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gdal_contour
Langue: en
Version: 336789 (ubuntu - 24/10/10)
Section: 1 (Commandes utilisateur)
NAME
gdal_contour - .TH "gdal_contour" 1 "Wed Sep 29 2010" "GDAL"NAME
gdal_contour - builds vector contour lines from a raster elevation modelSYNOPSIS
Usage: gdal_contour [-b <band>] [-a <attribute_name>] [-3d] [-inodata] [-snodata n] [-f <formatname>] [-i <interval>] [-off <offset>] [-fl <level> <level>...] [-nln <outlayername>] <src_filename> <dst_filename>
DESCRIPTION
This program generates a vector contour file from the input raster elevation model (DEM).
- -b band:
- picks a particular band to get the DEM from. Defaults to band 1.
- -a name:
- provides a name for the attribute in which to put the elevation. If not provided no elevation attribute is attached.
- -3d:
- Force production of 3D vectors instead of 2D. Includes elevation at every vertex.
- -inodata:
- Ignore any nodata value implied in the dataset - treat all values as valid.
- -snodata value:
- Input pixel value to treat as 'nodata'.
- -f format:
- create output in a particular format, default is shapefiles.
- -i interval:
- elevation interval between contours.
- -off offset:
- Offset from zero relative to which to interpret intervals.
- -fl level:
- Name one or more 'fixed levels' to extract.
- -nln outlayername:
- Provide a name for the output vector layer. Defaults to 'contour'.
EXAMPLE
This would create 10meter contours from the DEM data in dem.tif and produce a shapefile in contour.shp/shx/dbf with the contour elevations in the 'elev' attribute.
gdal_contour -a elev dem.tif contour.shp -i 10.0
AUTHORS
Frank Warmerdam <warmerdam@pobox.com>, Silke Reimer <silke@intevation.de>
Contenus ©2006-2024 Benjamin Poulain
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