[gdal-dev] GDAL query creation options?

Is there a way to programatically query what dataset creation/layer creation options are available for a driver?I'd like to be able to do something like: driver-listDCO(*options) -- View this message in context: http://osgeo-org.1560.x6.nabble.com/GDAL-query-creation-options-tp5210356.html

Re: [gdal-dev] GDAL query creation options?

Selon jramm jamessr...@gmail.com: Is there a way to programatically query what dataset creation/layer creation options are available for a driver?I'd like to be able to do something like: driver-listDCO(*options) driver-GetMetadataItem(GDAL_DMD_CREATIONOPTIONLIST) for raster drivers, and

[gdal-dev] Overlay shapefile onto Geotiff image

Hi, I have been working on this issue for quite a while. I currently have a GeoTiff image and a shapefile. I would like to overlay the shapefile on the Geotiff, is this possible with Gdal? I looked into gdal_rasterize but I just don't know how to incorporate it with what I need. A code

[gdal-dev] Creating a transparent GeoTIFF, writing shape data over it, reading GeoTIFF writing as PNG with transparency.

I have attempted to answer Questions 1 and 3 here: https://github.com/geopaparazzi/Spatialite-Tasks-with-Sql-Scripts/wiki/Project-1811-gdal_question I will start on Question 2 now, since I have not used gdal_rasterize that often. A quick answer is however, 1) gdal_translate -of PNG -a_nodata

Re: [gdal-dev] GDALWarp API and paletted images

Great, thanks! I tried this, but got only a red image as result, so I guess only the first channel was used. This is the relevant code, where _ds is the input paletted data set vrtDS = vrtDriver-Create(, origW, origH, 3, GDT_Byte, NULL); double geoTransform[6];

[gdal-dev] PostgreSQL drivers

I have PostgreSQL 9.4 running on a 64-bit Centos 6.4 machine, I have then used yum to install gdal.x86_641.9.2-6.rhel6 gdal-devel.x86_64 1.9.2-6.rhel6 gdal-java.x86_64 1.9.2-6.rhel6 gdal-libs.x86_64 1.9.2-6.rhel6 all from the pgdg94 repository. And

[gdal-dev] Creating a transparent GeoTIFF, writing shape data over it, reading GeoTIFF writing as PNG with transparency.

Question 2 is now finished: https://github.com/geopaparazzi/Spatialite-Tasks-with-Sql-Scripts/wiki/Project-1811-gdal_question-02 Short version: gdal_rasterize -tr 0.475211759942328 0.475212956422887 -te 24800 20700 25800 21300 -ot Byte -init 192 -a_nodata 192 -burn 0 -burn 173 -burn 83 -sql

[gdal-dev] gdalwarp on a .vrt: Using internal nodata values (eg 0) for image (?)

I am experimenting with using 'gdalwarp' on a .vrt (first time), but I'm not sure what I'm doing wrong. I've been running this: gdalwarp -s_srs EPSG:4326 -t_srs EPSG:3857 -r bilinear -of VRT merged.vrt srtm_merged_3857.vrt and it processes fast (far far *too fast* for this global file) and

Re: [gdal-dev] gdalwarp on a .vrt: Using internal nodata values (eg 0) for image (?)

One notably huge difference is that there is a huge jump in pixel size (from 0.0008323 to 205.686440189378940)... ah, duh. Unit change. On Thu, Jun 11, 2015 at 2:26 PM, Ari Simmons ari.ucb.f...@gmail.com wrote: I am experimenting with using 'gdalwarp' on a .vrt (first time), but I'm

Re: [gdal-dev] gdalwarp on a .vrt: Using internal nodata values (eg 0) for image (?)

On Thu, Jun 11, 2015 at 2:38 PM, Ari Simmons ari.ucb.f...@gmail.com wrote: One notably huge difference is that there is a huge jump in pixel size (from 0.0008323 to 205.686440189378940)... ah, duh. Unit change. On Thu, Jun 11, 2015 at 2:26 PM, Ari Simmons ari.ucb.f...@gmail.com

[gdal-dev] is there a vector testfile with Integer64 values?

Hi, In adapting rgdal for GDAL 2.0.0, it would be useful to know that clamping, etc, and workarounds for integers in Integer64 fields that exceed INT_MAX or INT_MIN actually work. Which of the autotest vector files include Integer64 fields that test reading with Integer or String? The files

[gdal-dev] gdal_rasterize does not burn polygon attributes

I'm running gdal_rasterize, trying to make it create a new tif from polygons, using an attribute field as the burn value. Here is my command: gdal_rasterize -tr 5 5 -a SOP -l test -a_nodata 0 test.shp test.tif I end up with an image that is all 0's. The shapefile is correct and can be read by

Re: [gdal-dev] GDALWarp API and paletted images

Selon Thomas Sevaldrud tho...@silentwings.no: Great, thanks! I tried this, but got only a red image as result, so I guess only the first channel was used. This is the relevant code, where _ds is the input paletted data set vrtDS = vrtDriver-Create(, origW, origH, 3, GDT_Byte, NULL);