I'm making an application in Java using JFreeChart which shows an XY line chart. The problem is that it shows every point of the dataset on the lines, and I don't want to display these points. Any idea on how to remove the points or make them not visible?
This is a sample screenshot:
Here is the code:
JFrame frame = new JFrame();
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
renderer.setSeriesPaint(0, Color.RED);
renderer.setSeriesStroke(0, new BasicStroke(2.0f,
BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f,
new float[] { 2.0f, 4.0f }, 0.0f));
XYDataset ds = createDataset(i, p, capacity);
JFreeChart xylineChart = ChartFactory.createXYLineChart("", "",
"", ds, PlotOrientation.VERTICAL, true, true, false);
XYPlot plot = xylineChart.getXYPlot();
plot.setDomainGridlinePaint(Color.BLACK);
plot.setRangeGridlinePaint(Color.BLACK);
plot.setBackgroundPaint(Color.WHITE);
plot.setRenderer(renderer);
ChartPanel cp = new ChartPanel(xylineChart);
frame.getContentPane().add(cp);
By default, the no-argument constructor of XYLineAndShapeRenderer "Creates a new renderer with both lines and shapes visible." To remove the points, you can
Use the alternative constructor to specify the desired combination—lines without shapes, as shown here and in ChartFactory.createXYLineChart:
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(true, false);
Invoke setSeriesShapesVisible(), as #abhinavxeon suggests here and the author suggests here:
renderer.setSeriesShapesVisible(0, false)
Related
I'm using JFreeChart v1.0.19 to create the following time series chart:
...using the following code:
final String chartTitle = "";
final XYDataset dataset = createDataset1();
final JFreeChart chart = ChartFactory.createTimeSeriesChart(
chartTitle, "Year End", "Turnover", dataset, true, false, false);
final XYPlot plot = chart.getXYPlot();
final NumberAxis axis2 = new NumberAxis("Cash");
axis2.setAutoRangeIncludesZero(false);
plot.setRangeAxis(1, axis2);
plot.setDataset(1, createDataset2());
plot.mapDatasetToRangeAxis(1, 1);
final StandardXYItemRenderer renderer1 = new StandardXYItemRenderer();
renderer1.setSeriesPaint(0, Color.blue);
renderer1.setSeriesShape(0, ShapeUtilities.createDiamond(5));
renderer1.setSeriesShapesFilled(0, true);
plot.setRenderer(0, renderer1);
final StandardXYItemRenderer renderer2 = new StandardXYItemRenderer();
renderer2.setSeriesPaint(0, Color.black);
renderer2.setSeriesShape(0, ShapeUtilities.createDiamond(5));
renderer2.setSeriesShapesFilled(0, true);
plot.setRenderer(1, renderer2);
chart.getPlot().setBackgroundPaint(Color.WHITE);
chart.getXYPlot().setDomainGridlinePaint(Color.LIGHT_GRAY);
chart.getXYPlot().setRangeGridlinePaint(Color.LIGHT_GRAY);
...but I can't get the data points to show shapes. Is this possible?
It was my renderer that was the problem. Changing from StandardXYItemRenderer to XYLineAndShapeRenderer e.g.
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(true,true);
...did the trick. The two boolean args in the constructor are for switching on/off lines and shapes, respectively.
I need to implement a new "graphic generator". To ilustrate this requirement, I'll show an example of output using the old generator and the output of the one I'm trying to develop (or where I got so far).
My main issue right now is the space between the lines on the tick labels. The image must be 600x150, so I need to compress the text part of the graphic as much as I can (It doesn't need to be visually beautiful), but I could not find any suitable code so far.
Actually I need to eliminate as much "white spacing" as I can. If anyone have a hint how to implement the following, I would really appreciate:
Remove white gap between chart tittle and chart itself;
Remove white gap between tick labels and the bottow end of the image;
Remove the light gray line that represent the ticks on the bottom part of the chart. Right now the ticks labels and this line are overlapping.
This is the code I'm using to customize the chart:
CategoryPlot categoryplot = lineChart.getCategoryPlot();
lineChart.setTitle(
new org.jfree.chart.title.TextTitle(lineChart.getTitle().getText(),
new Font("SansSerif", Font.PLAIN, 10)
)
);
lineChart.setBackgroundPaint(Color.white);
categoryplot.setBackgroundPaint(Color.WHITE);
CategoryAxis domainAxis = new CategoryAxis();
domainAxis.setMaximumCategoryLabelLines(4);
categoryplot.setDomainAxis(domainAxis);
Font font = new Font("Courier", Font.PLAIN, 8);
categoryplot.getDomainAxis().setTickLabelFont(font);
categoryplot.getDomainAxis().setCategoryLabelPositionOffset(-6);
categoryplot.getDomainAxis().setTickLabelInsets(
new RectangleInsets(1.0, 1.0, 1.0, 1.0));
NumberAxis yAxis = (NumberAxis) categoryplot.getRangeAxis();
yAxis.setAutoRangeIncludesZero(false);
categoryplot.getRenderer().setSeriesStroke(
1,
new BasicStroke(
2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
1.0f, new float[] {6.0f, 6.0f}, 0.0f
)
);
categoryplot.setDomainGridlinesVisible(true);
categoryplot.setRangeGridlinesVisible(true);
categoryplot.setDomainGridlinePaint(Color.GRAY);
categoryplot.setRangeGridlinePaint(Color.GRAY);
categoryplot.getRenderer().setSeriesStroke(
2,
new BasicStroke(
2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
1.0f, new float[] {6.0f, 6.0f}, 0.0f
)
);
categoryplot.getRenderer().setSeriesPaint(0, Color.BLUE);
categoryplot.getRenderer().setSeriesPaint(1, Color.RED);
categoryplot.getRenderer().setSeriesPaint(2, Color.RED);
LineAndShapeRenderer renderer = (LineAndShapeRenderer) categoryplot.getRenderer();
renderer.setBaseShapesVisible(true);
renderer.setDrawOutlines(true);
renderer.setUseFillPaint(true);
renderer.setBaseFillPaint(Color.white);
renderer.setSeriesShape(0, new Ellipse2D.Double(-5, -5, 10, 10));
Im trying to change the background color to my bar chart and so far nothing seems to be working
Here is my code below:
JFreeChart expbarchart = ChartFactory.createBarChart("Monthly Expenditures", "Expenditure Type", "Amount (£)", barexp, PlotOrientation.VERTICAL, false, true, false);
ChartPanel expframe = new ChartPanel(expbarchart);
expframe.setLocation(695, 49);
expframe.setSize(641,500);
expframe.setBorder(new EtchedBorder(EtchedBorder.LOWERED, new Color(173, 216, 230), null));
graphpanel.add(expframe);
I have tried doing .setbackground() and it does not seem to work
Thanks
BarChartDemo1 shows you how to set the chart background paint:
chart.setBackgroundPaint(new Color(173, 216, 230));
It also shows you how to set a ChartTheme that you can change:
StandardChartTheme theme = new StandardChartTheme("JFree/Shadow", true);
Color color = new Color(173, 216, 230);
theme.setPlotBackgroundPaint(color);
theme.setChartBackgroundPaint(color.brighter());
ChartFactory.setChartTheme(theme);
try this and customize as per your need.
