NAME

       gdal_retile - Retiles a set of tiles and/or build tiled pyramid levels.

SYNOPSIS

          gdal_retile.py [--help] [--help-general]
                         [-v] [-co <NAME>=<VALUE>]... [-of <out_format>] [-ps <pixelWidth> <pixelHeight>]
                         [-overlap <val_in_pixel>]
                         [-ot  {Byte/Int8/Int16/UInt16/UInt32/Int32/Float32/Float64/
                                 CInt16/CInt32/CFloat32/CFloat64}]'
                         [ -tileIndex <tileIndexName> [-tileIndexField <tileIndexFieldName>]]
                         [-csv <fileName> [-csvDelim <delimiter>]]
                         [-s_srs <srs_def>]  [-pyramidOnly]
                         [-r {near|bilinear|cubic|cubicspline|lanczos}]
                         -levels <numberoflevels>
                         [-useDirForEachRow] [-resume]
                         -targetDir <TileDirectory> <input_file> <input_file>...

DESCRIPTION

       This  utility will retile a set of input tile(s). All the input tile(s) must be georeferenced in the same
       coordinate system and have a matching number of bands.

       Optionally pyramid levels are generated. All pyramid levels are generated from the input tiles (not  from
       previous levels).

       It is possible to generate shape file(s) for the tiled output.

       If your number of input tiles exhausts the command line buffer, use the general --optfile option

       --help Show this help message and exit

       --help-general
              Gives a brief usage message for the generic GDAL commandline options and exit.

       -targetDir <directory>
              The  directory where the tile result is created. Pyramids are stored in  sub-directories  numbered
              from  1. Created tile names have a numbering schema and contain the name of the source tiles(s)

       -of <format>
              Select the output format. Starting with GDAL 2.3, if not specified, the format is guessed from the
              extension (previously was GTiff). Use the short format name.

       -co <NAME>=<VALUE>
              Many formats have one or more optional creation options that can be used  to  control  particulars
              about  the  file  created.  For  instance, the GeoTIFF driver supports creation options to control
              compression, and whether the file should be tiled.

              The creation options available vary by format driver, and some simple  formats  have  no  creation
              options  at all. A list of options supported for a format can be listed with the --formats command
              line option but the documentation for the format is the definitive source of information on driver
              creation options.  See Raster drivers format specific documentation for legal creation options for
              each format.

       -ot <type>
              Force the output image bands to have a specific data type supported by the driver,  which  may  be
              one  of  the following: Byte, Int8, UInt16, Int16, UInt32, Int32, UInt64, Int64, Float32, Float64,
              CInt16, CInt32, CFloat32 or CFloat64.

       -ps <pixelsize_x> <pixelsize_y>
              Pixel size to be used for the output file.  If not specified, 256 x 256 is the default

       -overlap <val_in_pixel>
              Overlap in pixels between consecutive tiles. If not specified, 0 is the default

              New in version 2.2.

       -levels <numberOfLevels>
              Number of pyramids levels to build.

       -v     Generate verbose output of tile operations as they are done.

       -pyramidOnly
              No retiling, build only the pyramids

       -r <algorithm>
              Resampling algorithm, default is near

       -s_srs <srs_def>
              Source spatial reference to use. The coordinate systems   that   can   be  passed   are   anything
              supported  by  the  OGRSpatialReference.SetFromUserInput()   call, which  includes  EPSG, PCS, and
              GCSes (i.e. EPSG:4296), PROJ.4 declarations (as above), or the name of a .prj file containing well
              known text.  If  no  srs_def  is  given,  the srs_def  of the source tiles is used  (if  there  is
              any).   The srs_def will be propagated to created tiles (if possible) and  to  the  optional shape
              file(s)

       -tileIndex <tileIndexName>
              The name of shape file containing the result tile(s) index

       -tileIndexField <tileIndexFieldName>
              The name of the attribute containing the tile name

       -csv <csvFileName>
              The name of the csv file containing the tile(s) georeferencing information.  The file  contains  5
              columns: tilename,minx,maxx,miny,maxy

       -csvDelim <column delimiter>
              The column delimiter used in the CSV file, default value is a semicolon ";"

       -useDirForEachRow
              Normally  the  tiles  of  the base image are stored as described in -targetDir.  For large images,
              some file systems have performance problems if the number of files in  a  directory  is  too  big,
              causing  gdal_retile  not  to finish in reasonable time.  Using this parameter creates a different
              output structure. The tiles of the base image are stored in a sub-directory called 0, the pyramids
              in  sub-directories  numbered  1,2,....   Within  each  of  these  directories  another  level  of
              sub-directories  is  created,  numbered from 0...n, depending of how many tile rows are needed for
              each level. Finally, a directory contains only the tiles for one row for  a  specific  level.  For
              large images a performance improvement of a factor N could be achieved.

       -resume
              Resume mode. Generate only missing files.

       NOTE:
          gdal_retile.py is a Python script, and will only work if GDAL was built with Python support.

AUTHOR

       Christian Mueller <christian.mueller@nvoe.at>

COPYRIGHT

       1998-2024

                                                  Feb 08, 2024                                    GDAL_RETILE(1)