[GRASS-user] v.vol.rst - DMIN and Segment Size

[Francois Chartier]

Finally.  I am was able to make v.vol.rst work.
How it worked.
I made the resolution to be 1 m in the 3 directions, x,y,z directions with
g.region.
I thought that perhaps due to the high density of points perhaps i needed
to increase the resolution.

Below I am viewing the data with Isosurface with the 3d viewer, under
View tab->3D raster, -> choose 3d raster -> add isosurface, define the
interval you want to see, and color set as constant (i used bgyr as the
color, but everything turns out blue..).

[image: image.png]

<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
Virus-free.
www.avast.com
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

Le jeu. 15 nov. 2018 à 03:44, Moritz Lennert <mlennert at club.worldonline.be>
a écrit :

> On 15/11/18 03:06, Francois Chartier wrote:
> > So i rerun v.vol.rst with new g.region -p3
> >
> > C:\>g.region -p3
> > projection: 1 (UTM)
> > zone:       17
> > datum:      nad83
> > ellipsoid:  grs80
> > north:      4862000
> > south:      4825700
> > west:       609200
> > east:       651700
> > top:        250.00000000
> > bottom:     50.00000000
> > nsres:      10
> > nsres3:     504.16666667
> > ewres:      10
> > ewres3:     500
> > tbres:      1
> > rows:       3630
> > rows3:      72
> > cols:       4250
> > cols3:      85
> > depths:     200
> > cells:      15427500
> > cells3:     1224000
> >
> > V.VOL.RST run (below) with increasing DMIN, from 0.5 to 200. finally
> > worked with 200 m of min spacing. as you can see the majority of the
> > points are excluded.
>
> I'm not familiar enough with the code of v.vol.rst, so I'll have to
> leave this to Helena and her team.
>
> Sorry,
> Moritz
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20181116/0ae4b464/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 847242 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20181116/0ae4b464/attachment-0001.png>