gdal2xyz

Translates a raster file into xyz format.

Synopsis

gdal2xyz [--help] [--help-general]
    [-skip <factor>]
    [-srcwin <xoff> <yoff> <xsize> <ysize>]
    [-b <band>]... [-allbands]
    [-skipnodata]
    [-csv]
    [-srcnodata <value>] [-dstnodata <value>]
    <src_dataset> <dst_dataset>

Description

The gdal2xyz utility can be used to translate a raster file into xyz format. gdal2xyz can be used as an alternative to gdal_translate of=xyz. Features include:

Select more then one band

Skip or replace nodata value

Return the output as numpy arrays.

Note

gdal2xyz is a Python utility, and is only available if GDAL Python bindings are available.

--help: Show this help message and exit

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

-skip: How many rows/cols to skip in each iteration.

-srcwin <xoff> <yoff> <xsize> <ysize>: Selects a subwindow from the source image for copying based on pixel/line location.

-b, -band <band>: Select band band from the input spectral bands for output. Bands are numbered from 1 in the order spectral bands are specified. Multiple -b switches may be used. When no -b switch is used, the first band will be used. In order to use all input bands set -allbands or -b 0.

-allbands: Select all input bands.

-csv: Use comma instead of space as a delimiter.

-skipnodata: Exclude the output lines with nodata value (as determined by srcnodata)

-srcnodata: The nodata value of the dataset (for skipping or replacing) Default (None) - Use the dataset nodata value; Sequence/Number - Use the given nodata value (per band or per dataset).

-dstnodata: Replace source nodata with a given nodata. Has an effect only if not setting -skipnodata. Default(None) - Use srcnodata, no replacement; Sequence/Number - Replace the srcnodata with the given nodata value (per band or per dataset).

-h, --help: Show help message and exit.

<src_dataset>: The source dataset name. It can be either file name, URL of data source or subdataset name for multi-dataset files.

<dst_dataset>: The destination file name.

Examples

gdal2xyz -b 1 -b 2 -dstnodata 0 input.tif output.txt

To create a text file in xyz format from the input file input.tif. The first columns, x and y, are the coordinates of the centers of each cell. The remaining columns represent the first and second bands. We also replace the dataset nodata values with zeros.

Caveats

gdal2xyz output values with a limited precision. Use gdal_translate -of XYZ if more precision is desired.