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PODisplaying huge dataset in JFreeChart
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  1. PODisplaying huge dataset in JFreeChart
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    copied!<p>I have an two-dimension array with the over of 100k records. When I'm trying to chart it - CPU is hard loading, and nothing else is going on. I've checked all the possible ways, including anti-alias, disabling event listeners etc. Nothing is working. And I assume a performance near 3-5 minutes (ok, that's relative thing, but I'd like to know how to reach it).</p> <p>Therefore, I'm asking if there is a way to display the data correctly? I'm having two functions, one for specifying the chart, and another for it's plotting:</p> <pre><code> public void plotXYChart(double dArray[][], String sPlotName, String sSeriesName, String sRangeName){ XYSeries series1 = new XYSeries(sSeriesName); series1.clear(); for (int i=0; i&lt; dArray.length; i++){ series1.add(dArray[i][0], dArray[i][1], false); } XYSeriesCollection dataset = new XYSeriesCollection(); dataset.removeAllSeries(); dataset.addSeries(series1); dataset.setAutoWidth(false); dataset.setIntervalWidth(2000); chart = ChartFactory.createXYLineChart(sPlotName, sSeriesName, sRangeName, dataset, PlotOrientation.VERTICAL, false, true, false); chart.setAntiAlias(false); XYPlot plot = (XYPlot) chart.getPlot(); plot.getDomainAxis().setStandardTickUnits(new StandardTickUnitSource()); plot.getRangeAxis().setStandardTickUnits(new StandardTickUnitSource()); SamplingXYLineRenderer renderer = new SamplingXYLineRenderer(); plot.setRenderer(renderer); plotChart(sPlotName, chart); } private void plotChart(String sPlotName, JFreeChart chart){ if (this.cPanel!=null) cPanel.setChart(chart); else cPanel = new ChartPanel(chart); cPanel.setAutoscrolls(false); cPanel.setDomainZoomable(false); cPanel.setRangeZoomable(false); cPanel.setRefreshBuffer(false); cPanel.setDoubleBuffered(rootPaneCheckingEnabled); this.chartFrame.add(cPanel); this.chartFrame.pack(); if (this.chartFrame.isVisible() == false) RefineryUtilities.centerFrameOnScreen(this.chartFrame); this.chartFrame.setVisible(true); } </code></pre>
 

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