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This question already has an answer here:

Sextante for ArcGIS comes with SAGA modules.

I know that I can use GRASS algorithms in Sextante under gvSIG.

But how can I use GRASS algorithms in Sextante under ArcGIS Desktop?

I tried to look for any instructions, but could not find any. Any suggestions?

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marked as duplicate by PolyGeo Jul 14 at 6:18

This question was marked as an exact duplicate of an existing question.

I found a blog entitled SAGA and GRASS running in ArcGIS through SEXTANTE which says:

This time, I am showing how SAGA and SEXTANTE algorithms can be executed just like native SEXTANTE algorithms. This is completely true for SAGA ones, but I'm having a bit of trouble with GRASS ones, specially vector ones. This is not a GRASS or SEXTANTE problem, but just a problem caused by the strange behaviour of Java when I call the application (SAGA or GRASS) from ArcGIS, since it freezes and I haven't been able to solve it.

I have not been able to uncover any other reports of anyone succeeding at doing what you hope to.

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