[QGIS-Developer] QGIS-Developer Digest, Vol 209, Issue 25
Jean-Baptiste Peter
jbpeter at outlook.com
Mon Mar 20 06:37:48 PDT 2023
Hi Andrea,
I faced the same issue recently and found these two tools to convert DEM into TIN:
- dem2mesh: https://github.com/OpenDroneMap/dem2mesh
- tin-terrain https://github.com/heremaps/tin-terrain
dem2mesh worked in my use case to convert a large DEM for 3d visualization. It produces nice triangular faces of uniform size. Tin-terrain creates large triangles in flat parts of the mesh.
It would be great to have an algorithm like dem2mesh directly in QGIS!
Best,
--
Jean-Baptiste PETER
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Subject: QGIS-Developer Digest, Vol 209, Issue 25
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Today's Topics:
1. QGIS webserver size vs publishing old docs (DelazJ)
2. Tool to create Mesh from raster layer? (Andreas Neumann)
3. Re: Tool to create Mesh from raster layer? (Saber Razmjooei)
4. Re: Tool to create Mesh from raster layer? (Sebastian Gutwein)
5. Re: Tool to create Mesh from raster layer?
(Stefan Giese (WhereGroup))
----------------------------------------------------------------------
Message: 1
Date: Mon, 20 Mar 2023 12:21:51 +0100
From: DelazJ <delazj at gmail.com>
To: qgis-psc <qgis-psc at lists.osgeo.org>, qgis-developer
<qgis-developer at lists.osgeo.org>, qgis-community
<qgis-community-team at lists.osgeo.org>
Subject: [QGIS-Developer] QGIS webserver size vs publishing old docs
Message-ID:
<CAECJsSrJO3Lrppdjyvt1=X=eSqWqbYrmLk3_C=9jVaj+5QKaQQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi all (and sorry for the cross-post)
Richard has raised the issue a couple of times with no specific feedback/decision but I think now we NEED to go forward : there is not enough space on our servers to store everything we want to share.
Yesterday, I updated the docs infrastructure to serve translated versions of the 3.28 documentation but they are not published this morning, probably because of lack of space to get them pasted.
# du -hs *
255M doc-test
579M QGIS-Documentation
7.2G QGIS-Documentation-2.14
6.3G QGIS-Documentation-2.18
7.7G QGIS-Documentation-2.8
12G QGIS-Documentation-3.10
11G QGIS-Documentation-3.16
9.4G QGIS-Documentation-3.22
579M QGIS-Documentation-3.28
8.0G QGIS-Documentation-3.4
31G QGIS-tests
16G QGIS-Website
An option could be to rent a bigger webserver but a few questions/suggestions so far (I'm only speaking for the docs as I don't know what is behind other folders):
- Do we need to serve all these versions? FYI we recently silently removed and redirected <2.8 docs (and nobody complained) so we could probably be more "aggressive"
- It could be nice to define some strategy on this area: e.g. we keep publishing master, current LTR, previous LTR and any older URL is redirected to current LTR --> meaning that today we would be serving only testing in English, 3.28 and 3.22 in English + translations. OR one more older LTR (ie 3.16)?
PS: this issue somehow also affects the PyQGIS documentation repo [0], due to github-pages size limits
Regards,
Harrissou
[0] https://github.com/qgis/pyqgis/issues/104#issuecomment-1354338491
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Message: 2
Date: Mon, 20 Mar 2023 13:56:28 +0100
From: Andreas Neumann <a.neumann at carto.net>
To: QGIS Developers List <qgis-developer at lists.osgeo.org>
Subject: [QGIS-Developer] Tool to create Mesh from raster layer?
Message-ID: <ed59755b7330baa584f427dc2b3d26d9 at carto.net>
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Hi QGIS devs,
Is there a tool available to create a Mesh (or TIN as a special mesh
variation) from a source raster layer containing terrain values?
I did not find one - but maybe I didn't look everywhere.
If not in QGIS - do you know an external Open Source tool that could do that, while keeping real world coordinates?
Thanks,
Andreas
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Message: 3
Date: Mon, 20 Mar 2023 14:02:50 +0100
From: Saber Razmjooei <saber.razmjooei at lutraconsulting.co.uk>
To: Andreas Neumann <a.neumann at carto.net>
Cc: QGIS Developers List <qgis-developer at lists.osgeo.org>
Subject: Re: [QGIS-Developer] Tool to create Mesh from raster layer?
