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.TH "GDAL_FILLNODATA" "1" "Mar 05, 2021" "" "GDAL"
.SH NAME
gdal_fillnodata \- Fill raster regions by interpolation from edges.
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.SH SYNOPSIS
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.nf
.ft C
gdal_fillnodata.py [\-q] [\-md max_distance] [\-si smooth_iterations]
                [\-o name=value] [\-b band]
                srcfile [\-nomask] [\-mask filename] [\-of format] [dstfile]
.ft P
.fi
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.SH DESCRIPTION
.sp
\fBgdal_fillnodata.py\fP script fills selection regions (usually
nodata areas) by interpolating from valid pixels around the edges of the area.
.sp
Additional details on the algorithm are available in the
\fBGDALFillNodata()\fP docs.
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.TP
.B \-q
The script runs in quiet mode. The progress monitor is suppressed and
routine messages are not displayed.
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.B \-md max_distance
The maximum distance (in pixels) that the algorithm will search out for
values to interpolate. The default is 100 pixels.
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.TP
.B \-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.
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.B \-o name=value
Specify a special argument to the algorithm. Currently none are supported.
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.TP
.B \-b band
The band to operate on, by default the first band is operated on.
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.TP
.B srcfile
The source raster file used to identify target pixels.
Only one band is used.
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.B \-nomask
Do not use the default validity mask for the input band (such as nodata,
or alpha masks).
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.B \-mask filename
Use the first band of the specified file as a validity mask (zero is
invalid, non\-zero is valid).
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.B dstfile
The new file to create with the interpolated result.
If not provided, the source band is updated in place.
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.B \-of format
Select the output format. The default is raster.gtiff\&.
Use the short format name.
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.SH AUTHOR
Frank Warmerdam <warmerdam@pobox.com>
.SH COPYRIGHT
1998-2021
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