Re: [jCharts-users] creating a graph w/ multiple data sets

[Nathaniel G. A. <nat...@ya...>]

hi Carlos.

You should just use one AxisChartDataSet with a multi-dimensional array holding all the data for
each line.



--- Carlos D Bermudez <cdb...@us...> wrote:
> I have various data sets that use the same scale so i would like to create 
> one graph that has mulitple lines (each line representing system usage as 
> a function of time).  The closest example I have seen is the 
> ComboChartServlet, except that I would like to have multiple line graphs 
> rather than a line and bar graph.  Perhaps there is another graph type 
> that better suits my needs?  I also have a working servlet modeled after 
> the ScatterPlotServlet example but I likewise can't find a way to get it 
> to display multiple lines. 
> 
> 
> i think the relevant code is the following few lines where I create the 
> dataSeries, add the two datasets to it and create the chart.  Perhaps 
> noteworthy is that all the parameters i'm using for the 
> addIAxisPlotDataSet method are the same except for the data portion, as I 
> will work on creating appropriate legends and colors later.
> 
> IAxisDataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle, yAxisTitle, title );
> 
> dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data, legendLabels, linePaints,
> ChartType.LINE, this.lineChartProperties ) );
> 
> dataSeries.addIAxisPlotDataSet( new AxisChartDataSet( data2, legendLabels, linePaints,
> ChartType.LINE, this.lineChartProperties ) );
> 
> AxisChart axisChart = new AxisChart( dataSeries, this.chartProperties, this.axisProperties,
> this.legendProperties, this.width, this.height );
> 
> ServletEncoderHelper.encodeJPEG13( axisChart, 1.0f, resp );
> 
> This results in just displaying the results for the last data set.
> 
> Any help would be greatly appreciated.
> 
> thanks,
> 
> Carlos Bermudez
> Rochester, Minnesota
> email: cdb...@us...
> 
> 
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