<div dir="ltr"><div dir="ltr"><div>good point. i created the 3d raster before. see g.region -p3 below. </div><div>I will rerun v.vol.rst with the higher 3d g.region resolution, and keep increasing the dmin until it runs.</div><div><br></div><div>C:\>g.region -p3</div><div>projection: 1 (UTM)</div><div>zone: 17</div><div>datum: nad83</div><div>ellipsoid: grs80</div><div>north: 4862000</div><div>south: 4825700</div><div>west: 609200</div><div>east: 651700</div><div>top: 250.00000000</div><div>bottom: 50.00000000</div><div>nsres: 10</div><div>nsres3: 504.16666667</div><div>ewres: 10</div><div>ewres3: 500</div><div>tbres: 1</div><div>rows: 3630</div><div>rows3: 72</div><div>cols: 4250</div><div>cols3: 85</div><div>depths: 200</div><div>cells: 15427500</div><div>cells3: 1224000</div></div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
<table style="border-top:1px solid #d3d4de">
<tr>
<td style="width:55px;padding-top:13px"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><img src="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;"></a></td>
<td style="width:470px;padding-top:12px;color:#41424e;font-size:13px;font-family:Arial,Helvetica,sans-serif;line-height:18px">Virus-free. <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank" style="color:#4453ea">www.avast.com</a>
</td>
</tr>
</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a></div><br><div class="gmail_quote"><div dir="ltr">Le mer. 14 nov. 2018 à 09:38, Moritz Lennert <<a href="mailto:mlennert@club.worldonline.be">mlennert@club.worldonline.be</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 14/11/18 01:28, Francois Chartier wrote:<br>
> Hi,<br>
> <br>
> v.vol.rst starts working when npmin is 100 m or more. I dont believe <br>
> that this algorythm only works with data points spaced by 100 m that <br>
> does not make sense. is there a max total number for a dataset? is it <br>
> because i have too few rows and columns?<br>
> see metadata below. i also showed a lower dmin of 0.9. g.region is <br>
> printed at the end of the email<br>
<br>
<br>
Your g.region output does not correspond to the region that was set when <br>
you ran v.vol.rst as the map created has a resolution of 500 in x and y <br>
direction, but your region says 10.<br>
<br>
Could you provide the output of g.region -p3 to also get the 3D settings ?<br>
<br>
I don't have an exact idea, but the map you created has a resolution of <br>
500 x 500 x 176, so maybe if you have a point per meter this just means <br>
that the number of points you have per target pixel is much too high.<br>
<br>
Maybe you need to think about the appropriate 3D region first and make <br>
sure to set that before running v.vol.rst ?<br>
<br>
Moritz<br>
<br>
> <br>
> <br>
> +----------------------------------------------------------------------------+<br>
> |<br>
> |----------------------------------------------------------------------------|<br>
> | <br>
> |<br>
> | Type of Map: raster_3d Number of Categories: 0 <br>
> |<br>
> | Data Type: FCELL <br>
> |<br>
> | Rows: 90 <br>
> |<br>
> | Columns: 85 <br>
> |<br>
> | Depths: 2 <br>
> |<br>
> | Total Cells: 15300 <br>
> |<br>
> | Total size: 48229 Bytes <br>
> |<br>
> | Number of tiles: 4 <br>
> |<br>
> | Mean tile size: 12057 Bytes <br>
> |<br>
> | Tile size in memory: 15480 Bytes <br>
> |<br>
> | Number of tiles in x, y and z: 2, 2, 1 <br>
> |<br>
> | Dimension of a tile in x, y, z: 43, 45, 2 <br>
