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

[Francois Chartier]

Hi,

I am trying to use V.VOL.RST to interpolate particle size for soil
samples.   i obtain the error message to increase DMin. unfortunately i
have a data point every meter vertically and a total of 190K.  if grass is
asking to increase DMIN, which i have increased to 30 m to try to see if
this was the pb, can I resolve this by reducing the Segment size?

* COMMAND OUTPUT*
(Thu Nov 08 06:17:32 2018) Command finished (10 sec)

(Thu Nov 08 06:20:40 2018)

v.vol.rst input=geotechNov8 at Toronto wcolumn=dbl_2 npmin=50 npmax=200
dmin=30 elevation=Geotech3DNov8
188692 records selected from table
WARNING: Some points outside of region -- will ignore...
ERROR: Points are too concentrated -- please increase DMIN
(Thu Nov 08 06:20:51 2018) Command finished (10 sec)


*METADATA*
Thu Nov 08 06:11:32 2018) Command finished (0 sec)

(Thu Nov 08 06:19:17 2018)

v.info map=geotechNov8 at Toronto

 +----------------------------------------------------------------------------+
 | Name:            geotechNov8
   |
 | Mapset:          Toronto
   |
 | Location:        Toronto
   |
 | Database:        C:\Users\Francois Chartier\Documents\grassdata
  |
 | Title:
   |
 | Map scale:       1:1
   |
 | Name of creator: Francois Chartier
   |
 | Organization:
  |
 | Source date:     Thu Nov 08 06:06:56 2018
  |
 | Timestamp (first layer): none
  |
 |----------------------------------------------------------------------------|
 | Map format:      native
  |
 |----------------------------------------------------------------------------|
 |   Type of map: vector (level: 2)
   |
 |
  |
 |   Number of points:       188692          Number of centroids:  0
  |
 |   Number of lines:        0               Number of boundaries: 0
  |
 |   Number of areas:        0               Number of islands:    0
  |
 |   Number of faces:        0               Number of kernels:    0
  |
 |   Number of volumes:      0               Number of holes:      0
  |
 |
  |
 |   Map is 3D:              Yes
  |
 |   Number of dblinks:      1
  |
 |
  |
 |   Projection: UTM (zone 17)
  |
 |
  |
 |               N:           4870782    S:           4825713
   |
 |               E:            651697    W:            609201
   |
 |               B:                 0    T:               352
   |
 |
  |
 |   Digitization threshold: 0
  |
 |   Comment:
   |
 |
  |
 +----------------------------------------------------------------------------+
(Thu Nov 08 06:19:18 2018) Command finished (0 sec)
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