// create the chart...
JFreeChart chart = ChartFactory.createLineChart(
"# of Sales by Month", // chart title
"Month", // domain axis label
"# of Sales", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
true, // include legend
true, // tooltips
false // urls
);
if(subTitle != null && !subTitle.isEmpty())
chart.addSubtitle(new TextTitle(subTitle));
chart.setBackgroundPaint(Color.BLUE);
// Paint p = new GradientPaint(0, 0, Color.white, 1000, 0, Color.green);
// chart.setBackgroundPaint(p);
CategoryPlot plot = (CategoryPlot) chart.getPlot();
plot.setRangePannable(true);
plot.setRangeGridlinesVisible(true);
plot.setBackgroundAlpha(1);
plot.setBackgroundPaint(Color.BLUE);
// Paint p = new GradientPaint(0, 0, Color.white, 1000, 0, Color.green);
// plot.setBackgroundPaint(p);
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
ChartUtilities.applyCurrentTheme(chart);
You have to use JFreeChart.getPlot().setBackgroundPaint(Color.XXXXXX); like this:
public static void main(String[] args) {
DefaultPieDataset pieDataset = new DefaultPieDataset();
pieDataset.setValue("LoggedIn" +": "+ 5, 10);
pieDataset.setValue("LoggedOut" +": "+ 8, 17);
JFreeChart jfc = ChartFactory.createPieChart("title", pieDataset, false, false, false );
jfc.getPlot().setBackgroundPaint(Color.BLUE);
ChartPanel chart = new ChartPanel(jfc);
JFrame frame = new JFrame();
frame.add(chart);
frame.pack();
frame.setVisible(true);
}
Of course, you can catch the desired color by several different methods regarding your needs, for example:
Color color1 = "anyComponent".getBackgroundColor();
and then apply
jfc.getPlot().setBackgroundPaint(color1);
I hope it helps!
I have managed to plot a linear graph. The following is the code:
private JPanel createGraph() {
JPanel panel = new JPanel();
XYSeries series = new XYSeries("MyGraph");
series.add(0, 1);
series.add(1, 2);
series.add(2, 5);
series.add(7, 8);
series.add(9, 10);
XYSeriesCollection dataset = new XYSeriesCollection();
dataset.addSeries(series);
JFreeChart chart = ChartFactory.createXYLineChart(
"XY Chart",
"x-axis",
"y-axis",
dataset,
PlotOrientation.VERTICAL,
true,
true,
false
);
ChartPanel chartPanel = new ChartPanel(chart);
panel.add(chartPanel);
return panel;
}
However, it is not a smooth curve, but straight lines. How can I make it smooth please?
I believe that you are looking for XYSplineRenderer
You should be able to do
chart.getXYPlot().setRenderer(new XYSplineRenderer());
after your chart is constructed.
I am using StackedBarChart in the jfreechart API to display no.records in a table which comes from the database. There are 82 tables which im putting on the domain axis and the no. of records in the Range axis. But the problem that I am facing is that because of so many tables in the domain axis, the width of the bar reduces.
Following is my code :
private JFreeChart createChart(CategoryDataset dataset)
{
JFreeChart chart = ChartFactory.createStackedBarChart(
"Stacked Bar Chart", "Task Description", "No_Of_Records", dataset,
PlotOrientation.VERTICAL, true, true, false);
CategoryPlot categoryplot = (CategoryPlot)chart.getPlot();
CategoryAxis categoryaxis = categoryplot.getDomainAxis();
categoryaxis.setMaximumCategoryLabelWidthRatio(100);
categoryaxis.setLowerMargin(0.02D);
categoryaxis.setUpperMargin(0.02D);
NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();
numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
numberaxis.setRange(0.0D, 1000D);
BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer();
barrenderer.setDrawBarOutline(false);
GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, new Color(0, 0, 64));
barrenderer.setSeriesPaint(0, gradientpaint);
return chart;
}
I have tried using a
setItemMargin();
setMaxWidth();
setMaximumBarWidth();
on the BarRenderer, but all in vain..
Any help is appreciated
Regards,
You can experiment with setCategoryMargin(). Also, see how it looks when you right-click and zoom in.