[GRASS-dev] question about i.vi

[Michael Barton]

I just tried out the new i.vi in GRASS 7 and it doesn't seem to do anything.

I've tested it with the landsat images in the NC07 demo data set. I set the region to match the landsat images and ran:

i.vi --overwrite viname=NDVI red=lsat7_2000_30 at landsat nir=lsat7_2000_40 at landsat green=lsat7_2000_20 at landsat blue=lsat7_2000_10 at landsat chan5=lsat7_2000_50 at landsat chan7=lsat7_2000_70 at landsat output=GEMI_lsat7_2000

I get a map with all 0's

I got the same result with the GEMI and NDVI routines. Am I doing something wrong or is this a bug.

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

voice: 	480-965-6262 (SHESC), 480-727-9746 (CSDC)
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www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











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