gdal_merge.py1
Mosaics a set of images
Usage
gdal_merge.py [-o
out_filename]
[-of
out_format]
[-co
NAME=VALUE]
*
[-ps
pixelsize_x
pixelsize_y]
[-separate]
[-v]
[-pct]
[-ul_lr
ulx
uly
lrx
lry]
[-n
nodata_value]
[-init
value]
[-seperate]
input_files
Overview
This utility will automatically mosaic a set of images. All the images must be in the same coordinate system and have a matching number of bands, but they may be overlapping, and at different resolutions.
-
-o out_filename: -
The name of the output file to be created.
-
-of format: -
Output format, defaults to GeoTIFF (GTiff).
-
-co NAME=VALUE: -
Creation option for output file. Multiple options can be specified.
- -ps pixelsize_x pixelsize_y:
-
Pixel size to be used for the output file. If not specified the resolution of the first input file will be used.
- -ul_lr ulx uly lrx lry:
-
The extents of the output file. If not specified the aggregate extents of all input files will be used.
-v:-
Generate verbose output of mosaicing operations as they are done.
-separate:-
Place each input file into a separate stacked band.
-pct:-
Grab a pseudocolor table from the first input image, and use it for the output. Merging pseudocolored images this way assumes that all input files use the same color table.
-
-n nodata_value: -
Ignore pixels from files being merged in with this pixel value.
-
-init value: -
Pre-initialize the output file with this value. However, it is not marked as the nodata value in the output file.
NOTE: gdal_merge.py is a Python script, and will only work if GDAL was built with Python support.