Tagged Questions

1
vote
0answers
76 views

Are there limitations with gdal virtual raster option?

I am new at Postgis and I'm groping... I pretend to rasterize some weighty vector layers in Postgis, do some map algebra and reclassification with them and visualize intermediate as well as final ...
0
votes
1answer
50 views

Should a GDAL Plugin be the same version as GDAL aready built into QGIS

Should a GDAL Plugin be the same version as the GDAL that's aready built into the QGIS version installed? Or,can another different version of GDAL be built and it installed as a Plugin for QGIS, ...
6
votes
3answers
567 views

How to extract slope from topographic raster map?

I am working on a project for a machine learning class wherein I extract features from a topographic raster map and then classify the traversability of the terrain. One of the features I need to ...
0
votes
0answers
78 views

How can i apply stretch to MinMax to the channels of image using GDAL

in Qgis i set Min/Max values of rasterband, to apply the chnage to the image channels i developpe this code in c++ but no thing has changed in image: GDALDataset *ptRasterDataSet; ptRasterDataSet = ( ...