Geoscience Reference
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(a)
Flanders
Brussels
(b)
Brussels
(c)
Forest map
forest
no forest
0
25
50 km
Fig. 8.8
Image merging.
a
Forest map for Flanders,
b
Forest map for Brussels,
c
Merged forest
map
The next snippet uses the
-init
option to replace pixel values in an image.
Here we replace all pixels with value 30 to a value of 20. This can be performed
by initializing all values to 20 and then instruct
gdal_merge.py
to ignore all
values 30.
gdal_merge.py -n 30 -init 20 -pct -o brussels_no30.tif
ₒ
brussels.tif
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