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[jCharts-users] RE: Scale of a Xaxis NullPointerException
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From: <jle...@ne...> - 2004-09-03 12:06:53
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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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