     y.setRoundToNearest( 0 );
> >> >>  
> >> >>     
> >> >>     AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
> >> >>     
> >> >>     //ligne pour le cadrillage
> >> >>     ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
> >> >>     axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
> >> >>     axisProperties.getXAxisProperties().setShowGridLines(
> >> >> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
> >> >>     axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
> >> >>     axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
> >> >>    
> >> >>     
> >> >>     //generation finale
> >> >>     AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null,
> >> 700,
> >> >> 500 );
> >> >>     
> >> >>    
> >> >>    // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
> >> >>     
> >> >>      try{
> >> >>           JPEGEncoder13.encode(axisChart,1.0f,new
> >> >> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
> >> >>             }
> >> >> 
> >> >> __________________________________________________________________
> >> >> Switch to Netscape Internet Service.
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> >> >> 
> >> >> -------------------------------------------------------
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> >> >> _______________________________________________
> >> >> jCharts-users mailing list
> >> >> jCh...@li...
> >> >> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> >> >> 
> >> >
> >> >
> >> >
> >> >        
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> >> >End of jCharts-users Digest
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> >> 
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> >> http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
> >> _______________________________________________
> >> jCharts-users mailing list
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> >
> >
> >
> >        
> >__________________________________
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> >
> >--__--__--
> >
> >Message: 3
> >Date: Mon, 06 Sep 2004 00:10:47 +0200
> >From: Piet Crombach <pie...@ho...>
> >To:  jch...@li...
> >Subject: Re: [jCharts-users] Hi I'm new to jChart - Question: Example how
> > to use data from a MDBS
> >Reply-To: jch...@li...
> >
> >Nathaniel G. Auvil wrote:
> >
> >Yes I did. I found out to generate graphs in my application. And read 
> >also a lot of the mailing list. So far I did not found an adequate 
> >answer for the 2 quetions. I wil find out like I found a lot by trial 
> >and error. But if there is somebody who wrote some code lI asked for it 
> >would be a big help and a lot easier to learn.
> >In the samples and documentation there are only samples for a single 
> >graph on a single page. I want graphs embedded  in some other HTML 
> >dynamically.
> >Now I stream graphs to a temp dir and then I build the page with img 
> >placeholders for the graphs. I understand there is a more elgant 
> >solutiion????
> >
> >>Did you look at the samples and documentation?
> >>
> >>
> >>
> >>--- Piet Crombach <pie...@ho...> wrote:
> >>
> >>  
> >>
> >>>Hi,
> >>>
> >>>I'm trying to do usefull things with jCharts.  The best way to learn is 
> >>>looking at working examples.
> >>>
> >>>I need 2 examples now:
> >>>
> >>>1.    How do I pass data from a RDBMS to a chart
> >>>2.   How to pass a chart to a dynamic *.jsp page.
> >>>
> >>>thanks
> >>>
> >>>
> >>>
> >>>
> >>>-------------------------------------------------------
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> >>>http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
> >>>_______________________________________________
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> >>>
> >>>    
> >>>
> >>
> >>
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> >>  
> >>
> >
> >
> >
> >
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> >
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> >
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Re: [jCharts-users] label for line chart

[Nathaniel G. A. <nat...@ya...>]

this is currently not possible.


--- "Chekkilla, Kirthidhar" <Kir...@bc...> wrote:

> I am new to jchart. Can you guys help me how to create labels/ floating lables for line charts. 
> 
> 
> 
> ck...@ya...
> 
> 
> 
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[jCharts-users] Overhead Transparencies in Bar Charts

[Rod M. <rma...@ve...>]

Just started using JChart and it is very intuitive and easy-to-use. Not
sure if this is a bug or a missing feature but I want to have multiple
bar charts overlayed. I am sharing the same X and Y axis scales which
simplifies things. When trying the "combo" thing it seems that only the
"last" series added is displayed. I am using PNG with translucent colors
(alpha channel) to produce the effect of transparencies using an
overhead projector where you lay one slide on top of the other. Anybody
bean there done that

[jCharts-users] radar chart support

[Chris W. <cw...@go...>]

I tried the radar chart support from the krysalis-jcharts 1.0 trunk.

I wanted to let you know that using the =
org.krysalis.jcharts.test.RadarTestDriver, the legend is not showing up =
despite what appears to me to be code setting the legend to the right =
side with 1 column.

I was also wondering if there is, or if there are any plans to support =
the radar graph having just points on the graph instead of the lines =
(connecting where the points would be), or the filled in areas?

The second to that would be if only points were to be displayed, could =
it support the Double.NaN like some of the other graphs so that a point =
would not show up? I tried that, and the current graph draws lines into =
the top left corner.

These aren't demands, just wondering what the direction of the radar =
graph would be in the eyes of the people implementing it.

Chris

[jCharts-users] RE: Re: RE: Scale of a Xaxis NullPointerException (Nathaniel G. Auvil)

[<jle...@ne...>]

Here is the code i use for generate the graphe

   //axe des x données    
    String[] xAxisLabels=this.x; //{ "1998", "1999", "2000", "2001", "2002", "2003", "2004" };
    //titre des axe
    String xAxisTitle= "Jours";
    String yAxisTitle= "Valeurs";
    //titre du graphe
    String title= "Glycémie";

    DataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle, yAxisTitle, title );

    //Données en y
    double[][] data= this.y;//new double[][]{ { 250, 45, -36, 66, 145, 80, 55 } , { 150, 15, 6, 62, -54, 10, 84 }}; //
    //legend
    //this.maxJour
    String[] legendLabels= new String[data.length];
     Paint[] paints = new Paint[data.length];
     Shape[] shapes = new Shape[data.length];
     Paint[] outlinePaints= new Paint[data.length];
     boolean[] fillPointFlags= new boolean[data.length];

    for (int p=0;p<data.length;p++)
    {
        legendLabels[p]=null;
        paints[p]=Color.blue;
        shapes[p]=new Ellipse2D.Double(0,0,4,4);
        fillPointFlags[p]=true;
        outlinePaints[p]=Color.black;

