.TH "gdal_fillnodata" 1 "Sun Aug 11 2019" "GDAL" \" -*- nroff -*-
.ad l
.nh
.SH NAME
gdal_fillnodata \- Fill raster regions by interpolation from edges\&.
.SH "SYNOPSIS"
.PP
.PP
.nf
gdal_fillnodata.py [-q] [-md max_distance] [-si smooth_iterations]
                [-o name=value] [-b band]
                srcfile [-nomask] [-mask filename] [-of format] [dstfile]
.fi
.PP
.SH "DESCRIPTION"
.PP
The gdal_fillnodata\&.py script fills selection regions (usually nodata areas) by interpolating from valid pixels around the edges of the area\&.
.PP
Additional details on the algorithm are available in the GDALFillNodata() docs\&.
.PP
.IP "\fB\fB-q\fP:\fP" 1c
The script runs in quiet mode\&. The progress monitor is suppressed and routine messages are not displayed\&.
.PP
.IP "\fB\fB-md\fP \fImax_distance\fP:\fP" 1c
The maximum distance (in pixels) that the algorithm will search out for values to interpolate\&.
.PP
.IP "\fB\fB-si\fP \fIsmooth_iterations\fP:\fP" 1c
The number of 3x3 average filter smoothing iterations to run after the interpolation to dampen artifacts\&. The default is zero smoothing iterations\&.
.PP
.IP "\fB\fB-o\fP \fIname=value\fP:\fP" 1c
Specify a special argument to the algorithm\&. Currently none are supported\&. 
.PP
.IP "\fB\fB-b\fP \fIband\fP:\fP" 1c
The band to operate on, by default the first band is operated on\&. 
.PP
.IP "\fB\fIsrcfile\fP\fP" 1c
The source raster file used to identify target pixels\&. Only one band is used\&.
.PP
.IP "\fB\fB-nomask\fP:\fP" 1c
Do not use the default validity mask for the input band (such as nodata, or alpha masks)\&. 
.PP
.IP "\fB\fB-mask\fP \fIfilename\fP:\fP" 1c
Use the first band of the specified file as a validity mask (zero is invalid, non-zero is valid)\&. 
.PP
.IP "\fB\fIdstfile\fP\fP" 1c
The new file to create with the interpolated result\&. If not provided, the source band is updated in place\&.
.PP
.IP "\fB\fB-of\fP \fIformat\fP:\fP" 1c
Select the output format\&. The default is GeoTIFF (GTiff)\&. Use the short format name\&.
.PP
.PP
.SH "AUTHORS"
.PP
Frank Warmerdam warmerdam@pobox.com