CODEWITHSUNDEEP
javajfreechart
WestCoastProjects
WestCoastProjects

Reputation: 63082

Server-side/ non-interactive rendering of Charts to image files from JFreeChart

How does one programmatically render image files from JFreeChart . I have code for ChartPanel: is it possible to render directly to an image - without creating AWT/GUI components?

val chart = ..  // Imagine code to generate chart data here..
val panel = new ChartPanel(chart)
panel.renderToImage() // replace this with logic to save image file

Upvotes: 3

Views: 896

Answers (1)

trashgod
trashgod

Reputation: 205795

Use one of the ChartUtilities methods, such as writeChartAsJPEG() or writeChartAsPNG(), that can write to a java.io.OutputStream; or saveChartAsJPEG() or saveChartAsPNG(), that can write to a java.io.File. Some examples are seen here and here. For example,

ChartUtilities.saveChartAsPNG(new File("chart.png"), chart, width, height);

You'll also want to look into headless mode, mentioned here.

Upvotes: 3

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