    }

    //creation du grpahe
    PointChartProperties pointChartProperties= new PointChartProperties( shapes, fillPointFlags, outlinePaints );
    //creation des axe
    AxisChartDataSet axisChartDataSet= new AxisChartDataSet( data, legendLabels, paints, ChartType.POINT, pointChartProperties );
    dataSeries.addIAxisPlotDataSet( axisChartDataSet );

    //ajout des deux lignes min et max
    //data
    double[][] mini=this.maxmin;
    //appercu
    Stroke[] strokes={LineChartProperties.DEFAULT_LINE_STROKE,LineChartProperties.DEFAULT_LINE_STROKE};
    Shape[] shape={null,null};
    Paint[] p={Color.BLACK,Color.red};
    String[] legendLabelligne={"Seuil Minimum","Seuil Maximum"};
    LineChartProperties lineProp= new LineChartProperties(strokes, shape);
  
    axisChartDataSet=new AxisChartDataSet(mini,legendLabelligne,p,ChartType.LINE,lineProp);
    dataSeries.addIAxisPlotDataSet(axisChartDataSet);

    //mise forme des echelles et du final
    ChartProperties chartProperties= new ChartProperties();
   
    
    DataAxisProperties x=new DataAxisProperties();
 DataAxisProperties y=new DataAxisProperties();
 
 
 
 //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
 x.setNumItems(this.intervalle);
 x.setUserDefinedScale(0,24);
 x.setRoundToNearest(0);
 
 //DataAxisProperties dataAxisProperties= (DataAxisProperties)axisProperties.getYAxisProperties();
 //calcul de la meilleur echelle possible
 int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
 y.setNumItems(n+2);
 y.setUserDefinedScale( 0, 100 );
 y.setRoundToNearest( 0 );
 
 
 AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
 
 //ligne pour le cadrillage
 ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
 axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
 axisProperties.getXAxisProperties().setShowGridLines(AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
 axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
 axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
  
 //generation finale
 AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700, 500 );


