Re: [gdal-dev] Reproject Landsat USGS image

2011-03-29 Thread Frank Warmerdam
On 11-03-28 05:10 AM, Luisa Peña wrote: Hello I got a reply to my message stating that " GDAL ignores a flag in the GEOTIF specification that says whether the coordinates are for the center or the lower-left of each pixel. " Is this true? It's exacly what I am obtaining and what Markus Neteler

Re: [gdal-dev] Reproject Landsat USGS image

2011-03-28 Thread Luisa Peña
Hello I got a reply to my message stating that " GDAL ignores a flag in the GEOTIF specification that says whether the coordinates are for the center or the lower-left of each pixel. " Is this true? It's exacly what I am obtaining and what Markus Neteler explained me (about the useage of NN metho

Re: [gdal-dev] Reproject Landsat USGS image

2011-03-25 Thread Luisa Peña
Back again on this I have talked with Markus Neteler and he told me that if I use gdalwarp with NN method, I will get a pixel shift and he suggested me to use bilinear method. The problem with bilinear is that my pixel values are changed (based on bilinear method) So is there any method to keep t

Re: [gdal-dev] Reproject Landsat USGS image

2011-03-23 Thread Luisa Peña
For now GDAL15 (the one that comes with winGRASS GIS) and GDAL16 binary. Why? (I have sent this to the wrong mailing list) > Why? > > > > 2011/3/22 Kyle Shannon > >> What version of gdal are you using? >> >> # >> Kyle Shannon >> Physical Science Technician >> RMRS Fi

Re: [gdal-dev] Reproject Landsat USGS image

2011-03-22 Thread Kyle Shannon
What version of gdal are you using? # Kyle Shannon Physical Science Technician RMRS Fire Sciences Lab Fire, Fuels & Smoke - RWU 4405 5775 Highway 10 W. Missoula, MT 59808 (406)829-6954 kshan...@fs.fed.us # On Tue, Mar 22, 2011 at 15:36, L

[gdal-dev] Reproject Landsat USGS image

2011-03-22 Thread Luisa Peña
Greetings I have sent an message a couple of days ago ( http://lists.osgeo.org/pipermail/gdal-dev/2011-March/028124.html) about this I used gdalwarp with this formulation gdalpwarp -t_srs -tr 30 30 input.tif output.tif Well it works fine but It seems to be with a deviation of half pixel on Latitu