Port gdal_fillnodata.py documentation page to reST

gdal/doc/source/programs/gdal_fillnodata.rst

@@ -1,7 +1,77 @@
 .. _gdal_fillnodata:
 
 ================================================================================
-gdal_fillnodata (TODO)
+gdal_fillnodata
 ================================================================================
 
-TODO
+.. only:: html
+
+    Fill raster regions by interpolation from edges.
+
+.. Index:: gdal_fillnodata
+
+Synopsis
+--------
+
+.. code-block::
+
+    gdal_fillnodata.py [-q] [-md max_distance] [-si smooth_iterations]
+                    [-o name=value] [-b band]
+                    srcfile [-nomask] [-mask filename] [-of format] [dstfile]
+
+Description
+-----------
+
+:program:`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
+:c:func:`GDALFillNodata` docs.
+
+.. option:: -q
+
+    The script runs in quiet mode. The progress monitor is suppressed and
+    routine messages are not displayed.
+
+.. option:: -md max_distance
+
+    The maximum distance (in pixels) that the algorithm will search out for
+    values to interpolate.
+
+.. option:: -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.
+
+.. option:: -o name=value
+
+    Specify a special argument to the algorithm. Currently none are supported.
+
+.. option:: -b band
+
+    The band to operate on, by default the first band is operated on.
+
+.. option:: srcfile
+
+    The source raster file used to identify target pixels.
+    Only one band is used.
+
+.. option:: -nomask
+
+    Do not use the default validity mask for the input band (such as nodata,
+    or alpha masks).
+
+.. option:: -mask filename
+
+    Use the first band of the specified file as a validity mask (zero is
+    invalid, non-zero is valid).
+
+.. option:: dstfile
+
+    The new file to create with the interpolated result.
+    If not provided, the source band is updated in place.
+
+.. option:: -of format
+
+    Select the output format. The default is :ref:`raster.gtiff`.
+    Use the short format name.