>Message: 2
>Date: Sun, 5 Sep 2004 08:46:19 -0700 (PDT)
>From: "Nathaniel G. Auvil" <nat...@ya...>
>Subject: Re: [jCharts-users] RE: Scale of a Xaxis NullPointerException
>To: jch...@li...
>Reply-To: jch...@li...
>
>
>Can you attach your code with the data? 
>
>
>
>
>--- jle...@ne... wrote:
>
>> here is the stacktrace
>> 
>> 
>> java.lang.NullPointerException
>> render
>> org.jCharts.axisChart.axis.XAxis
>> -1
>> renderChart
>> org.jCharts.axisChart.AxisChart
>> -1
>> render
>> org.jCharts.Chart
>> -1
>> render
>> org.jCharts.encoders.BinaryEncoderUtil
>> -1
>> encode
>> org.jCharts.encoders.JPEGEncoder13
>> -1
>> getGraphe
>> com.GrapheScatter
>> 308
>> main
>> com.EssaiGrpahe
>> 46
>> null
>> null
>> 
>> i use this code for see them
>> 
>> System.out.println(f.getClass().getName());
>>              StackTraceElement stcak[]=f.getStackTrace();
>>              for (int t=0;t<stcak.length;t++)
>>              {
>>                   System.out.println(stcak[t].getMethodName());
>>                   System.out.println(stcak[t].getClassName());
>>                   System.out.println(stcak[t].getLineNumber());
>>              }
>>              System.out.println(f.getMessage());
>>              System.out.println(f.getLocalizedMessage());
>> 
>> >Message: 2
>> >Date: Wed, 01 Sep 2004 03:49:22 -0400
>> >From: jle...@ne...
>> >To: jch...@li...
>> >Subject: [jCharts-users] Scale of a Xaxis NullPointerException
>> >Reply-To: jch...@li...
>> >
>> >I don't know why i have a NullPointerException when i use the jpeg encoder
>> >Is there anaone could help me.....
>> >It is always the same problem with the scale of the xaxis on a point chart
>> >
>> >
>> >DataAxisProperties x=new DataAxisProperties();
>> >    DataAxisProperties y=new DataAxisProperties();
>> >    
>> >    
>> >    
>> >    //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
>> >    x.setNumItems(this.intervalle);
>> >    x.setUserDefinedScale(0,24);
>> >    x.setRoundToNearest(0);
>> >    
>> >    //DataAxisProperties dataAxisProperties= (DataAxisProperties)
>> axisProperties.getYAxisProperties();
>> >    //calcul de la meilleur echelle possible
>> >    int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
>> >    y.setNumItems(n+2);
>> >    y.setUserDefinedScale( 0, 100 );
>> >    y.setRoundToNearest( 0 );
>> > 
>> >    
>> >    AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
>> >    
>> >    //ligne pour le cadrillage
>> >    ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
>> >    axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
>> >    axisProperties.getXAxisProperties().setShowGridLines(
>> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>> >    axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
>> >    axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
>> >   
>> >    
>> >    //generation finale
>> >    AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700,
>> 500 );
>> >    
>> >   
>> >   // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
>> >    
>> >     try{
>> >          JPEGEncoder13.encode(axisChart,1.0f,new
>> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
>> >            }
>> >
>> >__________________________________________________________________
>> >Switch to Netscape Internet Service.
>> >As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
>> >
>> >Netscape. Just the Net You Need.
>> >
>> >New! Netscape Toolbar for Internet Explorer
>> >Search from anywhere on the Web and block those annoying pop-ups.
>> >Download now at http://channels.netscape.com/ns/search/install.jsp
>> >
>> >
>> >Message: 6
>> >Date: Wed, 1 Sep 2004 19:51:29 -0700 (PDT)
>> >From: "Nathaniel G. Auvil" <nat...@ya...>
>> >Subject: Re: [jCharts-users] Scale of a Xaxis NullPointerException
>> >To: jch...@li...
>> >Reply-To: jch...@li...
>> >
>> >
>> >can you attach the stacktrace?
>> >
>> >
>> >
>> >--- jle...@ne... wrote:
>> >
>> >> I don't know why i have a NullPointerException when i use the jpeg encoder
>> >> Is there anaone could help me.....
>> >> It is always the same problem with the scale of the xaxis on a point chart
>> >> 
>> >> 
>> >> DataAxisProperties x=new DataAxisProperties();
>> >>     DataAxisProperties y=new DataAxisProperties();
>> >>     
>> >>     
>> >>     
>> >>     //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
>> >>     x.setNumItems(this.intervalle);
>> >>     x.setUserDefinedScale(0,24);
>> >>     x.setRoundToNearest(0);
>> >>     
>> >>     //DataAxisProperties dataAxisProperties= (DataAxisProperties)
>> >> axisProperties.getYAxisProperties();
>> >>     //calcul de la meilleur echelle possible
>> >>     int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
>> >>     y.setNumItems(n+2);
>> >>     y.setUserDefinedScale( 0, 100 );
>> >>     y.setRoundToNearest( 0 );
>> >>  
>> >>     
>> >>     AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
>> >>     
>> >>     //ligne pour le cadrillage
>> >>     ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
>> >>     axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
>> >>     axisProperties.getXAxisProperties().setShowGridLines(
>> >> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>> >>     axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
>> >>     axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
>> >>    
>> >>     
>> >>     //generation finale
>> >>     AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null,
>> 700,
>> >> 500 );
>> >>     
>> >>    
>> >>    // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
>> >>     
>> >>      try{
>> >>           JPEGEncoder13.encode(axisChart,1.0f,new
>> >> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
>> >>             }
>> >> 
>> >> __________________________________________________________________
>> >> Switch to Netscape Internet Service.
>> >> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
>> >> 
>> >> Netscape. Just the Net You Need.
>> >> 
>> >> New! Netscape Toolbar for Internet Explorer
>> >> Search from anywhere on the Web and block those annoying pop-ups.
>> >> Download now at http://channels.netscape.com/ns/search/install.jsp
>> >> 
>> >> 
>> >> -------------------------------------------------------
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>> >> FREE Java Enterprise J2EE developer tools!
>> >> Get your free copy of BEA WebLogic Workshop 8.1 today.
>> >> http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
>> >> _______________________________________________
>> >> jCharts-users mailing list
>> >> jCh...@li...
>> >> https://lists.sourceforge.net/lists/listinfo/jcharts-users
>> >> 
>> >
>> >
>> >
>> >        
>> >__________________________________
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>> >
>> >-- __--__-- 
>> >
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>> >jCh...@li...
>> >https://lists.sourceforge.net/lists/listinfo/jcharts-users
>> >
>> >
>> >End of jCharts-users Digest
>> >
>> 
>> __________________________________________________________________
>> Switch to Netscape Internet Service.
>> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
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>> 
>> -------------------------------------------------------
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>> FREE Java Enterprise J2EE developer tools!
>> Get your free copy of BEA WebLogic Workshop 8.1 today.
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>> https://lists.sourceforge.net/lists/listinfo/jcharts-users
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>
>
>
>        
>__________________________________
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>
>--__--__--
>
>Message: 3
>Date: Mon, 06 Sep 2004 00:10:47 +0200
>From: Piet Crombach <pie...@ho...>
>To:  jch...@li...
>Subject: Re: [jCharts-users] Hi I'm new to jChart - Question: Example how
> to use data from a MDBS
>Reply-To: jch...@li...
>
>Nathaniel G. Auvil wrote:
>
>Yes I did. I found out to generate graphs in my application. And read 
>also a lot of the mailing list. So far I did not found an adequate 
>answer for the 2 quetions. I wil find out like I found a lot by trial 
>and error. But if there is somebody who wrote some code lI asked for it 
>would be a big help and a lot easier to learn.
>In the samples and documentation there are only samples for a single 
>graph on a single page. I want graphs embedded  in some other HTML 
>dynamically.
>Now I stream graphs to a temp dir and then I build the page with img 
>placeholders for the graphs. I understand there is a more elgant 
>solutiion????
>
>>Did you look at the samples and documentation?
>>
>>
>>
>>--- Piet Crombach <pie...@ho...> wrote:
>>
>>  
>>
>>>Hi,
>>>
>>>I'm trying to do usefull things with jCharts.  The best way to learn is 
>>>looking at working examples.
>>>
>>>I need 2 examples now:
>>>
>>>1.    How do I pass data from a RDBMS to a chart
>>>2.   How to pass a chart to a dynamic *.jsp page.
>>>
>>>thanks
>>>
>>>
>>>
>>>
>>>-------------------------------------------------------
>>>This SF.Net email is sponsored by BEA Weblogic Workshop
>>>FREE Java Enterprise J2EE developer tools!
>>>Get your free copy of BEA WebLogic Workshop 8.1 today.
>>>http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
>>>_______________________________________________
>>>jCharts-users mailing list
>>>jCh...@li...
>>>https://lists.sourceforge.net/lists/listinfo/jcharts-users
>>>
>>>    
>>>
>>
>>
>>__________________________________________________
>>Do You Yahoo!?
>>Tired of spam?  Yahoo! Mail has the best spam protection around 
>>http://mail.yahoo.com 
>>
>>
>>-------------------------------------------------------
>>This SF.Net email is sponsored by BEA Weblogic Workshop
>>FREE Java Enterprise J2EE developer tools!
>>Get your free copy of BEA WebLogic Workshop 8.1 today.
>>http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
>>_______________________________________________
>>jCharts-users mailing list
>>jCh...@li...
>>https://lists.sourceforge.net/lists/listinfo/jcharts-users
>>
>>  
>>
>
>
>
>
>--__--__--
>
>_______________________________________________
>jCharts-users mailing list
>jCh...@li...
>https://lists.sourceforge.net/lists/listinfo/jcharts-users
>
>
>End of jCharts-users Digest
>

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[jCharts-users] label for line chart

[Chekkilla, K. <Kir...@bc...>]

I am new to jchart. Can you guys help me how to create labels/ floating =
lables for line charts.=20



ck...@ya...



