[GRASS-user] NDVI analyses with Landsat 8

[Huub Munstege]

Hi there all! Greetings from a happy Grass-root GISser on an Archlinux box...

Is there already a way to analyze the new Landsat 8 images (they are already available!)?
We are in particularly interested in the Normalized Standardized Vegetation Index (NDVI). We noticed a shift in wavelength range that is best depicted here: 

http://www.gisagmaps.com/landsat-8-about-refinements/
Doing the well-known raster map calculation with the bands 5 (NIR) and 4 (R) of L-8 doesn't give a satisfying result. Very bluntly we subtracted 0.12 from the 'ndvi' raster derived from L-8. Without doubr there must be more elegant and correct solutions. Any ideas are very welcome

Cheers,

 

________________________________
Huub Munstege
BPE 2836
Bamako, Rep. du Mali
Tel:      +223 20226397
Port:     +223 78370695 
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