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

Hi Aaron, Rasters are rectangular grids of data. But the data is not always rectangular. It may have holes. It may be skewed, especially if it was warped from another projection. To note the areas with these hole and areas with no information, we define a certain pixel value. We call it nodata val

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

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

[gdal-dev] installing debian GDAL version >= 1.9

Seeking advice on updating a debian box to GDAL version >= 1.9: Etienne Tourigny Mon, 9 Jul 2012 23:01:35 -0300 > What you want to achieve can be done with [gdalwarp. ...] You will > need gdal version 1.9 to work properly with netcdf files (especially > to use gdalwarp). I'm currently running $

Re: [gdal-dev] Basic OpenStreetMap driver with ReadOSM?

On 12-07-07 8:14 AM, Rahkonen Jukka wrote: > Osm2pgsql outputs only to PostGIS and even PostGIS is super fine I consider > that the threshold in installing and managing it is too high for many users. > In addition, there has been only two Windows builds of osm2pgsql available > ever and the latt

Re: [gdal-dev] reading compressed data?

Thanks for the info. I probably should have mentioned that I'm working in C++ on windows by the way. I'm working with NITF images that are simply wrapped jpegs that are in one piece. For now, I just need to read the NITF file and send the jpeg image data over the network. Temporarily, I'm j

Re: [gdal-dev] reading compressed data?

Le mardi 10 juillet 2012 18:53:44, Joe Lyga a écrit : > I'm new to GDAL, and I'm wondering if there's a way I can get the buffer > of raw compressed image data. I have an NITF file that contains a jpeg > image. I've been able to use the rasterio function to get uncompressed > image data, but what

[gdal-dev] New OGR driver to read OpenStreetMap .osm / .pbf files

Hi, Following the recent brainstorming with Jukka, I've pushed into trunk a driver to read OpenStreetMap .osm / .pbf files . No particularly exotic dependencies : SQLite (and Expat for OSM XML files) See http://www.gdal.org/ogr/drv_osm.html for the details (will be available in a few hours).

[gdal-dev] reading compressed data?

I'm new to GDAL, and I'm wondering if there's a way I can get the buffer of raw compressed image data. I have an NITF file that contains a jpeg image. I've been able to use the rasterio function to get uncompressed image data, but what I really need is to just send along that jpeg image witho

[gdal-dev] ESRI's Mercator_Auxiliary_Sphere projection

My application uses the GDAL & OGR libraries to load maps containing projection metadata. As part of testing, I tried to load a GeoTIFF image exported from ESRI's ArcMap 10.0 using the default coordinate system, the resulting OGRSpatialReference does not validate successfully. Is there a way to

Re: [gdal-dev] Label from OGR Style in a VRT output over a tiff in a geospatial PDF

Thanks for the info. I'll see what features I think would be useful and see if I can come up with patches. Christy On 07/10/2012 02:20 AM, Even Rouault wrote: Le mardi 10 juillet 2012 01:10:04, Christy Nieman a écrit : It seems that there are other features from http://www.gdal.org/ogr/ogr_f

[gdal-dev] Open DXF issues when writing

Hi, The current ogr version seems to be quite broken when it comes to writing DXF files. See bug report at: http://trac.osgeo.org/gdal/ticket/4680 (Invalid DXF files) and maillist threads: http://lists.osgeo.org/pipermail/gdal-dev/2012-July/04.html und http://lists.osgeo.org/pipermail/gd