The gdal_merge utility

A python script to mosaic a set of images

The official documentation for gdal_merge is at ​http://www.gdal.org/gdal_merge.html.

gdal_merge.py uses nearest neighbour resampling. If you want control over the resampling used, you should use gdalwarp instead.

{Win} Are there other ways of getting a list of images into gdal_merge without putting them all on the command line?

Method 1, use --optfile The text file is a directory list created in Windows by typing dir /b /s *.tif > 31_input_list.txt

python gdal_merge.py -n 0 -v -o mosaic_31.tif --optfile 31_input_list.txt

Method 2, use a batch file wrapper, see attached.