No lines using XYSplineRenderer?

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No lines using XYSplineRenderer?

Postby Phina Le » Thu Oct 05, 2017 4:41 am

Hello, I am using JFreeChart V1.0.19, and have tried to use the XYSplineRenderer to render smooth curved lines for multiple series in my line chart.

However the issue is that no lines show up, only shapes at the coordinates that my program inputs. I thought it was an issue with my code or that I was missing some kind of DrawLine method, however, this issue seemed to happen with another user on this forum as a result of the update to 1.0.19.
Post located here:

Here is an image of how the lines look like when I use XYSplineRenderer.

Here is the part of the code where I switch to XYSplineRenderer:

Code: Select all
ArrayList<XYValues> values = Parser.parse(files);
      theDataset= JFreeChartLineChartExample.createDataset(values);

        JFreeChart lineChart = ChartFactory.createXYLineChart(  "E-Field VH",               //Title of chart
                                                  "Electric Field  (v/m)",      //X-Axis Label
                                                  "Normalized Volume (Decimal)",    //Y-Axis Label
                                                  theDataset,                //(X, Y) Coordinates
                                                  PlotOrientation.VERTICAL,       //Plot Orientation
                                                  true,                      //Toggle Legend
                                                  true,                      //Toggle ToolTips
                                                  false);                     //Toggle Boolean Urls
        // CHARTPANEL
        ChartPanel chartPanel = new ChartPanel(lineChart);
        xyplot = lineChart.getXYPlot();
        xyplot.setDomainGridlineStroke(new BasicStroke(0.1f));
      xyplot.setRangeGridlineStroke(new BasicStroke(0.1f));

      xyplot.setRenderer(new XYSplineRenderer(2));

If there is some kind of method to fix the error, please let me know. Looking at other usages of XYSplineRenderer however, they simply seemed to just switch the renderer and set the precision like I did.
Phina Le
Posts: 1
Joined: Thu Oct 05, 2017 3:55 am

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