NAME
gdal_merge.py - mosaics a set of images
SYNOPSIS
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
DESCRIPTION
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.
AUTHORS
Frank Warmerdam <[email protected]> Silke Reimer <[email protected]>