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

[Francois Chartier]

Hourrah 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.
Now the work begins.

attached 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..).




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Le ven. 16 nov. 2018 à 23:20, Francois Chartier <fra.chartier at gmail.com> a
écrit :

> 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]
>
>
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>
> 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
>>
>
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