Get a pixel value

Question

How can i do this operation:

I want to get a pixel value fro the satellite image (Landat, GeoTIFF, 7 bands) using qgis-python.

What operators should i use? (for example in qgis's Python Console)

Answer 1

I do not know whether work for you or not , but you can check out gdallocationinfo. it is a raster query tool from gdal...

The gdallocationinfo utility provide a mechanism to query information about a pixel given it's location in one of a variety of coordinate systems. Several reporting options are provided.

$ gdallocationinfo utm.tif 256 256
Report:
  Location: (256P,256L)
  Band 1:
    Value: 115

i hope it helps you...