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

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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"));
>> >>             }
>> >> 
>> >> __________________________________________________________________
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>> >
>> >
>> >
>> >        
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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.
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>>>_______________________________________________
>>>jCharts-users mailing list
>>>jCh...@li...
>>>https://lists.sourceforge.net/lists/listinfo/jcharts-users
>>>
>>>    
>>>
>>
>>
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>>  
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