Thanks a million, Moritz. Yours, Ismael 2012/4/18 Moritz Lennert <[email protected]>
> On 18/04/12 20:54, Ismael Gómez wrote: > >> Hello, >> >> I would like to use the v.rast.stats inside a loop in a python script. >> The thing is I just need to get one of the nine columns it generates >> (sum). >> As it runs many times in the loop, it takes a lot of (unnecessary, for >> this script) time and also creates a huge table with too many >> (unnecessary, for this script) columns. >> I was wondering then if there was a way to specify the calculation for >> just that single statistic. >> > > v.rast.stats is a script, so fairly easy to modify (see below for > accessing it). > > > > >> Also, I wanted to ask you if there is a way to access the source code of >> a specific module (in this case, v.rast.stats) via web (without >> downloading the whole source code), just to have a quick look at it (and >> try to adapt it to my needs, eventually contribute to it if possible, >> > > http://trac.osgeo.org/grass/**browser/grass<http://trac.osgeo.org/grass/browser/grass> > > For the development version (aka grass7) go to trunk, for other version to > branches. > > For v.rast.stats in the 6.4 release branch: > > http://trac.osgeo.org/grass/**browser/grass/branches/** > releasebranch_6_4/scripts/v.**rast.stats/v.rast.stats<http://trac.osgeo.org/grass/browser/grass/branches/releasebranch_6_4/scripts/v.rast.stats/v.rast.stats> > . > > See "Download in other formats" at the bottom for downloading it. > > A quick and dirty guess would be that modifying > > line 247: BASECOLS="n min max range mean stddev variance cf_var sum" > > and > > line 368 sed -e '1d' "$STATSTMP" | awk -F "|" '{printf "\nUPDATE > '${TABLE}' SET '${col1}' = %i , '${col2}' = %.2f , '${col3}' = %.2f , > '${col4}' = %.2f , '${col5}' = %.2f , '${col6}' = %.2f , '${col7}' = %.2f , > '${col8}' = %.2f , '${col9}' = %.2f WHERE '${KEYCOL}' = %i;", > $2,$3,$4,$5,$6,$7,$8,$9,$10,$**1}' > "$SQLTMP" > > could actually be enough. > > Moritz > -- Ismael G. Ingeniero de Caminos (UPM). Ingénieur des Ponts et Chaussées (ENPC). PhD researcher @ Urban & Land Planning Department @ ETSICCP UPM www.caminos.upm.es +34 91 336 67 83
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