NAME

       gdal_fillnodata - gdal_fillnodata.py fill raster regions by interpolation from edges

SYNOPSIS

       gdal_fillnodata.py [-q] [-md max_distance] [-si smooth_iterations]
                       [-o name=value] [-b band]
                       srcfile [-nomask] [-mask filename] [-of format] [dstfile]

DESCRIPTION

       The gdal_fillnodata.py script fills selection regions (usually nodata areas) by
       interpolating from valid pixels around the edges of the area.

       Additional details on the algorithm are available in the GDALFillNodata() docs.

       -q:
           The script runs in quiet mode. The progress monitor is supressed and routine messages
           are not displayed.

       -md max_distance:
           The maximum distance (in pixels) that the algorithm will search out for values to
           interpolate.

       -si smooth_iterations:
           The number of 3x3 average filter smoothing iterations to run after the interpolation
           to dampen artifacts. The default is zero smoothing iterations.

       -o name=value:
           Specify a special argument to the algorithm. Currently none are supported.

       -b band:
           The band to operate on, by default the first band is operated on.

       srcfile
           The source raster file used to identify target pixels. Only one band is used.

       -nomask:
           Do not use the default validity mask for the input band (such as nodata, or alpha
           masks).

       -mask filename:
           Use the first band of the specified file as a validity mask (zero is invalid, non-zero
           is valid).

       dstfile
           The new file to create with the interpolated result. If not provided, the source band
           is updated in place.

       -of format:
           Select the output format. The default is GeoTIFF (GTiff). Use the short format name.

AUTHORS

       Frank Warmerdam warmerdam@pobox.com