[Qgis-community-team] 3D view of LIDAR data city of boulder

Tue Feb 11 08:22:32 PST 2020

Hi Saber,

ok will the clipped Boulder data be suitable for the 3D dataset that we
want to provide in the qgis sample data?

I wonder if srtm data will have a good resolution. Will you also clip a
srtm dataset for usage in the qgis sample data?

Then I would of course prefer to use this data so that a user can
quickly check out the usage of the 3D view functionalities!

Cheers, Larissa (-:

Am 10.02.2020 um 16:55 schrieb Saber Razmjooei:
> Hi Larissa,
>
> I was clipping the Boulder data to something manageable. But if you
> have moved to NY data, that should be fine too.
>
> In terms of the underlying terrain, we have a separate blog post.
> https://www.lutraconsulting.co.uk/blog/2018/03/01/working-with-qgis-3d-part-1/
>
> Usually the z-scales in terrain and buildings do not line up nicely,
> therefore I thought it is better to have 2 different sections: one on
> terrain (rasters) and one on buildings (vector).
>
> Let me know if you have any questions.
>
> Kind regards
> Saber
>
> On Mon, 10 Feb 2020 at 15:38, Larissa Junek <l.junek at gmx.net
> <mailto:l.junek at gmx.net>> wrote:
>
>     Hi Saber,
>
>     I switched the location and prepared a geopackage with the 3D data
>     of new york.
>
>     I think your blog should be updated as I still only can depict a
>     flat plane of the data in the 3d view tool.
>
>     Sorry for bothering but it's my task to write about the 3D
>     settings in QGIS 3.10 ...
>
>     Cheers, Larissa
>
>     Am 10.02.2020 um 15:17 schrieb Larissa Junek:
>>
>>     Hi Saber,
>>
>>     thanks for giving me the hint. Do I need to add a raster layer
>>     with height information like geoTiff (SRTM data etc.)
>>
>>     in order to define the position of the 3D buildings ? I got this
>>     information in a presentation on youtube. Right now, after
>>
>>     defining the single symbol of walls and roofs (data city of
>>     Boulder), there is only a plane :-(
>>
>>     Cheers Larissa
>>
>>     Am 08.02.2020 um 13:38 schrieb Saber Razmjooei:
>>>     Hi Larissa,
>>>
>>>     Apologies. Boulder data indeed contain walls and roofs.
>>>
>>>     To view the data in 3D, you need to go to each layer and open
>>>     Properties > 3D view and change the style to Single symbol.
>>>
>>>     Also, the dataset is very large. It would be easier if you crop
>>>     the data to a smaller area.
>>>
>>>     Regards
>>>     Saber
>>>
>>>
>>>     On Sat, 8 Feb 2020 at 12:00, Saber Razmjooei
>>>     <saber.razmjooei at lutraconsulting.co.uk
>>>     <mailto:saber.razmjooei at lutraconsulting.co.uk>> wrote:
>>>
>>>         Hi Larissa,
>>>
>>>         Many thanks for looking into documenting this.
>>>
>>>         I had a quick look at the data. It is only the footprint.
>>>         So, you can only extrude the data (based on height).
>>>
>>>         There is a good data source of 3D buildings here:
>>>         https://github.com/wonder-sk/3d-spatial-data
>>>
>>>         And for building in New York, we wrote a blog post here. The
>>>         data have z-valuse and should automatically get picked up by
>>>         the 3D map view.
>>>         https://www.lutraconsulting.co.uk/blog/2017/10/16/buildings-in-qgis3d/
>>>
>>>         Feel free to use any of the content from our website in the
>>>         documentation.
>>>
>>>         Kind regards
>>>         Saber
>>>
>>>         On Fri, 7 Feb 2020 at 13:59, Larissa Junek <l.junek at gmx.net
>>>         <mailto:l.junek at gmx.net>> wrote:
>>>
>>>             Hello folks,
>>>
>>>             for documentation purposes I'd like to visualize the 3d
>>>             data of the city
>>>             of boulder in qgis 3.10 .
>>>
>>>             https://bouldercolorado.gov/open-data/city-of-boulder-3d-buildings/
>>>
>>>             Unfortunately qgis crashes when loading the shapefile
>>>             into the 3d view.
>>>
>>>             Also, where do I have access to the z-coordinate so that
>>>             there will be a
>>>             3d view. At the moment there is only visible a plane
>>>             with the vectors
>>>             but no "z-value"  in the 3d view application. Extrusion
>>>             doesn't help
>>>             solute the problem.
>>>
>>>             There is a hint that these data have something to do
>>>             with GeoJSon, so
>>>             maybe I have to find another 3d data suitable for using
>>>             in the 3D view
>>>             application.
>>>
>>>             Can somebody help?
>>>
>>>             Cheers, Larissa
>>>
>>>             _______________________________________________
>>>             Qgis-community-team mailing list for organizing
>>>             community resources such as documentation, translation etc..
>>>             Qgis-community-team at lists.osgeo.org
>>>             <mailto:Qgis-community-team at lists.osgeo.org>
>>>             https://lists.osgeo.org/mailman/listinfo/qgis-community-team
>>>
>>>
>>>
>>>         --
>>>         Saber Razmjooei
>>>         www.lutraconsulting.co.uk <http://www.lutraconsulting.co.uk>
>>>         +44 (0)7568 129733
>>>
>>>
>>>
>>>     --
>>>     Saber Razmjooei
>>>     www.lutraconsulting.co.uk <http://www.lutraconsulting.co.uk>
>>>     +44 (0)7568 129733
>
>
>
> --
> Saber Razmjooei
> www.lutraconsulting.co.uk <http://www.lutraconsulting.co.uk>
> +44 (0)7568 129733
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