[GRASS-user] Error in v.vol.rst

[Manuel Seeger]

Hallo Frühaufsteher!

Here is the output of gregion -p3

projection: 1 (UTM)
zone:       30
datum:      wgs84
ellipsoid:  wgs84
north:      4681874.175
south:      4681826.55
west:       624764.175
east:       624839.625
top:        343.00000000
bottom:     337.00000000
nsres:      0.075
nsres3:     0.10005252
ewres:      0.075
ewres3:     0.10006631
tbres:      0.01
rows:       635
rows3:      476
cols:       1006
cols3:      754
depths:     600
cells:      638810
3dcells:    215342400

Thanks!

Manuel

Markus Neteler schrieb:
> Hallo Manuel,
>
> das war  g.region -p aber nicht  g.region -p3
>
> :)
>
> Markus
>
> On Mon, Jun 9, 2008 at 8:35 AM, Manuel Seeger <seeger at uni-trier.de> wrote:
>   
>> Hello Markus, hello Hamish, and List!
>>
>> I imported a transformed shapefile.
>> g.region -p gives:
>> projection: 1 (UTM)
>> zone:       30
>> datum:      wgs84
>> ellipsoid:  wgs84
>> north:      4681874.175
>> south:      4681826.55
>> west:       624764.175
>> east:       624839.625
>> nsres:      0.075
>> ewres:      0.075
>> rows:       635
>> cols:       1006
>> cells:      638810
>>
>> as it is a gully headcut, I have steep slopes (vertical!) and overhangs and
>> some shadowing...
>>
>> Thanks again!
>>
>> Manuel
>>
>>
>>
>>
>> Hamish schrieb:
>>     
>>> Manuel Seeger wrote:
>>>
>>>       
>>>> I trying to generate a 3d DEM of a gully headcut. The point
>>>> data was gained by terrestrial laser scanner.
>>>>
>>>>         
>>> what is the form of the raw data? x,y,z point cloud?
>>>
>>> is there only one x,y for each z, or are there overhangs?
>>>
>>> I ask because if there is only one z for each x,y then perhaps a 2.5D
>>> surface is more appropriate and the processing is much simpler:
>>>  http://grass.osgeo.org/wiki/Help_with_3D#Raster_2.5D_Surfaces
>>>
>>> that may obscure fine details of steep slopes though, lumping them all
>>> into one horizontal cell. Maybe the cell resolution would have to be very
>>> small.
>>> If that isn't good enough an idea, if you don't mind it, is to switch the
>>> z coordinate with x or y when you import and then look at the thing side on.
>>>
>>>
>>>
>>>       
>>>> As I am doing my first attempts, I do not change any
>>>> parameters from that given by default.
>>>>
>>>> This is the result:
>>>> v.vol.rst input=BAR1_SCAN_UTM at Georef41 wcolumn=dbl_3 tension=40.
>>>>  smooth=0.1 segmax=50 npmin=200 dmin=0.050026 wmult=1.0 zmult=1.0
>>>>  elev=Olite_3d --overwrite
>>>>
>>>> 1511728 records selected from table
>>>>
>>>> some points outside of region -- will ignore...
>>>>
>>>> strip exists with insufficient data
>>>>
>>>> Processing all selected output files will require 1435616
>>>> bytes of disk space for temp files
>>>>
>>>>
>>>> There are points outside specified 2D/3D region--ignored
>>>> 57754 points (total points: 1511728)
>>>>
>>>> Points are more dense than specified
>>>> 'DMIN'--ignored 1131669 points (remain 380059)
>>>> Percent complete:
>>>>
>>>> Error in COGRR!
>>>>
>>>> Interp_call failed!
>>>>
>>>> Can someone give me an idea if this is my fault?
>>>>
>>>>         
>>> No idea about that.
>>>
>>>
>>> Hamish
>>>
>>>
>>>
>>>
>>>
>>>
>>>       
>> --
>>
>> _______________________________________________________________________
>> Dr. Manuel Seeger
>> Wiss. Assistent                         Scientific Assistant
>> Physische Geographie                    Dpt. of Physical Geography
>> FB VI - Geographie/Geowissenschaften    Geography/Geosciences
>> Universität Trier                       University of Trier
>> D - 54286 Trier
>> Tel.:   +49-651-201 4557
>> Fax:    +49-651-201 3976
>> Web:    http://www-neu.uni-trier.de/index.php?id=9607
>>
>> _______________________________________________
>> grass-user mailing list
>> grass-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>
>>     
>
>
>
>   


-- 

_______________________________________________________________________
Dr. Manuel Seeger
Wiss. Assistent 			Scientific Assistant
Physische Geographie 			Dpt. of Physical Geography
FB VI - Geographie/Geowissenschaften 	Geography/Geosciences
Universität Trier			University of Trier
D - 54286 Trier
Tel.:	+49-651-201 4557
Fax:	+49-651-201 3976
Web:	http://www-neu.uni-trier.de/index.php?id=9607