Develop Reference

Issues creating a jfreechart score bar/chart

I am trying to create a score/percent/status bar using jfreechart.
The image show what it's suppose to look like.Good ScoreChart
It looks like one bar from a stack chart, so I try to adjust from there. (Do let me know if there is a better way to do this other than the stack chart)
I am seeing multiple issues doing the bar this way. I can't make the start line and end line longer. I can't put text on top of both start/end line.(I think they get chopped off) I cannot put center text in the middle of the bar either...
Here is what I got now. Bad ScoreChart
Here is the code for the bad Chart.
public JFreeChart createChart(final CategoryDataset dataset) {
final JFreeChart chart = ChartFactory.createStackedBarChart(null, null, null, dataset,
PlotOrientation.HORIZONTAL, false, false, false);
chart.setBackgroundPaint(Color.WHITE);
CategoryPlot plot = chart.getCategoryPlot();
((BarRenderer) plot.getRenderer()).setBarPainter(new StandardBarPainter());
plot.getRenderer().setSeriesPaint(0, DONUT_CHART_ORANGE);
plot.getRenderer().setSeriesPaint(1, DONUT_CHART_BLUE);
ValueAxis rangeAxis = plot.getRangeAxis();
rangeAxis.setVisible(false);
CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setVisible(false);
plot.setRangeGridlinesVisible(false);
plot.setBackgroundPaint(Color.WHITE);
plot.setOutlineVisible(false);
CategoryItemRenderer renderer = ((CategoryPlot) chart.getPlot()).getRenderer();
//renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
renderer.setBaseItemLabelGenerator(new CustomItemLabelGenerator());
renderer.setBaseItemLabelsVisible(true);
ItemLabelPosition position = new ItemLabelPosition(ItemLabelAnchor.CENTER, TextAnchor.CENTER);
renderer.setBasePositiveItemLabelPosition(position);
Marker startMarker = new ValueMarker(0);
startMarker.setPaint(Color.black);
startMarker.setLabel("000000000");
startMarker.setStroke(new BasicStroke(1.0f));
startMarker.setLabelOffset( new RectangleInsets(UnitType.ABSOLUTE, 10,0,0,0));
startMarker.setLabelAnchor(RectangleAnchor.TOP_RIGHT) ;
startMarker.setLabelTextAnchor(TextAnchor.BASELINE_CENTER);
plot.addRangeMarker(startMarker);
Marker endMarker = new ValueMarker(1000);
endMarker.setPaint(Color.black);
endMarker.setLabel("1000");
endMarker.setStroke(new BasicStroke(1.0f));
endMarker.setLabelAnchor(RectangleAnchor.TOP);
endMarker.setLabelTextAnchor(TextAnchor.TOP_RIGHT);
plot.addRangeMarker(endMarker);
RectangleInsets chartRectangle = new RectangleInsets(35, 0, 35, 0);
chart.setPadding(chartRectangle);
return chart;
}
public CategoryDataset createDataset() {
double inValue = 775;
double[][] data = new double[][] {
{ inValue },
{ 1000- inValue },
};
return DatasetUtilities.createCategoryDataset("A", "B", data);
}
Any Idea how to move the text so they show up on top of the lines and at the center of the bar?
Can we adjust the line width at the beginning and the end?
Thanks for any idea/info.

How to customize legend of a BoxAndWhisker plot

I've created a BoxAndWhiskerRenderer plot using JFreeChart and it seems that it is automatically creating a sort of legend (see attached picutre).
Is there a way to remove the outside border of this legend and customize the font of the labels in the legend items?
Here is an example of my code:
//Get the desired BoxAndWhiskerCategoryDataset from a LinkedHashMap
BoxAndWhiskerCategoryDataset dataset = values.get(b);
//Create X axis
CategoryAxis xAxis = new CategoryAxis();
xAxis.setAxisLineVisible(false);
//Create Y axis
NumberAxis yAxis = new NumberAxis(b.getLabel());
yAxis.setAxisLineVisible(false);
yAxis.setTickLabelFont(FDFont.getFont(12f));
yAxis.setLabelFont(FDFont.getFont());
yAxis.setLabelPaint(FDPalette.secondaryText);
yAxis.setTickLabelPaint(FDPalette.secondaryText);
yAxis.setAutoRangeIncludesZero(false);
//Create renderer
BoxAndWhiskerRenderer renderer = new BoxAndWhiskerRenderer();
int count = 0;
for(Map.Entry<Integer,Color> map : clusterColor.entrySet()){
//Set color for the series (I have a previously created map which links colors and series)
renderer.setSeriesPaint(count,map.getValue());
count++;
}
renderer.setFillBox(true);
renderer.setToolTipGenerator(new BoxAndWhiskerToolTipGenerator());
CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
JFreeChart chart = new JFreeChart(plot);
chart.setBackgroundPaint(white);
chart.setBorderVisible(false);
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(300, 270));

As shown here, the simplest JFreeChart constructor adds a legend by default. The code for doing so is seen here; simply substitute your desired frame, color and position.
Starting from this example, the following changes produce the chart shown below:
private void createChartPanel() {
…
JFreeChart chart = new JFreeChart("BoxAndWhiskerDemo", plot);
LegendTitle legend = chart.getLegend();
legend.setFrame(new LineBorder(Color.white, new BasicStroke(1.0f),
new RectangleInsets(1.0, 1.0, 1.0, 1.0)));
legend.setItemFont(legend.getItemFont().deriveFont(16f));
chartPanel = new ChartPanel(chart);
}
Compare to this default legend:

JFreeChart border line for areas?