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RE: [jCharts-users] Gradient on each bar rather than across entire graph

[Chris M. <ch...@de...>]

Of course you wouldn't set the Paint again!! Better code follows...

public void preRender( AxisValueRenderEvent axisValueRenderEvent )
{
	// overwrite color if range test
	double value = axisValueRenderEvent.getiAxisChartDataSet().getValue(
	
axisValueRenderEvent.getDataSetIndex(), 
	
axisValueRenderEvent.getValueIndex()
						);
	if (value > loRange && value < hiRange) {
		axisValueRenderEvent.getGraphics2D().setPaint(
this.inRangePaint );
	}
}

RE: [jCharts-users] Gradient on each bar rather than across entire graph

[Chris M. <ch...@de...>]

You could probably do this with a custom renderer. It would be actioned on
every bar drawn though.

So for instance I changed the color of a line point if it fell within a
certain range with a PreAxisValueRenderListener.

	public void preRender( AxisValueRenderEvent axisValueRenderEvent )
	{
			//---keep the current paint around
			Paint currentPaint=
axisValueRenderEvent.getGraphics2D().getPaint();
                  axisValueRenderEvent.getGraphics2D().setPaint(
this.forecastPaint );

                  // overwrite color if range test
                  double value =
axisValueRenderEvent.getiAxisChartDataSet().getValue(
axisValueRenderEvent.getDataSetIndex(), axisValueRenderEvent.getValueIndex()
);
                  if (value > loRange && value < hiRange) {
                            axisValueRenderEvent.getGraphics2D().setPaint(
this.inRangePaint );
                  }
            
			//---reset the current Paint
			axisValueRenderEvent.getGraphics2D().setPaint(
currentPaint );
		}
	}

> -----Original Message-----
> From: jch...@li... 
> [mailto:jch...@li...] On Behalf 
> Of Travis Reeder
> Sent: Monday, 13 September 2004 1:12 p.m.
> To: jch...@li...
> Subject: [jCharts-users] Gradient on each bar rather than 
> across entire graph
> 
> Is there any way to make a GradientPaint applied separately 
> to each bar rather than across the entire graph?
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one 
> of 170 Project Admins to receive an Apple iPod Mini FREE for 
> your judgement on who ports your project to Linux PPC the 
> best. Sponsored by IBM. 
> Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php 
> _______________________________________________
> jCharts-users mailing list
> jCh...@li...
> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> 
> 

[jCharts-users] Gradient on each bar rather than across entire graph

[Travis R. <tr...@gm...>]

Is there any way to make a GradientPaint applied separately to each
bar rather than across the entire graph?

Re: [jCharts-users] radar charts and cvs

[Nathaniel G. A. <nat...@ya...>]

krysalis-jcharts is the 1.0 trunk.

RadarCharts work a little bit differently.  Take a look at:
org.krysalis.jcharts.test.RadarTestDriver for and example


--- Chris Ward <cw...@go...> wrote:

> I have been using jCharts, and it is great, thanks.
> 
> I have a need for a radar chart, that I saw on the website was in cvs. I checked out the
> jCharts/jcharts-1.0, but didn't see anything there. I then noticed krysalis-jcharts. This
> appears to have a class RadarChart, but it is not a ChartType.
> 
> Should I use the krysalis branch?/version? What is the difference between this code and the
> jcharts code. Is the radar graph in a state that it is useable?
> 
> Thanks,
> Chris
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170
> Project Admins to receive an Apple iPod Mini FREE for your judgement on
> who ports your project to Linux PPC the best. Sponsored by IBM.
> Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php
> _______________________________________________
> jCharts-users mailing list
> jCh...@li...
> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> 



		
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[jCharts-users] radar charts and cvs

[Chris W. <cw...@go...>]

I have been using jCharts, and it is great, thanks.

I have a need for a radar chart, that I saw on the website was in cvs. I =
checked out the jCharts/jcharts-1.0, but didn't see anything there. I =
then noticed krysalis-jcharts. This appears to have a class RadarChart, =
but it is not a ChartType.

Should I use the krysalis branch?/version? What is the difference =
between this code and the jcharts code. Is the radar graph in a state =
that it is useable?

Thanks,
Chris

Re: [jCharts-users] Customizing the Xaxis

[Nathaniel G. A. <nat...@ya...>]

no, this is not possible.  You would have to edit the code.


--- "Gwizdala, Steve" <Ste...@mi...> wrote:

> Hi,
> 
>  
> 
> I'm trying to create a line graph that keeps track of a years worth of
> values on the X axis, but I only want the X axis scale to show the month. I
> tried changing the number of X axis tic marks to 12 but JCharts validation
> check returned an error saying that it needed a one to one mapping between
> the X axis data series and the tic marks. Is there any way to override or
> decouple the X axis scale from the X axis data series?
> 
>  
> 
> Apologize in advance if this is a stupid question,
> 
> Steve
> 
> 



		
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[jCharts-users] Customizing the Xaxis

[Gwizdala, S. <Ste...@mi...>]

Hi,

 

I'm trying to create a line graph that keeps track of a years worth of
values on the X axis, but I only want the X axis scale to show the month. I
tried changing the number of X axis tic marks to 12 but JCharts validation
check returned an error saying that it needed a one to one mapping between
the X axis data series and the tic marks. Is there any way to override or
decouple the X axis scale from the X axis data series?

