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Re: [jCharts-users] RE: Scale of a Xaxis NullPointerException
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From: Nathaniel G. A. <nat...@ya...> - 2004-09-05 15:46:28
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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.
> >> As low as $9.95 a month -- Sign up today at http://isp.netscape.com/register
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> >>
> >>
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> >> _______________________________________________
> >> jCharts-users mailing list
> >> jCh...@li...
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> >>
> >
> >
> >
> >
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>
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