r.out.vrmlgrass - Online in the Cloud

PROGRAM:

NAME

r.out.vrml - Exports a raster map to the Virtual Reality Modeling Language (VRML).

KEYWORDS

raster, export, VRML

SYNOPSIS

r.out.vrml
r.out.vrml --help
r.out.vrml elevation=name [color=name] [exaggeration=float] output=name [--overwrite]
[--help] [--verbose] [--quiet] [--ui]

Flags:
--overwrite
Allow output files to overwrite existing files

--help
Print usage summary

--verbose
Verbose module output

--quiet
Quiet module output

--ui
Force launching GUI dialog

Parameters:
elevation=name [required]
Name of input elevation raster map

color=name
Name of input color map

exaggeration=float
Vertical exaggeration
Default: 1.0

output=name [required]
Name for output VRML file

DESCRIPTION

This module exports a GRASS raster map to the Virtual Reality Modeling Language (VRML)
format for 3D visualization.

This version only outputs raster maps in VRML 1.0 format. The newer VRML 2.0 format will
be more efficient for geographic applications, as it introduces an "ElevationGrid" node so
that only the elevation points will have to be written instead of the whole geometry. The
vast majority of VRML viewers currently only support VRML 1.0. If the extension "wrl"
(world) is not present in the he output parameter, it will be added.

WARNING

VRML is not well suited for large geometrys which can result from even a small geographic
region. Most viewers seem to bog down with more than 12,000 polygons, depending on your
hardware & specific viewer. Each grid cell results in two polygons, so a reasonable size
region would be something less than about 75x75. For improved performance and smaller
file size, leave off a color map. Since VRML is ascii text, gzip works very well to
significantly compress file size.

NOTE

This is a preliminary release of "r.out.vrml". For further information about VRML and
available viewers for various platforms, see:

VRML Virtual Reality Modeling Language

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