 

Apologize in advance if this is a stupid question,

Steve

Re: [jCharts-users] Hi I'm new to jChart - Question: Example how to use data from a MDBS

[Nathaniel G. A. <nat...@ya...>]

yeah, you should not write an image to disk and then stream it back.  Simply place the path to
your Servlet as the src attribute of the img tag.

There are a ton of samples in source.  Did you look under the test package?  The Swing demo?  The
Servlet Demos?




--- Piet Crombach <pie...@ho...> wrote:

> Nathaniel G. Auvil wrote:
> 
> Yes I did. I found out to generate graphs in my application. And read 
> also a lot of the mailing list. So far I did not found an adequate 
> answer for the 2 quetions. I wil find out like I found a lot by trial 
> and error. But if there is somebody who wrote some code lI asked for it 
> would be a big help and a lot easier to learn.
> In the samples and documentation there are only samples for a single 
> graph on a single page. I want graphs embedded  in some other HTML 
> dynamically.
> Now I stream graphs to a temp dir and then I build the page with img 
> placeholders for the graphs. I understand there is a more elgant 
> solutiion????
> 
> >Did you look at the samples and documentation?
> >
> >
> >
> >--- Piet Crombach <pie...@ho...> wrote:
> >
> >  
> >
> >>Hi,
> >>
> >>I'm trying to do usefull things with jCharts.  The best way to learn is 
> >>looking at working examples.
> >>
> >>I need 2 examples now:
> >>
> >>1.    How do I pass data from a RDBMS to a chart
> >>2.   How to pass a chart to a dynamic *.jsp page.
> >>
> >>thanks
> >>
> >>
> >>
> >>
> >>-------------------------------------------------------
> >>This SF.Net email is sponsored by BEA Weblogic Workshop
> >>FREE Java Enterprise J2EE developer tools!
> >>Get your free copy of BEA WebLogic Workshop 8.1 today.
> >>http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
> >>_______________________________________________
> >>jCharts-users mailing list
> >>jCh...@li...
> >>https://lists.sourceforge.net/lists/listinfo/jcharts-users
> >>
> >>    
> >>
> >
> >
> >__________________________________________________
> >Do You Yahoo!?
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> >http://mail.yahoo.com 
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> >
> >-------------------------------------------------------
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> >Get your free copy of BEA WebLogic Workshop 8.1 today.
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> >_______________________________________________
> >jCharts-users mailing list
> >jCh...@li...
> >https://lists.sourceforge.net/lists/listinfo/jcharts-users
> >
> >  
> >
> 
> 
> 
> -------------------------------------------------------
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> FREE Java Enterprise J2EE developer tools!
> Get your free copy of BEA WebLogic Workshop 8.1 today.
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> 


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Re: [jCharts-users] Hi I'm new to jChart - Question: Example how to use data from a MDBS

[Piet C. <pie...@ho...>]

Nathaniel G. Auvil wrote:

Yes I did. I found out to generate graphs in my application. And read 
also a lot of the mailing list. So far I did not found an adequate 
answer for the 2 quetions. I wil find out like I found a lot by trial 
and error. But if there is somebody who wrote some code lI asked for it 
would be a big help and a lot easier to learn.
In the samples and documentation there are only samples for a single 
graph on a single page. I want graphs embedded  in some other HTML 
dynamically.
Now I stream graphs to a temp dir and then I build the page with img 
placeholders for the graphs. I understand there is a more elgant 
solutiion????

>Did you look at the samples and documentation?
>
>
>
>--- Piet Crombach <pie...@ho...> wrote:
>
>  
>
>>Hi,
>>
>>I'm trying to do usefull things with jCharts.  The best way to learn is 
>>looking at working examples.
>>
>>I need 2 examples now:
>>
>>1.    How do I pass data from a RDBMS to a chart
>>2.   How to pass a chart to a dynamic *.jsp page.
>>
>>thanks
>>
>>
>>
>>
>>-------------------------------------------------------
>>This SF.Net email is sponsored by BEA Weblogic Workshop
>>FREE Java Enterprise J2EE developer tools!
>>Get your free copy of BEA WebLogic Workshop 8.1 today.
>>http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
>>_______________________________________________
>>jCharts-users mailing list
>>jCh...@li...
>>https://lists.sourceforge.net/lists/listinfo/jcharts-users
>>
>>    
>>
>
>
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Re: [jCharts-users] Hi I'm new to jChart - Question: Example how to use data from a MDBS

[Nathaniel G. A. <nat...@ya...>]

Did you look at the samples and documentation?



--- Piet Crombach <pie...@ho...> wrote:

> Hi,
> 
> I'm trying to do usefull things with jCharts.  The best way to learn is 
> looking at working examples.
> 
> I need 2 examples now:
> 
> 1.    How do I pass data from a RDBMS to a chart
> 2.   How to pass a chart to a dynamic *.jsp page.
> 
> thanks
> 
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by BEA Weblogic Workshop
> FREE Java Enterprise J2EE developer tools!
> Get your free copy of BEA WebLogic Workshop 8.1 today.
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Re: [jCharts-users] RE: Scale of a Xaxis NullPointerException

[Nathaniel G. A. <nat...@ya...>]

Can you attach your code with the data? 




