I wrote a script to do something like this at one point, though I can't find
it now. It was intended for terrain, but could be used per band on imagery.
It used r.buffer to create a distance gradient and then r.recode to convert
this gradient to a percentage. I then used r.mapcalc to merge the 2
kaipi wrote:
> I need to patch rasters containing NULL areas with
> alternative rasters. I can
> do this with r.patch but due to different
> quality/resolution of the rasters
> this produces prominent seamlines. Is there a way to
> feather/blend between
> merged rasters using Grass GIS?
for blend
I guess you can do it with a combination of the existing tools:
You can create a buffer zone between your 2 dataset where they merge and
set the buffer to null values. Then using r.fillnulls
(http://grass.osgeo.org/gdp/html_grass64/r.fillnulls.html) and you can
fill the gap using both datasets.
Ho
I need to patch rasters containing NULL areas with alternative rasters. I can
do this with r.patch but due to different quality/resolution of the rasters
this produces prominent seamlines. Is there a way to feather/blend between
merged rasters using Grass GIS?
Thanks,
Kaipi
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