Demonstrates creating a custom GridAxisLabelHandler to customize how tick marks appear on a Y axis.

CustomAxisTicksExample.java

import com.metsci.glimpse.axis.Axis1D;
import com.metsci.glimpse.axis.painter.label.GridAxisLabelHandler;
import com.metsci.glimpse.examples.Example;
import com.metsci.glimpse.plot.timeline.StackedTimePlot2D;
import com.metsci.glimpse.plot.timeline.layout.TimePlotInfo;
import com.metsci.glimpse.support.settings.OceanLookAndFeel;

public class CustomAxisTicksExample extends CollapsibleTimelinePlotExample
{
    public static void main( String[] args ) throws Exception
    {
        Example example = Example.showWithSwing( new CustomAxisTicksExample( ) );

        // use the ocean look and feel
        example.getCanvas( ).setLookAndFeel( new OceanLookAndFeel( ) );
    }

    @Override
    public StackedTimePlot2D getLayout( )
    {
        StackedTimePlot2D plot = super.getLayout( );

        // get a reference to one of the plots
        TimePlotInfo plotInfo = plot.createTimePlot( );

        // create a custom AxisLabelHandler which always returns ticks at an interval of 10
        // regardless of the axis bounds
        GridAxisLabelHandler tickHandler = new GridAxisLabelHandler( )
        {
            @Override
            public double[] getTickPositions( Axis1D axis )
            {
                // round the start and end bounds of the axis to the nearest 10
                double start = Math.floor( axis.getMin( ) / 10.0 ) * 10.0;
                double end = Math.ceil( axis.getMax( ) / 10.0 ) * 10.0;

                // calculate the number of ticks between start and end
                int tickCount = ( int ) ( ( end - start ) / 10.0 );
                double[] ticks = new double[tickCount];

                // fill the ticks array
                for ( int i = 0; i < tickCount; i++ )
                {
                    ticks[i] = start + i * 10.0;
                }

                return ticks;
            }
        };

        // set the new AxisLabelHandler
        // NOTE: this call is not yet available, it will be included in the next Glimpse release
        plotInfo.getAxisPainter( ).setLabelHandlerY( tickHandler );

        return plot;
    }
}