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gdal_merge: gdal_merge.py mosaics a set of images

gdal_merge - gdal_merge.py mosaics a set of images
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 [value...]"] [-ot datatype] [-createonly] input_files


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. In areas of overlap, the last image will be copied over earlier ones. -o out_filename: The name of the output file, which will be created if it does not already exist (defaults to 'out.tif'). -of format: Output format, defaults to GeoTIFF (GTiff). -co NAME=VALUE: Creation option for output file. Multiple options can be specified. -ot datatype: Force the output image bands to have a specific type. Use type names (ie. Byte, Int16,...) -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 image bands with these values. However, it is not marked as the nodata value in the output file. If only one value is given, the same value is used in all the bands. -createonly: The output file is created (and potentially pre-initialized) but no input image data is copied into it. NOTE: gdal_merge.py is a Python script, and will only work if GDAL was built with Python support.


Frank Warmerdam <warmerdam@pobox.com>, Silke Reimer <silke@intevation.de> GDAL_MERGE(1)

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