> |<br>
> | <br>
> |<br>
> | Projection: UTM (zone 17) <br>
> |<br>
> | N: 4870782 S: 4825713 Res: 500.76666667 <br>
> |<br>
> | E: 651697 W: 609201 Res: 499.95294118 <br>
> |<br>
> | T: 352 B: 0 Res: 176 <br>
> |<br>
> | Range of data: min = -1.17721057 max = 89.22615051 <br>
> |<br>
> | <br>
> |<br>
> | Data Source: <br>
> |<br>
> | <br>
> |<br>
> | <br>
> |<br>
> | <br>
> |<br>
> | Data Description: <br>
> |<br>
> | generated by v.vol.rst <br>
> |<br>
> | <br>
> |<br>
> | Comments: <br>
> |<br>
> | v.vol.rst --overwrite input="geotechNov8@Toronto" wcolumn="dbl_2" <br>
> te\ |<br>
> | nsion=40. smooth=0.1 segmax=50 npmin=200 npmax=700 dmin=100 <br>
> wscale=1\ |<br>
> | .0 zscale=1.0 elevation="geotechnov8" <br>
> |<br>
> | <br>
> |<br>
> +----------------------------------------------------------------------------+<br>
> (Tue Nov 13 19:18:12 2018) Command finished (0 sec)<br>
> <br>
> *i have also tried with low dmin of 0.9 m:*<br>
> <br>
> <br>
> (Tue Nov 13 19:22:49 2018)<br>
> v.vol.rst --overwrite input=geotechNov8@Toronto wcolumn=dbl_2 npmin=60 <br>
> npmax=100 dmin=0.9 elevation=geotechnov13<br>
> 188692 records selected from table<br>
> WARNING: Some points outside of region -- will ignore...<br>
> ERROR: Points are too concentrated -- please increase DMIN<br>
> (Tue Nov 13 19:23:00 2018) Command finished (10 sec)<br>
> <br>
> METADATA of Vector points<br>
> <br>
> Thu Nov 08 06:06:56 2018 |<br>
> | Timestamp (first layer): none <br>
> |<br>
> |----------------------------------------------------------------------------|<br>
> | Map format: native <br>
> |<br>
> |----------------------------------------------------------------------------|<br>
> | Type of map: vector (level: 2) <br>
> |<br>
> | <br>
> |<br>
> | Number of points: 188692 Number of centroids: 0 <br>
> |<br>
> | Number of lines: 0 Number of boundaries: 0 <br>
> |<br>
> | Number of areas: 0 Number of islands: 0 <br>
> |<br>
> | Number of faces: 0 Number of kernels: 0 <br>
> |<br>
> | Number of volumes: 0 Number of holes: 0 <br>
> |<br>
> | <br>
> |<br>
> | Map is 3D: Yes <br>
> |<br>
> | Number of dblinks: 1 <br>
> |<br>
> | <br>
> |<br>
> | Projection: UTM (zone 17) <br>
> |<br>
> | <br>
> |<br>
> | N: 4870782 S: 4825713 <br>
> |<br>
> | E: 651697 W: 609201 <br>
> |<br>
> | B: 0 T: 352 <br>
> |<br>
> | <br>
> |<br>
> | Digitization threshold: 0 <br>
> |<br>
> | Comment: <br>
> |<br>
> | <br>
> |<br>
> +----------------------------------------------------------------------------+<br>
> (Tue Nov 13 19:25:30 2018) Command finished (0 sec)<br>
> <br>
> g.region - p<br>
> <br>
> projection: 1 (UTM)<br>
> zone: 17<br>
> datum: nad83<br>
> ellipsoid: grs80<br>
> north: 4862000<br>
> south: 4825700<br>
> west: 609200<br>
> east: 651700<br>
> nsres: 10<br>
> ewres: 10<br>
> rows: 3630<br>
> cols: 4250<br>
> cells: 15427500<br>
> <br>
> Le ven. 9 nov. 2018 à 07:16, Francois Chartier <<a href="mailto:fra.chartier@gmail.com" target="_blank">fra.chartier@gmail.com</a> <br>
> <mailto:<a href="mailto:fra.chartier@gmail.com" target="_blank">fra.chartier@gmail.com</a>>> a écrit :<br>
> <br>
> does anybody know how to resolve this?<br>
> <br>
> On Thu, Nov 8, 2018, 06:23 Francois Chartier <<a href="mailto:fra.chartier@gmail.com" target="_blank">fra.chartier@gmail.com</a><br>
> <mailto:<a href="mailto:fra.chartier@gmail.com" target="_blank">fra.chartier@gmail.com</a>> wrote:<br>
