Wednesday, August 27, 2008

How to read a grass raster and script on it

I just added a r.read command to the console commands list. Currently it can read grass raster.

The console scripting code:

jgrass {
$map = r.read --igrass-in bacino_brenta_pit --ograss-out *
}

rasterData = map.getJGrassRasterData();

rows = rasterData.getRows();
cols = rasterData.getCols();

println rows + " " + cols;

rows--;
cols--;
for (i in 0..rows) {
for (j in 0..cols){
print rasterData.getValueAt(i, j) + " ";
}
println "";
}


Please note that groovy really doesn't need type declaration.


Well on the raster data you could do some nice calculus:

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