如何将大型 JTS 多边形拆分为多个 1 km x 1 km 的几何图形？

Question

I am using Java, Geotools and JTS.

I have the envelope geometry of a large polygon's geometry.

I want to split it up into a collection of polygons that are all 1 km by 1 km wide.

Any idea for how to do this? Thank you. Peter

Answer 1

I noticed that my approach is nonsense !

As the earth is not flat, you can not split a polygon into real squares with identical width/length !

If you did, the squares would overlap.

Answer 2

You need to use a planar projection and the GeoTools vector GridFeatureBuilder .

There is example code (using India) in my answer to this question .