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Re: [jCharts-users] Exporting chart to JPEG
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From: Bent A. M. <me...@f1...> - 2003-11-12 07:26:50
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Hi
Thankful for all the help I can receive, if not I can implement it myself.
Thanks
regards
Bent Are Melsom
---------------------------------------
Bent Are Melsom
mobile: 950 22 874
e-mail: me...@f1...
---------------------------------------
On Tue, 11 Nov 2003, Nathaniel G. Auvil wrote:
>
> Part of it. The Scale Calculators determines the value of each each segment on an axis. So yes,
> you would want to create a new implementation of one for a Logarithmic scale. But then you also
> would have to implement a new YAxis Object or enhance the existing one to plot the uneven amounts
> on the y-axis.
>
> I could help you with this part of it, if you need it; it would be a great addition to the
> library.
>
>
>
> --- me...@f1... wrote:
> > Hi
> >
> > I have looked through the JavaDocs and found the class ScaleCalculator (in the
> > org.jcharts.axischart.axis.scale package). I have not tried it yet (due to lack
> > of time), but will it be possible to implement a specialized version of this
> > class and use it to compute a logarithmic scale for me?
> >
> > Has anyone done this?
> >
> > Thanks
> >
> > regards
> > Bent Are Melsom
> >
> > Quoting "Nathaniel G. Auvil" <nat...@ya...>:
> >
> > >
> > > Logarithmic scales are not yet possible. You can set the min and increment
> > > of the scale, but this
> > > will not give you a logarithmic scale as I understand it. Take a look at the
> > > javadocs for the
> > > AxisProperties Constructor.
> > >
> > >
> > >
> > > --- Bent Are Melsom <me...@f1...> wrote:
> > > > Hi
> > > >
> > > > Thanks that worked out just fine. time for another question;)
> > > >
> > > > Have anybody used a logarithmic scale on one of the axis? I hava a need
> > > > for this. Is there some way in which I can set the values of the markings
> > > > on an axis? This way I can compute the scala and set the values to the
> > > > axis.
> > > >
> > > > regards
> > > > Bent Are Melsom
> > > >
> > > > ---------------------------------------
> > > > Bent Are Melsom
> > > > mobile: 950 22 874
> > > > e-mail: me...@f1...
> > > > ---------------------------------------
> > > >
> > > > On Mon, 10 Nov 2003, Nathaniel G. Auvil wrote:
> > > >
> > > > >
> > > > > Your chart is 1 pixel by 1 pixel, try increasing the size.
> > > > >
> > > > >
> > > > >
> > > > > --- Bent Are Melsom <me...@f1...> wrote:
> > > > > > Hi
> > > > > >
> > > > > > This is the code for my chart. I suppose that you are referring to
> > > the
> > > > > > line
> > > > > >
> > > > > > double[][] data= new double[][]{ { 250, 45, -36, 66, 145, 80, 55 }
> > > > > > };
> > > > > >
> > > > > > If not, you can see the whole code here:
> > > > > >
> > > > > > String[] xAxisLabels= { "1998", "1999", "2000", "2001", "2002",
> > > "2003",
> > > > > > "2004" };
> > > > > > String xAxisTitle= "Years";
> > > > > > String yAxisTitle= "Problems";
> > > > > > String title= "CIBER";
> > > > > > DataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle,
> > > > > > yAxisTitle, title );
> > > > > >
> > > > > > double[][] data= new double[][]{ { 250, 45, -36, 66, 145, 80, 55 }
> > > > > > };
> > > > > > String[] legendLabels= { "Bugs" };
> > > > > > Paint[] paints=TestDataGenerator.getRandomPaints( 1 );
> > > > > >
> > > > > > Stroke[] strokes= { LineChartProperties.DEFAULT_LINE_STROKE };
> > > > > > Shape[] shapes= { PointChartProperties.SHAPE_CIRCLE };
> > > > > > LineChartProperties lineChartProperties= new LineChartProperties(
> > > > > > strokes, shapes );
> > > > > > AxisChartDataSet axisChartDataSet= new AxisChartDataSet( data,
> > > > > > legendLabels, paints, ChartType.LINE, lineChartProperties );
> > > > > > dataSeries.addIAxisPlotDataSet( axisChartDataSet );
> > > > > >
> > > > > > ChartProperties chartProperties= new ChartProperties();
> > > > > > AxisProperties axisProperties= new AxisProperties();
> > > > > > LegendProperties legendProperties= new LegendProperties();
> > > > > >
> > > > > > AxisChart axisChart= new AxisChart( dataSeries, chartProperties,
> > > > > > axisProperties, legendProperties, 1,1 );
> > > > > >
> > > > > > Thanks!
