The answer accepted here (JFreechart(Java) - How to draw lines that is partially dashed lines and partially solid lines?) helped me start down the path of changing my seriesstroke lines on my chart. After stepping through my code and watching the changes, I see that my seriesstroke does in fact change to "dashedStroke" when it is supposed to (after a certain date "dashedAfter"), but when the chart is rendered the entire series line is dashed. How can I get a series line to be drawn solid at first and dashed after a set date?
/* series line modifications */
final Number dashedAfter = timeNowDate.getTime();
XYLineAndShapeRenderer render = new XYLineAndShapeRenderer() {
Stroke regularStroke = new BasicStroke();
Stroke dashedStroke = new BasicStroke(
1.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
1.0f, new float[] {10.0f, 6.0f}, 0.0f );
@Override
public Stroke getItemStroke(int row, int column) {
Number xVal = cd.getXValue(row, column);
if (xVal.doubleValue() > dashedAfter.doubleValue()) {
return dashedStroke;
} else {
return regularStroke;
}
}
};
render.setBaseShapesVisible(false);
render.setBaseShapesFilled(true);
render.setDrawSeriesLineAsPath(true);
plot.setRenderer(render);
Have you tried implementing AbstractRenderer#getItemStroke
?
In this example I'm using a dashed line for x > 4 for series 2:
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(){
Stroke soild = new BasicStroke(2.0f);
Stroke dashed = new BasicStroke(1.0f,BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, new float[] {10.0f}, 0.0f);
@Override
public Stroke getItemStroke(int row, int column) {
if (row == 2){
double x = dataset.getXValue(row, column);
if ( x > 4){
return dashed;
} else {
return soild;
}
} else
return super.getItemStroke(row, column);
}
};
renderer.setBaseShapesVisible(true);
renderer.setBaseShapesFilled(true);
renderer.setBaseStroke(new BasicStroke(3));
plot.setRenderer(renderer);
Although this example is using and XYSeries
and not dates you shold be able to modify it for you needs.
Here is the full example
import java.awt.BasicStroke;
import java.awt.Stroke;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class LineChartDemo2 extends ApplicationFrame {
public LineChartDemo2(String title) {
super(title);
JPanel chartPanel = createDemoPanel();
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}
private static JFreeChart createChart(final XYDataset dataset) {
JFreeChart chart = ChartFactory.createXYLineChart(
"Line Chart Demo: XYLineAndShapeRenderer",
"X",
"Y",
dataset,
PlotOrientation.VERTICAL,
false,
false,
false
);
XYPlot plot = (XYPlot) chart.getPlot();
plot.setDomainPannable(true);
plot.setRangePannable(true);
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(){
Stroke soild = new BasicStroke(2.0f);
Stroke dashed = new BasicStroke(1.0f,BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, new float[] {10.0f}, 0.0f);
@Override
public Stroke getItemStroke(int row, int column) {
if (row == 2){
double x = dataset.getXValue(row, column);
if ( x > 4){
return dashed;
} else {
return soild;
}
} else
return super.getItemStroke(row, column);
}
};
renderer.setBaseShapesVisible(true);
renderer.setBaseShapesFilled(true);
renderer.setBaseStroke(new BasicStroke(3));
plot.setRenderer(renderer);
return chart;
}
public static JPanel createDemoPanel() {
JFreeChart chart = createChart(createDataset());
ChartPanel panel = new ChartPanel(chart);
panel.setMouseWheelEnabled(true);
return panel;
}
public static void main(String[] args) {
LineChartDemo2 demo = new LineChartDemo2(
"JFreeChart");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
private static XYDataset createDataset() {
XYSeries series1 = new XYSeries("First");
series1.add(1.0, 1.0);
series1.add(2.0, 4.0);
series1.add(3.0, 3.0);
series1.add(4.0, 5.0);
series1.add(5.0, 5.0);
series1.add(6.0, 7.0);
series1.add(7.0, 7.0);
series1.add(8.0, 8.0);
XYSeries series2 = new XYSeries("Second");
series2.add(1.0, 5.0);
series2.add(2.0, 7.0);
series2.add(3.0, 6.0);
series2.add(4.0, 8.0);
series2.add(5.0, 4.0);
series2.add(6.0, 4.0);
series2.add(7.0, 2.0);
series2.add(8.0, 1.0);
XYSeries series3 = new XYSeries("Third");
series3.add(3.0, 4.0);
series3.add(4.0, 3.0);
series3.add(5.0, 2.0);
series3.add(6.0, 3.0);
series3.add(7.0, 6.0);
series3.add(8.0, 3.0);
series3.add(9.0, 4.0);
series3.add(10.0, 3.0);
XYSeriesCollection dataset = new XYSeriesCollection();
dataset.addSeries(series1);
dataset.addSeries(series2);
dataset.addSeries(series3);
return dataset;
}
}