「Gdal contour」の版間の差分

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(ページの作成: builds vector contour lines from a raster elevation model === 概要 (SYNOPSIS) === <pre> Usage: gdal_contour [-b <band>] [-a <attribute_name>] [-3d] [-inodata] …)
 
 
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'''-b band'':
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'''-b band''':
  
    picks a particular band to get the DEM from. Defaults to band 1.
+
picks a particular band to get the DEM from. Defaults to band 1.
  
'''-a name'':
+
'''-a name''':
  
    provides a name for the attribute in which to put the elevation. If not provided no elevation attribute is attached.  
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provides a name for the attribute in which to put the elevation. If not provided no elevation attribute is attached.  
  
'''-3d'':
+
'''-3d''':
  
    Force production of 3D vectors instead of 2D. Includes elevation at every vertex.
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Force production of 3D vectors instead of 2D. Includes elevation at every vertex.
  
'''-inodata'':
+
'''-inodata''':
  
    Ignore any nodata value implied in the dataset - treat all values as valid.
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Ignore any nodata value implied in the dataset - treat all values as valid.
  
'''-snodata value'':
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'''-snodata''' '' value'':
  
    Input pixel value to treat as "nodata".
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Input pixel value to treat as "nodata".
  
'''-f format'':
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'''-f''' '' format'':
  
    create output in a particular format, default is shapefiles.
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create output in a particular format, default is shapefiles.
  
'''-i interval'':
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'''-i''' ''interval'':
  
    elevation interval between contours.
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elevation interval between contours.
  
'''-off offset'':
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'''-off''' ''offset'':
  
    Offset from zero relative to which to interpret intervals.
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Offset from zero relative to which to interpret intervals.
  
'''-fl level'':
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'''-fl''' ''level'':
  
    Name one or more "fixed levels" to extract.  
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Name one or more "fixed levels" to extract.  
  
'''-nln outlayername'':
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'''-nln''' ''outlayername'':
  
    Provide a name for the output vector layer. Defaults to "contour".  
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Provide a name for the output vector layer. Defaults to "contour".  
  
  

2011年11月29日 (火) 17:21時点における最新版

builds vector contour lines from a raster elevation model

概要 (SYNOPSIS)

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> 

解説 (DESCRIPTION)

This program generates a vector contour file from the input raster elevation model (DEM).

Starting from version 1.7 the contour line-strings will be oriented consistently. The high side will be on the right, i.e. a line string goes clockwise around a top.


-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