> <br>
> Hi,<br>
> <br>
> I am trying to use V.VOL.RST to interpolate particle size for<br>
> soil samples. i obtain the error message to increase DMin.<br>
> unfortunately i have a data point every meter vertically and a<br>
> total of 190K. if grass is asking to increase DMIN, which i<br>
> have increased to 30 m to try to see if this was the pb, can I<br>
> resolve this by reducing the Segment size?<br>
> <br>
> * COMMAND OUTPUT*<br>
> (Thu Nov 08 06:17:32 2018) Command finished (10 sec)<br>
> (Thu Nov 08 06:20:40 2018)<br>
> v.vol.rst input=geotechNov8@Toronto wcolumn=dbl_2 npmin=50<br>
> npmax=200 dmin=30 elevation=Geotech3DNov8<br>
> 188692 records selected from table<br>
> WARNING: Some points outside of region -- will ignore...<br>
> ERROR: Points are too concentrated -- please increase DMIN<br>
> (Thu Nov 08 06:20:51 2018) Command finished (10 sec)<br>
> <br>
> *METADATA*<br>
> Thu Nov 08 06:11:32 2018) Command finished (0 sec)<br>
> (Thu Nov 08 06:19:17 2018)<br>
> <a href="http://v.info" rel="noreferrer" target="_blank">v.info</a> <<a href="http://v.info" rel="noreferrer" target="_blank">http://v.info</a>> map=geotechNov8@Toronto<br>
> +----------------------------------------------------------------------------+<br>
> | Name: geotechNov8 <br>
> |<br>
> | Mapset: Toronto <br>
> |<br>
> | Location: Toronto <br>
> |<br>
> | Database: C:\Users\Francois<br>
> Chartier\Documents\grassdata |<br>
> | Title: <br>
> |<br>
> | Map scale: 1:1 <br>
> |<br>
> | Name of creator: Francois Chartier <br>
> |<br>
> | Organization: <br>
> |<br>
> | Source date: Thu Nov 08 06:06:56 2018 <br>
> |<br>
> | Timestamp (first layer): none <br>
> |<br>
> |----------------------------------------------------------------------------|<br>
> | Map format: native <br>
> |<br>
> |----------------------------------------------------------------------------|<br>
> | Type of map: vector (level: 2) <br>
> |<br>
> | <br>
> |<br>
> | Number of points: 188692 Number of<br>
> centroids: 0 |<br>
> | Number of lines: 0 Number of<br>
> boundaries: 0 |<br>
> | Number of areas: 0 Number of<br>
> islands: 0 |<br>
> | Number of faces: 0 Number of<br>
> kernels: 0 |<br>
> | Number of volumes: 0 Number of holes: <br>
> 0 |<br>
> | <br>
> |<br>
> | Map is 3D: Yes <br>
> |<br>
> | Number of dblinks: 1 <br>
> |<br>
> | <br>
> |<br>
> | Projection: UTM (zone 17) <br>
> |<br>
> | <br>
> |<br>
> | N: 4870782 S: 4825713 <br>
> |<br>
> | E: 651697 W: 609201 <br>
> |<br>
> | B: 0 T: 352 <br>
> |<br>
> | <br>
> |<br>
> | Digitization threshold: 0 <br>
> |<br>
> | Comment: <br>
> |<br>
> | <br>
> |<br>
> +----------------------------------------------------------------------------+<br>
> (Thu Nov 08 06:19:18 2018) Command finished (0 sec)<br>
> <br>
> <br>
> N �n�r����)em�h�yhiם�w^���<br>
> <br>
<br>
<br>
</blockquote></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
<table style="border-top:1px solid #d3d4de">
<tr>
<td style="width:55px;padding-top:13px"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><img src="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;"></a></td>
<td style="width:470px;padding-top:12px;color:#41424e;font-size:13px;font-family:Arial,Helvetica,sans-serif;line-height:18px">Virus-free. <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank" style="color:#4453ea">www.avast.com</a>
</td>
</tr>
</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a></div>