Time series chart horizontal gridlines through min/max peaks

问题

I am using JFreeChart to plot a timeseries chart. The chart is working fine, but the gridline alignment is becoming a problem.

My requirement is to show the horizontal gridlines through the peak values (i.e for the max and min value). Could you please let me know if there is any property for this, as I am getting grids randomly.

回答1:

Have you considered using a Marker to highlight the min and max values?

As trashgod sugested you use the Dataset to get the minimum and maximum values and then add a Marker to the Plot

Range range = dataset.getRangeBounds(true);
plot.addRangeMarker(new ValueMarker(range.getLowerBound(),Color.GREEN,new BasicStroke(2.0f)),Layer.BACKGROUND);
plot.addRangeMarker(new ValueMarker(range.getUpperBound(),Color.BLUE,new BasicStroke(2.0f)),Layer.BACKGROUND);

来源：https://stackoverflow.com/questions/14315938/time-series-chart-horizontal-gridlines-through-min-max-peaks