I have a dynamic XYAreaChart and I want line borders to be clear because the area is all filled with a gradient color but I want the line borders to be in different color, for example my area is filled with gradient green and red color and I want the line borders to be in black color. How to do this?
Here's my code:
final XYSeries series = new XYSeries("Data");
XYSeriesCollection dataset = new XYSeriesCollection(series);
// Creation du area chart
JFreeChart chart = ChartFactory.createXYAreaChart("Fun Meter", "", "",
dataset, PlotOrientation.VERTICAL, false, false, false);
// jframe=new ChartFrame("Fun Meter", chart);
ChartPanel CP = new ChartPanel(chart);
XYPlot xyPlot = (XYPlot) chart.getPlot();
GradientPaint gp0 = new GradientPaint(0.0f, 100.0f, new Color(50, 205,
50), 0.0f, 100.0f, Color.red);
xyPlot.getRenderer().setSeriesPaint(0, gp0);
xyPlot.setForegroundAlpha(0.75f);

You should use the setSeriesOutlinePaint(int, Paint) method on the renderer.
Assuming you use a XYAreaRenderer
So something like:
XYAreaRenderer renderer = (XYAreaRenderer) xyPlot.getRenderer();
renderer.setSeriesOutlinePaint(0, Color.black);
renderer.setSeriesOutlineStroke(0, new BasicStroke(0.5f));
renderer.setOutline(true);

JFreeChart Large Data Can't Read Axis

I am using JFreeChart to plot a line graph. The app reads in sensory data every 100 milliseconds so for a few minutes of capture it's a a lot of data. I don't plot the graph dynamically, it is static. I am using a Category plot since the axis can sometimes be decimal values, other times it can be strings, other times it can be boolean. My issue is the X axis (time) has so much data I can't make out the text:
Anyone know what I can do here to? Any tips or tricks to deal with this will be great!
private CategoryDataset createDataset() {
String series1 = "First";
String series2 = "Second";
String category1 = "Category 1";
String category2 = "Category 2";
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
for (int i = 0; i < time.size(); i++) {
dataset.addValue(Math.random(), series1, time.get(i));
}
return dataset;
}
private JFreeChart createChart(final CategoryDataset dataset) {
// create the chart...
final JFreeChart chart = ChartFactory.createLineChart(
"Line Chart Demo 6", // chart title
"Time", // x axis label
"RPM", // y axis label
dataset, // data
PlotOrientation.VERTICAL,
true, // include legend
true, // tooltips
false // urls
);
chart.setBackgroundPaint(Color.white);
final CategoryPlot plot = chart.getCategoryPlot();
plot.setBackgroundPaint(Color.white);
plot.setDomainGridlinePaint(Color.white);
plot.setRangeGridlinePaint(Color.white);
final CategoryItemRenderer renderer = (CategoryItemRenderer) plot.getRenderer();
plot.setRenderer(renderer);
return chart;
}
public void setLists(ArrayList<String> time) {
this.time = time;
final CategoryDataset dataset = createDataset();
final JFreeChart chart = createChart(dataset);
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}

You can turn off the Lables and TickMarks by adding:
CategoryPlot plot = (CategoryPlot) chart.getPlot();
CategoryAxis cx = new CategoryAxis();
cx.setTickLabelsVisible(false);
cx.setTickMarksVisible(false);
plot.setDomainAxis(cx);
If you wantto display a subset of the labels (every nth value) then you will need to subclass CategoryAxis so you can overide CategoryAxis#drawCategoryLabels() andCategoryAxis#drawTickMarks()

Jfree chart xy line implementation

I want to plot 4 lines in one dataset but I cannot. Could any1 tell me what libs in need in jfree and how I can implement them in 1 chart
public void visualise(){
//visualise data
XYSeries series = new XYSeries("Membrane mVolt");
XYSeries series2 = new XYSeries("potassium_channel_n_gate_n");
XYSeries series3 = new XYSeries("sodium_channel_h_gate_h");
XYSeries series4 = new XYSeries("sodium_channel_m_gate_m");
//add data to charts
for(int l=0;l<301;l++){
series.add(tData[l], YData[0][l]);
series2.add(tData[l], YData[1][l]);
series3.add(tData[l], YData[2][l]);
series4.add(tData[l], YData[3][l]);
}
//create lines
XYDataset xyDataset = new XYSeriesCollection(series);
XYDataset xyDataset2 = new XYSeriesCollection(series2);
XYDataset xyDataset3 = new XYSeriesCollection(series3);
XYDataset xyDataset4 = new XYSeriesCollection(series4);
//visualize
JFreeChart chart = ChartFactory.createXYLineChart("Membrane", "time","data",xyDataset, PlotOrientation.VERTICAL, true, true, false);
JFreeChart chart2 = ChartFactory.createXYLineChart("Potassium Channel n", "time""data",xyDataset2,PlotOrientation.VERTICAL, true, true, false);
JFreeChart chart3 = ChartFactory.createXYLineChart("Sodium Channel h", "time","data",xyDataset3, PlotOrientation.VERTICAL, true, true, false);
JFreeChart chart4 = ChartFactory.createXYLineChart("Sodium Channel m", "time", "data",xyDataset4,
PlotOrientation.VERTICAL, true, true, false);
//open window
ChartFrame frame1=new ChartFrame(" ",chart);
ChartFrame frame2=new ChartFrame(" ",chart2);
ChartFrame frame3=new ChartFrame(" ",chart3);
ChartFrame frame4=new ChartFrame(" ",chart4);
//make window
frame1.setVisible(true);
frame1.setSize(900,900);
frame2.setVisible(true);
frame2.setSize(900,900);
frame3.setVisible(true);
frame3.setSize(900,900);
frame4.setVisible(true);
frame4.setSize(900,900);
}

This example shows how to add multiple series to a DefaultXYDataset.