CODEWITHSUNDEEP
javajfreechart
user1172468
user1172468

Reputation: 5464

JFreeChart : how do you put multiple charts into a composite chart

In JFreeChart is there a notion of a composite Chart.

I need to layout several charts in a grid like arrangement.

Each chart in the grid needs to have its own separate title.

I would like to be able to save this composite chart into a png file

I would get a code snippet that explains how to do this.

Upvotes: 6

Views: 3980

Answers (1)

trashgod
trashgod

Reputation: 205765

As shown here, ChartPanel can be placed in any desired Swing layout. The example cited uses GridLayout. ChartUtilities has methods for rendering a chart as a .png. I see several approaches to getting a composite image:

  • Use Robot#createScreenCapture() to image the layout, as shown here and here; the resulting BufferedImage can be saved using ImageIO.write().

  • Use JFreeChart#createBufferedImage() to render each chart and impose the individual images into a BufferedImage to create a single image, as suggested here.

  • Implement the Printable interface to render the image in a graphics context, as shown here.

image

Upvotes: 7

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