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v.extrude

NAME

v.extrude

DESCRIPTION

v.extrude makes 3D blocks or just walls from 2D polygons or lines.

Selected Flags and Parameters

-t

If defined, roof and walls will follow ("trace") the elevation by using individual elevation values for the vertices and nodes at bottom. This should be useful for models of large objects (forest stands).

zshift

Vertical shift of vector data on top of values extracted from elevation model/defined fixed height.

elevation
Raster elevation map to put on the vector 3D objects.
height
Global height of vector 3D objects. If not specified, the module

expects the hcolumn parameter.

hcolumn
Column from attribute table, in which the attribute of object

height is stored (must be of int, double, or varchar type).

EXAMPLES

3D houses with fixed height
v.extrude input=houses output=houses3D height=5

3D houses with individual height
v.extrude -t input=houses output=houses3D elevation=dem hcolumn=height

AUTHOR

Jachym Cepicky, jachym.cepicky _at_ centrum _dot_ cz, http://les-ejk.cz
Department of Geoinformation Technologies, http://mapserver.mendelu.cz

Last changed: $Date: 2006/01/02 14:44:51 $

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