Raster Data Explained - Open Source Geospatial Tools: Applications in Earth Observation - page 58

Be cautious if you want to combine raster files with different data types in a single
multi-band raster. For instance, the data in a GeoTIFF multi-band image are stored
with the same data type for all bands. It can not hold floats (Float32) in one band and
integers (e.g., Byte) in the other. Make sure you first convert all input rasters to the
same data type. If not, the processing software will do it for you in an un-intended
way (e.g., by clipping floating point data to a maximum byte value of 255).

(a)

(b)

(c)

(d)

Fig. 3.5 Encoding schemes for multi-band images. a 3 3 image with three bands, b Band

sequential, c Band interleaved by line, d Band interleaved by pixel

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