[GRASS-user] 3d vector cutting pane for 3d volumes ?

GRASS GRASS user
1

Hi,
is there a feasible approach in GRASS 6.X or 7.X to apply a 3d vector surface as a cutting pane to split 3D raster volume bodies ?

Best,
Peter

<peter.loewe@gmx.de>

2

On Mon, Oct 7, 2013 at 9:41 PM, "Peter Löwe" <peter.loewe@gmx.de> wrote:

Hi,
is there a feasible approach in GRASS 6.X or 7.X to apply a 3d vector surface as a cutting pane to split 3D raster volume bodies ?

Maybe by using
v.to.rast with use=z (use z coordinate), then followed by
r3.cross.rast (creates cross section 2D raster map from 3D raster map
based on 2D elevation map)

Best
Markus

3

Hi Peter,
you can use v.to.rast to create a raster surface from the vector
surface (as Maskus suggested) and then use r.to.rast3elev to fill the
upper volume and the lower volume of a new voxel map with different
values (upper = 1, lower = 2). Then use r3.mapcalc to perform
operations on the upper or lower volume (r3.mapcalc "lower_volume =
if(myvolume == 2, 1, null())").

Best regards
Soeren

2013/10/7 "Peter Löwe" <peter.loewe@gmx.de>:

Hi,
is there a feasible approach in GRASS 6.X or 7.X to apply a 3d vector surface as a cutting pane to split 3D raster volume bodies ?

Best,
Peter

<peter.loewe@gmx.de>
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