3D raster map (voxel) processing in GRASS
GRASS GIS is one of the few GIS with volume data support. Here data are stored as a 3D raster with a unit volume called a voxel (volume pixel). Voxels are designed to support for example representations of trivariate continuous fields.
Import or creating of volumes
You can import 3D ASCII raster data in GRASS voxel format using. You can also create a volume raster model based on 2D raster data by converting 2D raster slices into 3D raster or a 3D volume map based on 2D elevation and value raster maps.
See thefor more details.
Powerful 3D map algebra is implemented in.
A 3D groundwater flow model is implement in.
Cross-sections can be generated with.
Voxels can be interpolated from 3D point dat from.
Volume statistics can be calculated withand .
The GRASS and Paraview:viewer supports voxel visualization. As an alternative, you can use the external Paraview application, see