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Re: [jCharts-users] RE: Re: RE: Scale of a Xaxis NullPointerException (Nathaniel G. Auvil)
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From: Nathaniel G. A. <nat...@ya...> - 2004-09-14 00:44:13
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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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> >> >
> >> >_______________________________________________
> >> >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 mailing list
> >> jCh...@li...
> >> 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
> >>>
> >>>
> >>>
> >>>
> >>>-------------------------------------------------------
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> >>>FREE Java Enterprise J2EE developer tools!
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> >>>_______________________________________________
> >>>jCharts-users mailing list
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> >>>https://lists.sourceforge.net/lists/listinfo/jcharts-users
> >>>
> >>>
> >>>
> >>
> >>
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> >>
> >>
> >
> >
> >
> >
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> >
>
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