RMF --- Raster Matrix Format

There are two flavors of RMF called MTW and RSW. MTW supports 16-bit integer and 32/64-bit floating point data in a single channel and aimed to store DEM data. RSW is a general purpose raster. It supports single channel colormapped or three channel RGB images. Only 8-bit data can be stored in RSW. Simple georeferencing can be provided for both image types.

Metadata

• ELEVATION_MINIMUM: Minimum elevation value (MTW only).

• ELEVATION_MAXIMUM: Maximum elevation value (MTW only).

• ELEVATION_UNITS: Name of the units for raster values (MTW only). Can be "m" (meters), "cm" (centimeters), "dm" (decimeters), "mm" (millimeters).

• ELEVATION_TYPE: Could be either 0 (absolute elevation) or 1 (total elevation). MTW only.

Creation Options

• MTW=ON: Force the generation of MTW matrix (RSW will be created by default).

• BLOCKXSIZE=n: Sets tile width, defaults to 256.

• BLOCKYSIZE=n: Set tile height. Tile height defaults to 256.

• RMFHUGE=NO/YES/IF_SAFER: Creation of huge RMF file (Supported by GIS Panorama since v11). Defaults to NO.

• COMPRESS=NONE/LZW/JPEG/RMF_DEM: (From GDAL 2.4) Compression type. Defaults to NONE. Note: JPEG compression supported only with RGB (3-band) Byte datasets. RMF_DEM compression supported only with Int32 one channel MTW datasets.

• JPEG_QUALITY: (From GDAL 2.4) JPEG quality 1-100. Defaults to 75.

• NUM_THREADS=number_of_threads/ALL_CPUS: (From GDAL 2.4) Enable multi-threaded compression by specifying the number of worker threads. Default is compression in the main thread.

See Also:

• Implemented as gdal/frmts/rmf/rmfdataset.cpp.

• "Panorama" GIS homepage