[GRASS-user] 3D unstructured Grid

[Saber Razmjooei]

The purpose of MDAL is slightly different from 3D meshes such as PLY. In 3D
mesh, you store just elevation (either face or corners) and some type of
materials. But in MDAL, the aim is to store quantities on top of the mesh
(e.g. a mesh for ground elevation and water depth on top over a period of
time). So in essence, it is more like 2.5D  (+time).

Cheers
Saber

On Tue, 2 Oct 2018 at 13:40, Carlos Henrique Grohmann de Carvalho <
carlos.grohmann at gmail.com> wrote:

> That seems very interesting! Any plans to support PLY?
>
> Carlos
>
> On Tue, Oct 2, 2018 at 9:32 AM, Saber Razmjooei <
> saber.razmjooei at lutraconsulting.co.uk> wrote:
>
>> Hi,
>>
>> Sorry to hijack the discussion related to GRASS. But, we are working a
>> new library to handle mesh data. MDAL is currently supported in QGIS. But
>> the idea is to make it generic so other OS GIS application can handle the
>> mesh layer through a generic library similar to GDAL. Here is more info
>> about MDAL:
>> https://lutraconsulting.github.io/mdal-web/
>>
>> You can find some example of the formats supported there too.
>>
>> Regards
>> Saber
>>
>>
>> On Tue, 2 Oct 2018 at 03:01, Vaclav Petras <wenzeslaus at gmail.com> wrote:
>>
>>> On Sat, Sep 29, 2018 at 4:45 PM Francois Chartier <
>>> fra.chartier at gmail.com> wrote:
>>>
>>>> Can Grass GIS create a 3D unstructured grid based on a 3D point data
>>>> set ?
>>>>
>>>
>>> All data and visualizations at the following website were created in
>>> GRASS GIS including a 3D regular grid (3D raster in GRASS GIS) interpolated
>>> from a set of 3D points (vector which is 3D, i.e. with z, in GRASS GIS).
>>> Points were soil properties measurement at different depths, 3D raster is
>>> then continuous representation of a selected property.
>>>
>>> https://geospatial.ncsu.edu/geoforall/multidim-geovis.html
>>>
>>> Module used for interpolation was v.vol.rst:
>>>
>>> https://grass.osgeo.org/grass74/manuals/v.vol.rst.html
>>>
>>> Vaclav
>>> _______________________________________________
>>> grass-user mailing list
>>> grass-user at lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/grass-user
>>
>>
>>
>> --
>> Saber Razmjooei
>> www.lutraconsulting.co.uk
>> +44 (0)7568 129733
>>
>> _______________________________________________
>> grass-user mailing list
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>>
>
>
>
> --
> Prof. Carlos Henrique Grohmann
> Institute of Energy and Environment - Univ. of São Paulo, Brazil
> - Digital Terrain Analysis | GIS | Remote Sensing -
>
> http://carlosgrohmann.com
> http://orcid.org/0000-0001-5073-5572
> ________________
> Can’t stop the signal.
>


-- 
Saber Razmjooei
www.lutraconsulting.co.uk
+44 (0)7568 129733
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