--- jle...@ne... wrote:

> here is the stacktrace
> 
> 
> java.lang.NullPointerException
> render
> org.jCharts.axisChart.axis.XAxis
> -1
> renderChart
> org.jCharts.axisChart.AxisChart
> -1
> render
> org.jCharts.Chart
> -1
> render
> org.jCharts.encoders.BinaryEncoderUtil
> -1
> encode
> org.jCharts.encoders.JPEGEncoder13
> -1
> getGraphe
> com.GrapheScatter
> 308
> main
> com.EssaiGrpahe
> 46
> null
> null
> 
> i use this code for see them
> 
> System.out.println(f.getClass().getName());
>              StackTraceElement stcak[]=f.getStackTrace();
>              for (int t=0;t<stcak.length;t++)
>              {
>                   System.out.println(stcak[t].getMethodName());
>                   System.out.println(stcak[t].getClassName());
>                   System.out.println(stcak[t].getLineNumber());
>              }
>              System.out.println(f.getMessage());
>              System.out.println(f.getLocalizedMessage());
> 
> >Message: 2
> >Date: Wed, 01 Sep 2004 03:49:22 -0400
> >From: jle...@ne...
> >To: jch...@li...
> >Subject: [jCharts-users] Scale of a Xaxis NullPointerException
> >Reply-To: jch...@li...
> >
> >I don't know why i have a NullPointerException when i use the jpeg encoder
> >Is there anaone could help me.....
> >It is always the same problem with the scale of the xaxis on a point chart
> >
> >
> >DataAxisProperties x=new DataAxisProperties();
> >    DataAxisProperties y=new DataAxisProperties();
> >    
> >    
> >    
> >    //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
> >    x.setNumItems(this.intervalle);
> >    x.setUserDefinedScale(0,24);
> >    x.setRoundToNearest(0);
> >    
> >    //DataAxisProperties dataAxisProperties= (DataAxisProperties)
> axisProperties.getYAxisProperties();
> >    //calcul de la meilleur echelle possible
> >    int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
> >    y.setNumItems(n+2);
> >    y.setUserDefinedScale( 0, 100 );
> >    y.setRoundToNearest( 0 );
> > 
> >    
> >    AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
> >    
> >    //ligne pour le cadrillage
> >    ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
> >    axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
> >    axisProperties.getXAxisProperties().setShowGridLines(
> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
> >    axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
> >    axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
> >   
> >    
> >    //generation finale
> >    AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700,
> 500 );
> >    
> >   
> >   // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
> >    
> >     try{
> >          JPEGEncoder13.encode(axisChart,1.0f,new
> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
> >            }
> >
> >__________________________________________________________________
> >Switch to Netscape Internet Service.
> >As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
> >
> >Netscape. Just the Net You Need.
> >
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> >Search from anywhere on the Web and block those annoying pop-ups.
> >Download now at http://channels.netscape.com/ns/search/install.jsp
> >
> >
> >Message: 6
> >Date: Wed, 1 Sep 2004 19:51:29 -0700 (PDT)
> >From: "Nathaniel G. Auvil" <nat...@ya...>
> >Subject: Re: [jCharts-users] Scale of a Xaxis NullPointerException
> >To: jch...@li...
> >Reply-To: jch...@li...
> >
> >
> >can you attach the stacktrace?
> >
> >
> >
> >--- jle...@ne... wrote:
> >
> >> I don't know why i have a NullPointerException when i use the jpeg encoder
> >> Is there anaone could help me.....
> >> It is always the same problem with the scale of the xaxis on a point chart
> >> 
> >> 
> >> DataAxisProperties x=new DataAxisProperties();
> >>     DataAxisProperties y=new DataAxisProperties();
> >>     
> >>     
> >>     
> >>     //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
> >>     x.setNumItems(this.intervalle);
> >>     x.setUserDefinedScale(0,24);
> >>     x.setRoundToNearest(0);
> >>     
> >>     //DataAxisProperties dataAxisProperties= (DataAxisProperties)
> >> axisProperties.getYAxisProperties();
> >>     //calcul de la meilleur echelle possible
> >>     int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
> >>     y.setNumItems(n+2);
> >>     y.setUserDefinedScale( 0, 100 );
> >>     y.setRoundToNearest( 0 );
> >>  
> >>     
> >>     AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
> >>     
> >>     //ligne pour le cadrillage
> >>     ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
> >>     axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
> >>     axisProperties.getXAxisProperties().setShowGridLines(
> >> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
> >>     axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
> >>     axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
> >>    
> >>     
> >>     //generation finale
> >>     AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null,
> 700,
> >> 500 );
> >>     
> >>    
> >>    // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
> >>     
> >>      try{
> >>           JPEGEncoder13.encode(axisChart,1.0f,new
> >> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
> >>             }
> >> 
> >> __________________________________________________________________
> >> Switch to Netscape Internet Service.
> >> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
> >> 
> >> Netscape. Just the Net You Need.
> >> 
> >> New! Netscape Toolbar for Internet Explorer
> >> Search from anywhere on the Web and block those annoying pop-ups.
> >> Download now at http://channels.netscape.com/ns/search/install.jsp
> >> 
> >> 
> >> -------------------------------------------------------
> >> This SF.Net email is sponsored by BEA Weblogic Workshop
> >> FREE Java Enterprise J2EE developer tools!
> >> Get your free copy of BEA WebLogic Workshop 8.1 today.
> >> http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
> >> _______________________________________________
> >> jCharts-users mailing list
> >> jCh...@li...
> >> https://lists.sourceforge.net/lists/listinfo/jcharts-users
> >> 
> >
> >
> >
> >        
> >__________________________________
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> >
> >
> >End of jCharts-users Digest
> >
> 
> __________________________________________________________________
> Switch to Netscape Internet Service.
> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
> 
> Netscape. Just the Net You Need.
> 
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> 
> -------------------------------------------------------
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> 



		
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[jCharts-users] Hi I'm new to jChart - Question: Example how to use data from a MDBS

[Piet C. <pie...@ho...>]

Hi,

I'm trying to do usefull things with jCharts.  The best way to learn is 
looking at working examples.

