[Gdal-dev] gdal_merge and gdalwarp: Problems with 1 bit data

[Mateusz Loskot]

uwe.schmitz at lverma.nrw.de wrote:
> gdal_merge and gdalwarp seem to have problems writing RasterBands
> with 1 Bit depth. I'm using gdal-1.4.2 with old
> python bindings(also tested with FWTools-1.3.7).
> 
> ...
> Band 1 Block=6299x10 Type=Byte, ColorInterp=Palette
>   Metadata:
>     NBITS=1
>   Color Table (RGB with 2 entries)
>     0: 255,255,255,255
>     1: 0,0,0,255
> 
> Here I'm a little bit astonished to see Type=Byte 
> and ColorInterp=Palette, but may be it's caused by 
> abstraction of the interface.

Uwe,

AFAIK, 1-bit datatype (generally, non-byte) is represented as GDT_Byte,
so I'd call it as known behavior.

Cheers
-- 
Mateusz Loskot
http://mateusz.loskot.net