Re: How do I fill in colours over land areas?

• To: John Low <crslkkj@xxxxxxxxxx>
• Subject: Re: How do I fill in colours over land areas?
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Fri, 25 Oct 2002 05:51:19 -0500

Hi John,

> I used Gridded2DSet to draw a map coastline on the display.  This worked 
> fine. How do you now fill the inner region with a colour? I will appreciate 
> if you can provide a little code.

This method in visad/DelaunayCustom.java:

    public static Irregular2DSet fill(Gridded2DSet set)

will return an Irregular2DSet for the interior of the region
surrounded by set, assuming it is a Gridded2DSet with manifold
dimension = 1 that does not self-interset. Note 'fill' connects
the first and last points of set to make a closed boundary.

Then link the Irregular2DSet to your Display, passing an array of
ConstantMaps to addReference() to define the color.

Good luck,
Bill

• References:
  • How do I fill in colours over land areas?
    • From: John Low