Re: [gdal-dev] Attempting to merge DEMs with gdal_merge.py - getting Float32 clipped to 255.0

2011-05-17 Thread Michal Migurski
I'll install the latest and see if the problem disappears! -mike. On May 16, 2011, at 10:56 AM, Chaitanya kumar CH wrote: Michal, I can't think of anything else that may be causing this. Can you run this using the latest version, gdal-1.8? On Mon, May 16, 2011 at 11:14 PM, Michal

Re: [gdal-dev] Attempting to merge DEMs with gdal_merge.py - getting Float32 clipped to 255.0

2011-05-16 Thread Michal Migurski
Hi Chatinya, Thanks for the advice - I've definitely ensured that the file does not exist first, cleared it out and re-ran gdal_merge.py. The result still has the same clipping to 255. -mike. On May 15, 2011, at 9:19 PM, Chaitanya kumar CH wrote: Michal, Check if the output file already

Re: [gdal-dev] Attempting to merge DEMs with gdal_merge.py - getting Float32 clipped to 255.0

2011-05-16 Thread Chaitanya kumar CH
Michal, I can't think of anything else that may be causing this. Can you run this using the latest version, gdal-1.8? On Mon, May 16, 2011 at 11:14 PM, Michal Migurski m...@stamen.com wrote: Hi Chaitanya, Thanks for the advice - I've definitely ensured that the file does not exist first,

[gdal-dev] Attempting to merge DEMs with gdal_merge.py - getting Float32 clipped to 255.0

2011-05-15 Thread Michal Migurski
Hello, I'm attempting to merge a number of DEMs in .flt format using gdal_merge.py. It's NED 1/3 arc second data, so each one is a Float32 10812x10812 raster with a range of values from a few meters below sea level to 1.4km. I'm getting back an image with an incorrect datatype even though I

Re: [gdal-dev] Attempting to merge DEMs with gdal_merge.py - getting Float32 clipped to 255.0

2011-05-15 Thread Chaitanya kumar CH
Michal, Check if the output file already exists. The script won't create a new one if it already exists. On Mon, May 16, 2011 at 12:45 AM, Michal Migurski m...@stamen.com wrote: Hello, I'm attempting to merge a number of DEMs in .flt format using gdal_merge.py. It's NED 1/3 arc second data,