> > > > > >
> > > > > > regards
> > > > > > Bent Are Melsom
> > > > > >
> > > > > > ---------------------------------------
> > > > > > Bent Are Melsom
> > > > > > mobile: 950 22 874
> > > > > > e-mail: me...@f1...
> > > > > > ---------------------------------------
> > > > > >
> > > > > > On Mon, 10 Nov 2003, Nathaniel G. Auvil wrote:
> > > > > >
> > > > > > >
> > > > > > > what are you sending as your data?
> > > > > > >
> > > > > > >
> > > > > > > --- Bent Are Melsom <me...@f1...> wrote:
> > > > > > > > Hi
> > > > > > > >
> > > > > > > > I am trying to export a chart to a JPEG image using the
> > > JPEGEncoder13
> > > > > > > > class. This does not work, all I get is an
> > > IndexOutOfBoundsException. The
> > > > > > > > code is
> > > > > > > >
> > > > > > > > File file = new File("c:\\file.jpg");
> > > > > > > > OutputStream out = new FileOutputStream(file);
> > > > > > > > JPEGEncoder13.encode(axisChart,0.5f,out);
> > > > > > > >
> > > > > > > > The exception is:
> > > > > > > >
> > > > > > > > java.lang.ArrayIndexOutOfBoundsException: -1
> > > > > > > > int java.awt.font.LineBreakMeasurer.nextOffset(float, int,
> > > > > > > > boolean)
> > > > > > > > LineBreakMeasurer.java:334
> > > > > > > > java.awt.font.TextLayout
> > > > > > > > java.awt.font.LineBreakMeasurer.nextLayout(float, int, boolean)
> > > > > > > > LineBreakMeasurer.java:408
> > > > > > > > java.awt.font.TextLayout
> > > > > > > > java.awt.font.LineBreakMeasurer.nextLayout(float)
> > > > > > > > LineBreakMeasurer.java:382
> > > > > > > > float org.jCharts.Chart.renderChartTitle(java.lang.String,
> > > > > > > > java.awt.font.FontRenderContext)
> > > > > > > > void org.jCharts.axisChart.AxisChart.renderChart()
> > > > > > > > void org.jCharts.Chart.render()
> > > > > > > > java.awt.image.BufferedImage
> > > > > > > > org.jCharts.encoders.BinaryEncoderUtil.render(org.jCharts.Chart)
> > > > > > > > void
> > > org.jCharts.encoders.JPEGEncoder13.encode(org.jCharts.Chart,
> > > > > > > > float, java.io.OutputStream)
> > > > > > > > void mypackage2.TestClass.generateLineChart()
> > > > > > > > TestClass.java:49
> > > > > > > > void mypackage2.TestClass.main(java.lang.String[])
> > > > > > > > TestClass.java:62
> > > > > > > >
> > > > > > > > The chart is the coded using the example from the user
> > > documentation
> > > > > > > > of linechart from User's Guide 0.3.0 of jCharts 0.7.
> > > > > > > >
> > > > > > > > Does anybody have a hint?
> > > > > > > >
> > > > > > > > regards
> > > > > > > > Bent Are Melsom
> > > > > > > > ---------------------------------------
> > > > > > > > Bent Are Melsom
> > > > > > > > mobile: 950 22 874
> > > > > > > > e-mail: me...@f1...
> > > > > > > > ---------------------------------------
> > > > > > > >
> > > > > > > >
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