[Qgis-user] Four band raster displaying funny

[Jukka Rahkonen]

Jonathan Moules <jonathanmoules at ...> writes:

> 
> 
> Further testing indicates that the same (optimal) result can be had using
a combination of a vrt and gdal_translate without having to manually bother
with memory management.

Hi,

I can confirm that question is in GDAL which by default considers four band
images as RGBA which is also documented in http://www.gdal.org/frmt_gtiff.html

The following gdal_merge command gives a good result when source bands are
in four separate tiff files and it is possible to select bands 1-2-3 for
natural colour or 4-2-1 for false colour infrared in QGIS.

gdal_merge.py -separate -of GTiff -co photometric=rgb -co compress=jpeg 
-o fourband_rgb_jpeg.tif 1.tif 2.tif 3.tif 4.tif

-Jukka Rahkonen-