 |
|
| |
GDAL-RASTER-UNSCALE(1) |
GDAL |
GDAL-RASTER-UNSCALE(1) |
gdal-raster-unscale - Convert scaled values of a raster dataset
into unscaled values
Added in version 3.11.
Usage: gdal raster unscale [OPTIONS] <INPUT> <OUTPUT>
Convert scaled values of a raster dataset into unscaled values.
Positional arguments:
-i, --input <INPUT> Input raster dataset [required]
-o, --output <OUTPUT> Output raster dataset [required]
Common Options:
-h, --help Display help message and exit
--json-usage Display usage as JSON document and exit
--config <KEY>=<VALUE> Configuration option [may be repeated]
--progress Display progress bar
Options:
-f, --of, --format, --output-format <OUTPUT-FORMAT> Output format ("GDALG" allowed)
--co, --creation-option <KEY>=<VALUE> Creation option [may be repeated]
--overwrite Whether overwriting existing output is allowed
--ot, --datatype, --output-data-type <OUTPUT-DATA-TYPE> Output data type. OUTPUT-DATA-TYPE=Byte|Int8|UInt16|Int16|UInt32|Int32|UInt64|Int64|CInt16|CInt32|Float16|Float32|Float64|CFloat32|CFloat64
Advanced Options:
--if, --input-format <INPUT-FORMAT> Input formats [may be repeated]
--oo, --open-option <KEY>=<VALUE> Open options [may be repeated]
gdal raster unscale applies the scale/offset metadata for
the bands to convert scaled values to unscaled values.
If the input band data type is Byte, Int8, UInt16, Int16, UInt32,
Int32, Int64, UInt64, Float16 or Float32, the default output data type will
be Float32. If the input band data type is Float64, it will be kept as the
default output data type. If the input band data type is CInt16, CFloat16 or
CFloat32, the default output data type will be Float32. If the input band
data type is CFloat64, it will be kept as the default output data type.
The unscaled value is computed from the scaled raw value with the
following formula:
{unscaled\_value} = {scaled\_value} * {scale} + {offset}
If one of the input bands has no scale/offset metadata, its values
are kept unmodified.
This command is the reverse operation of gdal raster
scale.
This subcommand is also available as a potential step of gdal
raster pipeline
- --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.
May be repeated.
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.
- --overwrite
- Allow program to overwrite existing target file or dataset. Otherwise, by
default, gdal errors out if the target file or dataset already
exists.
- --ot, --datatype,
--output-data-type <OUTPUT-DATA-TYPE>
- Output data type among Byte, Int8, UInt16,
Int16, UInt32, Int32, UInt64, Int64,
CInt16, CInt32, Float32, Float64,
CFloat32, CFloat64.
This program supports serializing the command line as a JSON file
using the GDALG output format. The resulting file can then be opened
as a raster dataset using the GDALG: GDAL Streamed Algorithm driver,
and apply the specified pipeline in a on-the-fly / streamed way.
$ gdal raster unscale scaled_byte.tif unscaled_float32.tif --overwrite
Even Rouault <even.rouault@spatialys.com>
Visit the GSP FreeBSD Man Page Interface. Output converted with ManDoc.
|