I need 2 examples now:

1.    How do I pass data from a RDBMS to a chart
2.   How to pass a chart to a dynamic *.jsp page.

thanks

[jCharts-users] RE: Scale of a Xaxis NullPointerException

[<jle...@ne...>]

here is the stacktrace


java.lang.NullPointerException
render
org.jCharts.axisChart.axis.XAxis
-1
renderChart
org.jCharts.axisChart.AxisChart
-1
render
org.jCharts.Chart
-1
render
org.jCharts.encoders.BinaryEncoderUtil
-1
encode
org.jCharts.encoders.JPEGEncoder13
-1
getGraphe
com.GrapheScatter
308
main
com.EssaiGrpahe
46
null
null

i use this code for see them

System.out.println(f.getClass().getName());
             StackTraceElement stcak[]=f.getStackTrace();
             for (int t=0;t<stcak.length;t++)
             {
                  System.out.println(stcak[t].getMethodName());
                  System.out.println(stcak[t].getClassName());
                  System.out.println(stcak[t].getLineNumber());
             }
             System.out.println(f.getMessage());
             System.out.println(f.getLocalizedMessage());

>Message: 2
>Date: Wed, 01 Sep 2004 03:49:22 -0400
>From: jle...@ne...
>To: jch...@li...
>Subject: [jCharts-users] Scale of a Xaxis NullPointerException
>Reply-To: jch...@li...
>
>I don't know why i have a NullPointerException when i use the jpeg encoder
>Is there anaone could help me.....
>It is always the same problem with the scale of the xaxis on a point chart
>
>
>DataAxisProperties x=new DataAxisProperties();
>    DataAxisProperties y=new DataAxisProperties();
>    
>    
>    
>    //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
>    x.setNumItems(this.intervalle);
>    x.setUserDefinedScale(0,24);
>    x.setRoundToNearest(0);
>    
>    //DataAxisProperties dataAxisProperties= (DataAxisProperties) axisProperties.getYAxisProperties();
>    //calcul de la meilleur echelle possible
>    int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
>    y.setNumItems(n+2);
>    y.setUserDefinedScale( 0, 100 );
>    y.setRoundToNearest( 0 );
> 
>    
>    AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
>    
>    //ligne pour le cadrillage
>    ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
>    axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
>    axisProperties.getXAxisProperties().setShowGridLines( AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>    axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
>    axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
>   
>    
>    //generation finale
>    AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700, 500 );
>    
>   
>   // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
>    
>     try{
>          JPEGEncoder13.encode(axisChart,1.0f,new FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
>            }
>
>__________________________________________________________________
>Switch to Netscape Internet Service.
>As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
>
>Netscape. Just the Net You Need.
>
>New! Netscape Toolbar for Internet Explorer
>Search from anywhere on the Web and block those annoying pop-ups.
>Download now at http://channels.netscape.com/ns/search/install.jsp
>
>
>Message: 6
>Date: Wed, 1 Sep 2004 19:51:29 -0700 (PDT)
>From: "Nathaniel G. Auvil" <nat...@ya...>
>Subject: Re: [jCharts-users] Scale of a Xaxis NullPointerException
>To: jch...@li...
>Reply-To: jch...@li...
>
>
>can you attach the stacktrace?
>
>
>
>--- jle...@ne... wrote:
>
>> I don't know why i have a NullPointerException when i use the jpeg encoder
>> Is there anaone could help me.....
>> It is always the same problem with the scale of the xaxis on a point chart
>> 
>> 
>> DataAxisProperties x=new DataAxisProperties();
>>     DataAxisProperties y=new DataAxisProperties();
>>     
>>     
>>     
>>     //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
>>     x.setNumItems(this.intervalle);
>>     x.setUserDefinedScale(0,24);
>>     x.setRoundToNearest(0);
>>     
>>     //DataAxisProperties dataAxisProperties= (DataAxisProperties)
>> axisProperties.getYAxisProperties();
>>     //calcul de la meilleur echelle possible
>>     int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
>>     y.setNumItems(n+2);
>>     y.setUserDefinedScale( 0, 100 );
>>     y.setRoundToNearest( 0 );
>>  
>>     
>>     AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
>>     
>>     //ligne pour le cadrillage
>>     ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
>>     axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
>>     axisProperties.getXAxisProperties().setShowGridLines(
>> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>>     axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
>>     axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
>>    
>>     
>>     //generation finale
>>     AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700,
>> 500 );
>>     
>>    
>>    // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
>>     
>>      try{
>>           JPEGEncoder13.encode(axisChart,1.0f,new
>> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
>>             }
>> 
>> __________________________________________________________________
>> Switch to Netscape Internet Service.
>> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
>> 
>> Netscape. Just the Net You Need.
>> 
>> New! Netscape Toolbar for Internet Explorer
>> Search from anywhere on the Web and block those annoying pop-ups.
>> Download now at http://channels.netscape.com/ns/search/install.jsp
>> 
>> 
>> -------------------------------------------------------
>> This SF.Net email is sponsored by BEA Weblogic Workshop
>> FREE Java Enterprise J2EE developer tools!
>> Get your free copy of BEA WebLogic Workshop 8.1 today.
>> http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
>> _______________________________________________
>> jCharts-users mailing list
>> jCh...@li...
>> https://lists.sourceforge.net/lists/listinfo/jcharts-users
>> 
>
>
>
>        
>__________________________________
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Re: [jCharts-users] Scale of a Xaxis NullPointerException

[Nathaniel G. A. <nat...@ya...>]

can you attach the stacktrace?



