[GRASS-dev] heavy processing and memory

Yann Chemin yann.chemin at gmail.com
Thu Apr 10 03:18:14 EDT 2008


Hello,

Attached is the processing time by percentage of completion of an
energy balance function using some iteration process.
Each cell processing is independent, the code follows r.example and
typical raster algorithm functions like ndvi and other simple
pixel-based equations.

The processing of a Landsat 5TM image takes 4.19hours on a Desktop computer.
The interesting thing I would like to ask is about the apparent
non-linearity of the processing curve. Is it normal?

Thank you,
Yann


-- 
Yann Chemin
International Rice Research Institute
Office: http://www.irri.org/gis
Perso: http://www.freewebs.com/ychemin
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