Currently, the below chart is being created using JFreeChart library. The code to generate the above image is as follows: However, even though, I set the plot as black color using: plot.getRenderer().setSeriesPaint(2,new Color(0, 0, 0) ); The graph always appears red. How do I change the color from red to bla…
Tag: jfreechart
how to change dot shape with jfree polar plot?
I would like to know what are the methods to use to change dots polarplot size and shape . And also if it’s possible to disable dots for this type of plot . here is the code plotting polar of two series with default dots. Thank you Answer with it, default dots are square. Yes, the DefaultPolarItemRender…
How to get X pixel value from date index or string in JFreeChart?
I have the following sample app : How to implement the 2 “getX()” methods above, so they will return the X pixel values by inputting date index or date string ? Answer Given a ChartPanel, seen here, the following method finds the index item in the priceSeries and converts its time to Java2D coordi…
How to change JFreeChart vertical bar to a solid color?
I have the following sample code for a JFreeChart, how to change the vertical bars to a solid color [ right now it has some white color in each bar ] ? Answer As shown here, use a StandardXYBarPainter to get a flat effect instead of the default gradient. I tried, but didn’t work: renderer2.setDefaultBar…
Change the font size of the y-axis and x-axis values
In the following code, I want to reduce the font size of the y-axis and x-axis values. I searched and found these code: suppose you want to reduce the font size of number axis use the following code: suppose you want to reduce the font size of CategoryAxis use the following code: but unfortunately, the size o…
Why are these XYItemRenderer methods missing despite importing the right module?
I am trying to apply the solution found at here, but when I try to run it in IntelliJ, a couple of the XYItemRenderer methods like setBaseItemLabelGenerator, setBaseItemLabelPaint, setBasePositiveItemLabelPosition, etc are not found. I know I imported the right class because the declaration of the renderer is…
Unable to display center text in ring chart
I am trying to generate a donut or ring chart using jfree chart library. Ringchart was generated successfully but only the problem is centered text inside ring was not displaying. The following is the sample snippet. chart generation code And centered text related code is like below I am using jfreechart veri…
PlotOrientation of BoxAndWhiskerChart JFreeChart
I have a question about JFreeChart: Is it possible to change the PlotOrientation of a BoxAndWhiskerChart to horizontal? I have a histogram, and I want to add a BoxAndWhiskerChart below. I need it horizontal so I can use the same axis scale. I tried to change the orientation in the Plot and ChartPanel. Answer …
Let users edit series in JFreeChart XY plots
I’m using JFreeChart to make some graphs in a Java application. I’m trying to figure out how to let the user edit the series paint/stroke. In the Chart Properties window there’s a spot for this, but it just says “No editor implemented”. Is there a way through the API to provide J…
JFreeChart with truncated data points
I have created a JFreeChart with the code below, but the Y-Axis marks are truncated. How should I display the chart even though the data points are overlapped in the Y-Axis? Basically, I want the Y-Axis points to be generated from my file, a proper range is populated and displayed in the chart. Below is the i…