--- jle...@ne... wrote:

> I don't know why i have a NullPointerException when i use the jpeg encoder
> Is there anaone could help me.....
> It is always the same problem with the scale of the xaxis on a point chart
> 
> 
> DataAxisProperties x=new DataAxisProperties();
>     DataAxisProperties y=new DataAxisProperties();
>     
>     
>     
>     //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
>     x.setNumItems(this.intervalle);
>     x.setUserDefinedScale(0,24);
>     x.setRoundToNearest(0);
>     
>     //DataAxisProperties dataAxisProperties= (DataAxisProperties)
> axisProperties.getYAxisProperties();
>     //calcul de la meilleur echelle possible
>     int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
>     y.setNumItems(n+2);
>     y.setUserDefinedScale( 0, 100 );
>     y.setRoundToNearest( 0 );
>  
>     
>     AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
>     
>     //ligne pour le cadrillage
>     ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
>     axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
>     axisProperties.getXAxisProperties().setShowGridLines(
> AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
>     axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
>     axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
>    
>     
>     //generation finale
>     AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700,
> 500 );
>     
>    
>    // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
>     
>      try{
>           JPEGEncoder13.encode(axisChart,1.0f,new
> FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
>             }
> 
> __________________________________________________________________
> Switch to Netscape Internet Service.
> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
> 
> Netscape. Just the Net You Need.
> 
> New! Netscape Toolbar for Internet Explorer
> Search from anywhere on the Web and block those annoying pop-ups.
> Download now at http://channels.netscape.com/ns/search/install.jsp
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by BEA Weblogic Workshop
> FREE Java Enterprise J2EE developer tools!
> Get your free copy of BEA WebLogic Workshop 8.1 today.
> http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
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> 



		
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Re: [jCharts-users] Re: JCharts - Line graph - values

[Nathaniel G. A. <nat...@ya...>]

yes. this is correct.


--- Marcin Gryszkalis <da...@to...> wrote:

>  >>I'm trying to show values on a line graph when using JCharts.
>  >>I've checked the documentation; however, I did not see a
>  >>way to add values.
> 
> > Hi May I suggest copying the code from one of the examples.
> > You'll see an array of values being passed in somewhere.
> > Just modify that list by creating the array based on your data.
> 
> I guess he ment adding value labels, it can be done using ValueLabelRenderer
> class but it works with bar and clustered-bar charts only - examples
> in guide:
> http://jcharts.sourceforge.net/userGuide/axisCharts/bar/#Bar+Labels
> 
> When I checked last time it was not possible for stacked charts and
> line charts.
> 
> regards
> marcin
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by BEA Weblogic Workshop
> FREE Java Enterprise J2EE developer tools!
> Get your free copy of BEA WebLogic Workshop 8.1 today.
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Re: [jCharts-users] Re: JCharts - Line graph - values

[Marcin G. <da...@to...>]

 >>I'm trying to show values on a line graph when using JCharts.
 >>I've checked the documentation; however, I did not see a
 >>way to add values.

> Hi May I suggest copying the code from one of the examples.
> You'll see an array of values being passed in somewhere.
> Just modify that list by creating the array based on your data.

I guess he ment adding value labels, it can be done using ValueLabelRenderer
class but it works with bar and clustered-bar charts only - examples
in guide:
http://jcharts.sourceforge.net/userGuide/axisCharts/bar/#Bar+Labels

When I checked last time it was not possible for stacked charts and
line charts.

regards
marcin

RE: [jCharts-users] Re: JCharts - Line graph - values

[Fredrik L. <fl...@tr...>]

Hi May I suggest copying the code from one of the examples.
You'll see an array of values being passed in somewhere.
Just modify that list by creating the array based on your data.

Personally I was very confused at first but after taking a second look
it's very easy to use.
You might have to follow the calls in the Api if you want to change the
look but the defaults work well.

Fredrik

-----Original Message-----
From: Nick Chalko [mailto:ni...@ch...]=20
Sent: Tuesday, August 31, 2004 9:13 PM
To: Durand; jch...@li...
Subject: [jCharts-users] Re: JCharts - Line graph - values


Great to hear you using JCharts.  Please ask your question on the list=20
(which I have CC) so that everyone can help, and benefit from the
answers.

R,
Nick
ps.  I personally have no JChart experience.

Durand wrote:

>Sir,
>
>
>
>I am using JCharts for a small scale US Army Web application
>
>proof-of-concept.
>
>
>
>I'm trying to show values on a line graph when using JCharts.
>
>I've checked the documentation; however, I did not see a
>
>way to add values.
>
>
>
>Do you know of a solution?
>
>
>
>thanks
> =20
>

[jCharts-users] Scale of a Xaxis NullPointerException

[<jle...@ne...>]

I don't know why i have a NullPointerException when i use the jpeg encoder
Is there anaone could help me.....
It is always the same problem with the scale of the xaxis on a point chart


DataAxisProperties x=new DataAxisProperties();
    DataAxisProperties y=new DataAxisProperties();
    
    
    
    //DataAxisProperties datatry = (DataAxisProperties)axisProperties.getXAxisProperties();
    x.setNumItems(this.intervalle);
    x.setUserDefinedScale(0,24);
    x.setRoundToNearest(0);
    
    //DataAxisProperties dataAxisProperties= (DataAxisProperties) axisProperties.getYAxisProperties();
    //calcul de la meilleur echelle possible
    int n=(int)Math.ceil(new Double(String.valueOf(this.valeurMax/100)).doubleValue());
    y.setNumItems(n+2);
    y.setUserDefinedScale( 0, 100 );
    y.setRoundToNearest( 0 );
 
    
    AxisProperties axisProperties= new AxisProperties((LabelAxisProperties)x,y);
    
    //ligne pour le cadrillage
    ChartStroke xAxisGridLines= new ChartStroke( new BasicStroke( 0.5f ), Color.GRAY );
    axisProperties.getXAxisProperties().setGridLineChartStroke( xAxisGridLines );
    axisProperties.getXAxisProperties().setShowGridLines( AxisTypeProperties.GRID_LINES_ONLY_WITH_LABELS);
    axisProperties.getXAxisProperties().setShowTicks( AxisTypeProperties.TICKS_NONE );
    axisProperties.getXAxisProperties().setPaddingBetweenAxisAndLabels(5.0f);
   
    
    //generation finale
    AxisChart axisChart= new AxisChart( dataSeries, chartProperties, axisProperties,null, 700, 500 );
    
   
   // axisChart.xAxis=new XAxis(axisChart,this.intervalle);
    
     try{
          JPEGEncoder13.encode(axisChart,1.0f,new FileOutputStream(prop.getProperty("GRAPHE")+chemin+".jpg"));
            }

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