CODEWITHSUNDEEP
javaplotjfreechartlinechart
TomC
TomC

Reputation: 53

JFreeChart alternate background color

I'm trying to set two colors that need to be switched at every vertical tick label as background of a JFreeChart linechart.

I want the line chart to appear as the image in this link, where two different light grays alternate as background:

image

How can I achieve so in JFreeChart?

P.S. I've seen that there is plot.setRangeTickBandPaint(new Color(200, 200, 100, 100)) method for XYPlot plot type, used in ScatterPlot4 in JFreeChart's demo jar, however, this method does not exist in the line chart plot type.

Upvotes: 1

Views: 401

Answers (1)

trashgod
trashgod

Reputation: 205775

Starting from this time series example and using setRangeTickBandPaint(), I get the result pictured below:

image

In particular, I used

  • Contrasting colors for the background and bands:

      plot.setBackgroundPaint(new Color(0xF0F0F0));
  plot.setRangeTickBandPaint(new Color(0xE0E0E0));

  • A suitable DateFormat on the domain:

      domain.setDateFormatOverride(new SimpleDateFormat("MMM"));

  • A fixed TickUnit on the range:

      NumberAxis range = (NumberAxis) plot.getRangeAxis();
  range.setTickUnit(new NumberTickUnit(5));

  • DateTickMarkPosition.MIDDLE to center the tick labels:

      domain.setTickMarkPosition(DateTickMarkPosition.MIDDLE);

As an aside, there is no line chart plot type. Instead, contrast the source of your chosen ChartFactory with that of a typical time series.

Upvotes: 2

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