RE: [jCharts-users] LineCharts Question multiple data series...

[Daniel H. <Dan...@di...>]

thank you for the quick response :)

I have made the change and now I am getting this error..

org.jCharts.properties.PropertyException: You must define a Stroke =
Object for each Line in the LineChart.
	at org.jCharts.properties.LineChartProperties.validate(Unknown Source)
	at org.jCharts.chartData.AxisChartDataSet.validate(Unknown Source)
	at org.jCharts.chartData.AxisDataSeries.validate(Unknown Source)

The changes I made are:

// Define both line data points
double[][] data =3D new double[][]{{1500, 6880, 4510, 2600, 1200, 1580, =
8000, 4555, 4000, 6120},{2500, 7880, 5510, 8600, 2200, 2580, 9000, 5555, =
3000, 1120}};

// Define the Labels for both lines
String[] legendLabels =3D {"Bugs","tests"};

// Define both line colors
Paint[] linePaints =3D new Paint[]{Color.green,Color.blue};

// Define strokes/shapes for both lines
Stroke[] strokes =3D {LineChartProperties.DEFAULT_LINE_STROKE, =
LineChartProperties.DEFAULT_LINE_STROKE};
Shape[] shapes =3D {PointChartProperties.SHAPE_DIAMOND, =
PointChartProperties.SHAPE_CIRCLE};

this.lineChartProperties =3D new LineChartProperties( strokes, shapes );

dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data, =
legendLabels, linePaints, ChartType.LINE, this.lineChartProperties ));

AxisChart axisChart =3D new AxisChart( dataSeries, this.chartProperties, =
this.axisProperties, this.legendProperties, this.width, this.height );
		=09
ServletEncoderHelper.encodeJPEG13( axisChart, 1.0f, httpServletResponse =
); <--- GENERATES THE ERROR MESSAGE indicating the stroke is not defined =
for both lines?

many thanx again for any suggestions..


-----Original Message-----
From: Nathaniel G. Auvil [mailto:nat...@ya...]
Sent: Thursday, July 31, 2003 11:53 AM
To: jch...@li...
Subject: Re: [jCharts-users] LineCharts Question multiple data series...



--- Daniel Hopkins <Dan...@di...> wrote:
> Being a newbie to the JCharts, I am having difficulty getting a graph =
to correctly display
> multiple lines of data, and have not been able to find an example that =
does this.
>=20
> I see http://jcharts.sourceforge.net/samples/line.html shows a sample, =
but no code is provided.
>=20
> I have played/modifed the code from ComboChartServlet example, where I =
simplied added another
> data series, but this too fail, unless the second data series is =
configured to render using
> ChartType.BAR
>=20
> The modified service method is shown below...
>=20
> If I modify the one of the lines:
>=20
> dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data, =
legendLabels, paints,
> ChartType.LINE, this.lineChartProperties ) );
>=20
> to
>=20
> dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data, =
legendLabels, paints, ChartType.BAR,
> this.barChartProperties ) );
>=20
> it will render this series correctly as a bar chart, and the other as =
a line chart.  But I
> cannot get them both to render as lines..what gives?
>=20
> I must be missing something....any suggestions would be greatly =
appreciated


All your line data should be in the same IAxisChartDataSet; it takes a =
double[][] for the data
values.

Each IAxisPlotDataSet in the DataSeries Object represents a specific =
kind of chart.







=3D=3D=3D=3D=3D
http://nathaniel-auvil.blog-city.com/

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