[GRASSLIST:8843] Re: 3d blocks in GRASS NVIZ

[Nick Cahill]

I also have had no luck importing even the simplest 3d shapes from  
Microstation to GRASS. I didn't go through PostGIS, but used  
v.in.ogr, which reads Microstation DGN files directly. Even simple  
blocks were unpredictably located and sized. I had hoped to create  
more complex 3d shapes to display in NVIZ, but gave up and am looking  
for another solution. If this could be made to work in GRASS though  
it would be a boon.

Nick Cahill


On Nov 2, 2005, at 11:29 AM, Ing.Peter Misovic wrote:

> 3d blocks in GRASS NVIZ - continue :
>
> Dear all,
> we have problems with displaying 3D Volumes - blocks in GRASS. What we
> did until now ?
>
> a.) created 3D cubes in Bentley MicroStation
> b.) displayed those 3D cubes sucessfully in ArcVIEW
> c.) converted into PostGIS table by shp2postgis Postgres tool (please
> see created SQL file http://www.minegis.com/temp/blocks3D.sql) - there
> are different select statmens ...:(
> d.) displayed PostIGIS layer in QGIS as 2d - successfully
> e.) imported PostGIS layer into GRASS through v.in.ogr (please see
> import log http://www.minegis.com/temp/3dnviz_import_log.txt)
> f.) displayed layer in NVIZ - (please see screenshot -
> http://www.minegis.com/temp/3dnviz.png)
>
> We need just very simple database-objects visualization, but we are
> not really able to do that. Please see
> http://www.minegis.com/temp/cubes.jpg - we need a cubes in PostGIS
> database, import those cubes into GRASS (and also in mapserver) and
> provide thematic classification based on another atrribute table.
> Please, is someone here able to help us ? We' re really confused that
> we're not able to do that in last two weeks :((((
>
> Thank to everyone.
> Peter
>
>
>
>
>
> On 10/28/05, Ing.Peter Misovic <peter.misovic at gmail.com> wrote:
>
>> Hallo Stefania,
>> it sounds interesting. It seems that it's exactly what I need.  
>> What Am
>> I trying to do is (for sure) :
>>
>> I have cuboids (blocks) with known width, height and length and coord
>> of center - please see this picture
>> http://www.minegis.com/temp/cubes.jpg
>> a.) I'd like to have those cubes in PostGIS (or Postgres) database
>> b.) I'd like to display those cubes in NVIZ
>> c.) and the most of all I'd like to able to change colors of those
>> cubes in dependence on database table
>>
>> Please understand me. The major task I need is TO DISPLAY and CHANGE
>> colors based on some database table. It does not matter HOW are the
>> cubes generated - either from Postgis or Postgres, It does not matter
>> HOW are they stored in database - either like points or like 3D
>> volumes. If it is possible I preffer to store 3D volumes but ...as I
>> said, it does not matter.
>>
>> I hope it's posiible.
>>
>> Thank you for your time.
>>
>> Peter
>>
>>
>>
>> On 11/25/05, Stefania Merlo <sm399 at cam.ac.uk> wrote:
>>
>>> Dear Peter,
>>>
>>> could you be a bit more specific on the issue? I have been  
>>> working on 3D
>>> volume visualisations with the command v.to.rast3 where the  
>>> attribute
>>> located at a specific x,y,z position is exploded to a cube of given
>>> resolution. Does this sound what you are trying to do?
>>>
>>> Stefania
>>>
>>> --On Friday, October 28, 2005 12:46 +0200 "Ing.Peter Misovic"
>>> <peter.misovic at gmail.com> wrote:
>>>
>>>
>>>> Dear all,
>>>> I would like to ask you for help with creating 3D boxes based on
>>>> database layer. Does anybody has any experiences ?
>>>>
>>>>
>>>> Thank you.
>>>> Peter
>>>>
>>>>
>>>
>>>
>>>
>>> --------------------------
>>> Stefania Merlo
>>> Department of Archaeology
>>> University of Cambridge
>>> United Kingdom
>>> e-mail: sm399 at cam.ac.uk
>>>
>>> Office: +44 1223 763518
>>> Mobile: +44 787 6405064
>>> --------------------------
>>>
>>>
>>
>>
>
>