[GRASS-dev] calculating inverse matrix

Michael Barton Michael.Barton at asu.edu
Tue Mar 26 10:27:55 PDT 2013

i.pan.sharpen contains python code to do an inverse pca. It uses some of the new r.mapcalc capabilities to do parallel processing on multi-core processors. So it's pretty fast.

C. Michael Barton
Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

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On Mar 26, 2013, at 4:24 AM, <grass-dev-request at lists.osgeo.org<mailto:grass-dev-request at lists.osgeo.org>>

From: Martin Landa <landa.martin at gmail.com<mailto:landa.martin at gmail.com>>
Subject: [GRASS-dev] calculating inverse matrix
Date: March 26, 2013 4:20:08 AM MST
To: GRASS developers list <grass-dev at lists.osgeo.org<mailto:grass-dev at lists.osgeo.org>>

Hi all,

I found several methods in GRASS code which compute inverse matrix

1) v.generalize


2) i.orto.photo


3) GMath lib (depends on lapack/blas)


It would be nice to consolidate it including data structures (modules
noted above define their own data structures for matrix). In other
worlds to incorporate v.generalize/i.orto.photo code into GMath lib.
Any pointers here?

Thanks, Martin

Martin Landa <landa.martin gmail.com<http://gmail.com/>> * http://geo.fsv.cvut.cz/~landa

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