Re: [gdal-dev] gdal_merge.py on large Tiff's. gdalwarp not working properly.

2012-07-10 Thread aphunter
It looks like using -srcnodata 0 -dstnodata 5 worked using gdalwarp. Thanks for the help! What exactly do the 'values' mean? Thanks, Aaron -- View this message in context: http://osgeo-org.1560.n6.nabble.com/gdal-merge-py-on-large-Tiff-s-gdalwarp-not-working-properly-tp4986729p4987481.html S

Re: [gdal-dev] gdal_merge.py on large Tiff's. gdalwarp not working properly.

2012-07-08 Thread aphunter
Hi Jean-Claude. Thanks for the idea. Unfortunately it made the split a little larger. Is it possible to make the borders transparent, or remove them so the blending works properly as it does in gdal_merge.py? Thanks, Aaron -- View this message in context: http://osgeo-org.1560.n6.nabble.com/gdal

Re: [gdal-dev] gdal_merge.py on large Tiff's. gdalwarp not working properly.

2012-07-08 Thread aphunter
Definitely, thanks for the help. I am sort of new to this stuff. Below is the imagery from the small images I'm testing with. Here is the info for the reprojected image (EPSG26910 -> EPSG26911) Driver: GTiff/GeoTIFF Files: 26910_rs.tif Size is 4577, 11883 Coordinate System is: PROJCS["NAD83 / UTM

Re: [gdal-dev] gdal_merge.py on large Tiff's. gdalwarp not working properly.

2012-07-07 Thread aphunter
Thanks for the suggestion. Unfortunately building the .vrt file as you suggested, and using gdal_translate, gives me the same fractured image that gdal_warp does. I am not sure why gdal_merge.py works properly while the others don't. -- View this message in context: http://osgeo-org.1560.n6.nabbl

[gdal-dev] gdal_merge.py on large Tiff's. gdalwarp not working properly.

2012-07-07 Thread aphunter
Hi community! Here's my issue. I currently have two halves of California, one in EPSG:26910, and one in EPSG:26911. I successfully reprojected the 26910 segment into zone 26911, and if I make the images small, to test, gdal_merge.py works properly. See below: http://osgeo-org.1560.n6.nabble.com/