OK, looks like [3] for me. Thanks.
On 7/28/2011 3:01 PM, Chaitanya kumar CH wrote:
The closest thing you can do without doing any coding is to use the
gdal_contour utility[1] to create a vector file and then use
gdal_rasterize [2] to burn them back to a raster. If you use
appropriate options,
The closest thing you can do without doing any coding is to use the
gdal_contour utility[1] to create a vector file and then use gdal_rasterize
[2] to burn them back to a raster. If you use appropriate options, all your
pixels will be clamped to the discrete levels used in gdal_contour. It's
straig
Thanks for the reply. I had looked at these before, and then looked
again after your note, but I just don't understand how I map the climate
variable values to different colors in the palette, along the lines of:
tmax < 30| color1
30 < tmax < 50 | color2
tmax > 50| c
. Life is too short for undocumented, proprietary data formats.
Stephen Crawford
Sent by: gdal-dev-boun...@lists.osgeo.org
07/26/2011 08:50 PM
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Subject
[gdal-dev] create classified PNG from ASCIIGrid
Hi All,
I have 60 or so asciiGrids of climate data
Sorry, here are the links.
[1]: http://www.gdal.org/rgb2pct.html
[2]: http://www.gdal.org/gdal_vrttut.html
[3]: http://www.gdal.org/formats_list.html
On Wed, Jul 27, 2011 at 10:30 AM, Chaitanya kumar CH wrote:
> Stephen,
>
> The docs for rgb2pct.py script [1] has an example that shows how to c
Stephen,
The docs for rgb2pct.py script [1] has an example that shows how to convert
to a paletted image using hand made VRT file.
You can use the "-of PNG" option to set the destination format as png and
the -pct option with your VRT file.
On Wed, Jul 27, 2011 at 2:42 AM, Stephen Crawford wrote
Hi All,
I have 60 or so asciiGrids of climate data that I would like to tun into
PNGs, with the climate values classified by color. I would like to
script this process using Python. Is there a way to do this with GDAL?
Or if not, is there any other open source way to do this?
Thanks,
Stev
