[gdal-dev] gdalwarp makes landcover files blocky when shrinking
mathuin at gmail.com
Thu Jan 26 18:39:50 EST 2012
I am working with elevation and landcover data downloaded from the
USGS. I use gdalwarp to convert the data to a much smaller pixel. The
elevation data works very nicely with cubic resampling, but the only
resampling that works at all for the landcover data is
nearest-neighbor and that's very blocky. When I last worked with
landcover data, I used a majority algorithm which produced smoother
output -- but that algorithm is not implemented in gdalwarp.
I am looking over the source to gdalwarp to see how hard it is to add
a new algorithm. Other than that, though, what options are available
to me? Thanks in advance!
mathuin at gmail dot com
More information about the gdal-dev