hey Michael
i have done this with a vrt.
you can use a
The ComplexSource supports adding a custom lookup table to transform the
source values to the destination. The LUT can be specified using the
following form:
[src value 1]:[dest value 1],[src value 2]:[dest value
2],...
http://www.gd
Micheal,
Check out repl_val.py in the GDAL/python samples.
http://svn.osgeo.org/gdal/trunk/gdal/swig/python/samples/
Changing it slightly you can do what you want.
original replace single value:
scanline = numpy.choose( numpy.equal( scanline, inNoData),
Sorry to come out so often with GMT solutions in this GDAL list but
somethings are so trivial there.
If you can trust that all your negative values are (mean)seawater,
this will do the job
grdclip yourGrid -Sb0/0 -Gclipped_grid.nc
Note, one need the dev
Michael,
I'm not sure if you can do this using one of the existing utilities, you
may be able to do this my creating a virtual file (gdalbuildvrt) and
modifying it see - http://www.gdal.org/gdal_vrttut.html, but I have not
attempted this. An alternative is to do this using the API and something
l
e---
From: Smith, Michael
To: gdal-dev@lists.osgeo.org
Subject: [gdal-dev] substitute pixel values
Sent: Jan 09 '13 11:33
I have some DEMs that are created from lidar. For reasons related to
seeing currents and wind effect, we did not ask for the water to be
flattened, but rather it s
I have some DEMs that are created from lidar. For reasons related to seeing
currents and wind effect, we did not ask for the water to be flattened, but
rather it shows waves. This is cool, and what we wanted. BUT of course now we
want to create a second set of DEMs with a nice flat ocean.
I
