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I'm looking for something similar to the combine function from the ISelectionSet interface from ArcObject's SDK 10 .NET framework on a more scaled down level. Ergo, I don't plan on using that interface to combine objects that manage rows or features. If I need to I'll do a cast as some type of table like object, but nothing drawing from ArcObjects.

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Not following your train of thought... can you explain a little further? Also JTS is vector-only, it has nothing to do with raster, so not sure why it was mentioned. –  blah238 Jan 16 '13 at 21:11
    
ah okay then I guess I can't use anything from JTS. Simply are there any open source distribution Java tools that I can use to merge raster data sets. –  Carl Carlson Jan 16 '13 at 21:45
    
gdal.org/java –  blah238 Jan 16 '13 at 22:30
    
Not aware of a Java equivalent but the source to gdal_merge.py might be helpful: svn.osgeo.org/gdal/trunk/gdal/swig/python/scripts/gdal_merge.py –  blah238 Jan 16 '13 at 22:33
    
Here is someone's Java take on it: code.google.com/p/geobricks/source/browse/trunk/geobricks/src/… –  blah238 Jan 16 '13 at 22:35
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up vote 1 down vote accepted

The Geospatial Data Abstraction Library (GDAL) has bindings for Java.

It also includes a Python script for merging rasters: gdal_merge.py (source code here)

Lastly here is someone's take on a Java version of the gdal_merge tool.

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