Re: [Qgis-developer] QGIS and 3D

[gene]

And for 3D geology, you have also the  qProf
plugin  of  Mauro Alberti and
Marco Zanieri  which use also matplotlib (for topographic profile and
geological cross section)



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Re: [Qgis-developer] QGIS and 3D

[gene]

Among others:

 In French:

-  PyQGIS (QGIS 2): les coupes géologiques (colorisation d'un profil
topographique élaboré à partir d'un MNT en fonction des couleurs d'un raster
et placement des points d'intersection avec les limites des couches
géologiques)

  
(PyQGIS (QGIS 2) geological cross-sections ("colorization" of a topographic
profile with the colors of a geological map and placement of the points of
intersection with the boundaries of geological layers)).

In Spanish:

-  QGIS, visualización 3D de capas vectoriales con Python

  

but also in this list, for example:

-  visualizing 3D data (Z values) or data with z attribute: a solution

  
-  For geologists: 3D geological boreholes

  

and in GIS Stack Exchange, for example:

-  TIN Interpolation using a vector layer

  
-  Create cross section with polygon intersects in QGIS

  

- with only Python:

-  Display a georeferenced DEM surface in 3D matplotlib

  




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Re: [Qgis-developer] QGIS and 3D

[G. Allegri]

Shouldn't we create e wiki page about QGIS and 3D? We could gather these
links there.

giovann


2014-01-27 gene 

> Among others:
>
>  In French:
>
> -  PyQGIS (QGIS 2): les coupes géologiques (colorisation d'un profil
> topographique élaboré à partir d'un MNT en fonction des couleurs d'un
> raster
> et placement des points d'intersection avec les limites des couches
> géologiques)
> <
> http://www.portailsig.org/content/pyqgis-qgis-2-les-coupes-geologiques-colorisation-d-un-profil-topographique-elabore-partir-d
> >
> (PyQGIS (QGIS 2) geological cross-sections ("colorization" of a topographic
> profile with the colors of a geological map and placement of the points of
> intersection with the boundaries of geological layers)).
>
> In Spanish:
>
> -  QGIS, visualización 3D de capas vectoriales con Python
> <
> http://geotux.tuxfamily.org/index.php/en/geo-blogs/item/315-qgis-visualizacion-3d-de-capas-vectoriales-con-python
> >
>
> but also in this list, for example:
>
> -  visualizing 3D data (Z values) or data with z attribute: a solution
> <
> http://osgeo-org.1560.x6.nabble.com/visualizing-3D-data-Z-values-or-data-with-z-attribute-a-solution-td5005360.html
> >
> -  For geologists: 3D geological boreholes
> <
> http://osgeo-org.1560.x6.nabble.com/For-geologists-3D-geological-boreholes-td5007085.html
> >
>
> and in GIS Stack Exchange, for example:
>
> -  TIN Interpolation using a vector layer
> <
> http://gis.stackexchange.com/questions/41891/tin-interpolation-using-a-vector-layer/41922#41922
> >
> -  Create cross section with polygon intersects in QGIS
> <
> http://gis.stackexchange.com/questions/83605/create-cross-section-with-polygon-intersects-in-qgis/83619#83619
> >
>
> - with only Python:
>
> -  Display a georeferenced DEM surface in 3D matplotlib
> <
> http://gis.stackexchange.com/questions/66367/display-a-georeferenced-dem-surface-in-3d-matplotlib/66440#66440
> >
>
>
>
>
> --
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GEO+ geomatica in Italia http://bit.ly/GEOplus
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Re: [Qgis-developer] QGIS and 3D

[Etienne Tourigny]

I guess you are referring to this (French) tutorial?

http://www.portailsig.org/content/qgis-representation-3d-des-couches-vectorielles-shapefiles-dits-3d-ou-shapefiles-avec-attrib


On Mon, Jan 27, 2014 at 2:20 PM, gene  wrote:

> The solution in Python reported  uses matplotlib/mplot3d, Visvis  and even
> mayavi   .
>
>
>
>
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Re: [Qgis-developer] QGIS and 3D

[gene]

The solution in Python reported  uses matplotlib/mplot3d, Visvis  and even 
mayavi   .




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Re: [Qgis-developer] QGIS and 3D

[Etienne Tourigny]

How about using matplotlib's mplot3d ? There are already a number of
plugins using matplotlib.

http://matplotlib.org/mpl_toolkits/mplot3d/tutorial.html


On Sat, Jan 25, 2014 at 9:30 AM, G. Allegri  wrote:

> Thanks for remembering us of it. I couldn't retrieve it from the ML!
> Visvis seems a good approach to the visualization of 3D data in QGIS. I
> imagine it won't be as performant as native implementations (like osg, used
> by Horao) but it would be probably more portable and easy to mantain...
>
> giovanni
>
>
> 2014/1/25 gene 
>
>> You can also use Python in the Python console, look at  Using/visualizing
>> 3D
>> data (Z values)
>> <
>> http://osgeo-org.1560.x6.nabble.com/Using-visualizing-3D-data-Z-values-td4126375.html#a5009086
>> >
>>
>>
>>
>> --
>> View this message in context:
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>
>
>
> --
> Giovanni Allegri
> http://about.me/giovanniallegri
> blog: http://blog.spaziogis.it
> GEO+ geomatica in Italia http://bit.ly/GEOplus
>
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Re: [Qgis-developer] QGIS and 3D

[giulianc51]

Il giorno Sat, 25 Jan 2014 00:52:50 -0800 (PST)
gene  ha scritto:

Hi Martin,

> You can also use Python in the Python console, look at
> Using/visualizing 3D data (Z values)
> 
>   

thank you very much, I watched it last night, very interesting :-) I'll
came back to the issue for info

bye,
giuliano curti

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Re: [Qgis-developer] QGIS and 3D

[G. Allegri]

Thanks for remembering us of it. I couldn't retrieve it from the ML!
Visvis seems a good approach to the visualization of 3D data in QGIS. I
imagine it won't be as performant as native implementations (like osg, used
by Horao) but it would be probably more portable and easy to mantain...

giovanni


2014/1/25 gene 

> You can also use Python in the Python console, look at  Using/visualizing
> 3D
> data (Z values)
> <
> http://osgeo-org.1560.x6.nabble.com/Using-visualizing-3D-data-Z-values-td4126375.html#a5009086
> >
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/QGIS-and-3D-tp5099845p5099985.html
> Sent from the Quantum GIS - Developer mailing list archive at Nabble.com.
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>



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Re: [Qgis-developer] QGIS and 3D

[gene]

You can also use Python in the Python console, look at  Using/visualizing 3D
data (Z values)

  



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Re: [Qgis-developer] QGIS and 3D

[giulianc51]

Il giorno Fri, 24 Jan 2014 14:23:05 +0100
Vincent Picavet  ha scritto:

> Hello Giuliano,

Hello Vincent,
thank you for your replay :-)

> .
> If you want to have some 3D features for your GIS you can :
> * use qgis2threejs to visualize layers on top of a MNT with a WebGL
> browser

yes, I know but now I'm more interested in the analysis (section,
volume, surface, etc) than visualization;


> ..
> * Use latest PostGIS versions, which allow you to manipulate 3D
> objects. PostGIS + SFCGAL lets you do some computations on 3D objects
> with SQL. You can send SQL commands from within QGIS. See this video
> for an example and visualization of 3D objects with Horao (QGIS
> plugin to view PostGIS 3D objects) :
> http://vimeo.com/74869530

okay, it's good; I will  have a look at PostGIS + SFCGAL + Horao, it
seems to be very interesting;


> .
> 
> Vincent

thank you very much, best regards,
giuliano curti

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Re: [Qgis-developer] QGIS and 3D

[Vincent Picavet]

Hello Giuliano,

As for now, there is no support for 3D in QGIS, be it for visualization, or 
internally.

If you want to have some 3D features for your GIS you can :
* use qgis2threejs to visualize layers on top of a MNT with a WebGL browser
* Use the 3D features of grass through QGIS
* Use latest PostGIS versions, which allow you to manipulate 3D objects.
PostGIS + SFCGAL lets you do some computations on 3D objects with SQL. You can 
send SQL commands from within QGIS. See this video for an example and 
visualization of 3D objects with Horao (QGIS plugin to view PostGIS 3D 
objects) :
http://vimeo.com/74869530

There will probably be at some point an effort to support 3D objects in the low 
level QGIS code, and Marco already worked a bit on it I think. But this is a 
heavy-lifting task and a lot more work and funding are needed. Maybe Marco can 
elaborate a bit more on this.

Vincent

Le vendredi 24 janvier 2014 12:46:55, giulianc51 a écrit :
> hi all,
> 
> I'm new to the QGIS;
> 
> I like to explore the capabilities of QGIS towards 3D performances,
> I intend vector 3D;
> 
> I think of:
> - visualization (orthogonal, axonometric and perspective views)
> - sections (along with any plane, canonic or skew)
> - volume and surface calculation
> and so on;
> 
> I know that these operations are already possibile with raster layers
> and I did'nt intend to propose a flame for the primality of vector
> and/or raster;
> 
> I think only to analyze and eventually build some tools for managing 3D
> models, leaving to the user the choice of vector / raster selection;
> 
> I think that the possibility of managing, georeferencing and analyse
> point clouds from laserscanner, sfm, etc, could be an interesting
> chance;
> 
> From that point of view I'm curious of the presence in the QGIS API of
> some features 3D: Line3D, Point3D, QgsTINInterpolator, Vector3D;
> because I dont know the C/C++ and I can't see the original
> documentation, where can I find some documentation in pythonish mode
> (the pyqgis cookbook doesnt treat that subject) ? Which are the
> development purposes about 3D?
> 
> sorry for my bad english, thanks in advance, best regards,
> 
> giuliano curti
> melegnano, milano, italia
> 
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[Qgis-developer] QGIS and 3D

[giulianc51]

hi all,

I'm new to the QGIS; 

I like to explore the capabilities of QGIS towards 3D performances,
I intend vector 3D;

I think of:
- visualization (orthogonal, axonometric and perspective views)
- sections (along with any plane, canonic or skew)
- volume and surface calculation
and so on;

I know that these operations are already possibile with raster layers 
and I did'nt intend to propose a flame for the primality of vector
and/or raster;

I think only to analyze and eventually build some tools for managing 3D
models, leaving to the user the choice of vector / raster selection;

I think that the possibility of managing, georeferencing and analyse
point clouds from laserscanner, sfm, etc, could be an interesting
chance;

>From that point of view I'm curious of the presence in the QGIS API of
some features 3D: Line3D, Point3D, QgsTINInterpolator, Vector3D;
because I dont know the C/C++ and I can't see the original
documentation, where can I find some documentation in pythonish mode
(the pyqgis cookbook doesnt treat that subject) ? Which are the
development purposes about 3D?

sorry for my bad english, thanks in advance, best regards,

giuliano curti
melegnano, milano, italia

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