Message-ID:
<CAH=WbRAuNmX_fxA1oyqJUL5G=5sq5KH=8vgejuRLtejGwP1CYQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi Andreas,
There should be a tool to convert vector to mesh (under Processing > Mesh > TIN Mesh Creation). There will also be some new Processing tools for handling point clouds. But I am not aware of any Raster > Mesh tools.
Kind regards
Saber
On Mon, 20 Mar 2023 at 13:56, Andreas Neumann via QGIS-Developer < qgis-developer at lists.osgeo.org> wrote:
> Hi QGIS devs,
>
> Is there a tool available to create a Mesh (or TIN as a special mesh
> variation) from a source raster layer containing terrain values?
>
> I did not find one - but maybe I didn't look everywhere.
>
> If not in QGIS - do you know an external Open Source tool that could
> do that, while keeping real world coordinates?
>
> Thanks,
>
> Andreas
> _______________________________________________
> QGIS-Developer mailing list
> QGIS-Developer at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
--
Saber Razmjooei
www.lutraconsulting.co.uk
+44 (0)7568 129733
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Message: 4
Date: Mon, 20 Mar 2023 09:11:02 -0400
From: Sebastian Gutwein <bas at rdgland.com>
To: Saber Razmjooei <saber.razmjooei at lutraconsulting.co.uk>
Cc: Andreas Neumann <a.neumann at carto.net>, QGIS Developers List
<qgis-developer at lists.osgeo.org>
Subject: Re: [QGIS-Developer] Tool to create Mesh from raster layer?
Message-ID:
<CAED_52pE-ob9nhZoFiHKKNwCVcEPP3K+jtfYsGYwnNFHM=J7pg at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
The ridiculous work around I use is to go through Blender using the BlenderGIS plugin. Import the raster into Blender as a new mesh > Decimate the mesh > Export as a shapefile > Run TIN Mesh Creation in QGIS.
On Mon, Mar 20, 2023 at 9:03?AM Saber Razmjooei via QGIS-Developer < qgis-developer at lists.osgeo.org> wrote:
> Hi Andreas,
>
> There should be a tool to convert vector to mesh (under Processing >
> Mesh
> > TIN Mesh Creation). There will also be some new Processing tools for
> handling point clouds. But I am not aware of any Raster > Mesh tools.
>
> Kind regards
> Saber
>
> On Mon, 20 Mar 2023 at 13:56, Andreas Neumann via QGIS-Developer <
> qgis-developer at lists.osgeo.org> wrote:
>
>> Hi QGIS devs,
>>
>> Is there a tool available to create a Mesh (or TIN as a special mesh
>> variation) from a source raster layer containing terrain values?
>>
>> I did not find one - but maybe I didn't look everywhere.
>>
>> If not in QGIS - do you know an external Open Source tool that could
>> do that, while keeping real world coordinates?
>>
>> Thanks,
>>
>> Andreas
>> _______________________________________________
>> QGIS-Developer mailing list
>> QGIS-Developer at lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>>
>
>
> --
> Saber Razmjooei
> www.lutraconsulting.co.uk
> +44 (0)7568 129733
> _______________________________________________
> QGIS-Developer mailing list
> QGIS-Developer at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
--
___________________________
Sebastian "Bas* " Gutwein
*rhymes with Josh
Regenerative Design Group
1 Chevalier Ave
Greenfield, Ma 01301
Web: regenerativedesigngroup.com
(631) 241-1018
*Look close, think big, make change. *
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Message: 5
Date: Mon, 20 Mar 2023 14:20:51 +0100
From: "Stefan Giese (WhereGroup)" <stefan.giese at wheregroup.com>
To: Sebastian Gutwein <bas at rdgland.com>, Saber Razmjooei
<saber.razmjooei at lutraconsulting.co.uk>
Cc: QGIS Developers List <qgis-developer at lists.osgeo.org>
Subject: Re: [QGIS-Developer] Tool to create Mesh from raster layer?
Message-ID: <d0c6da73-69f4-d776-562e-d0e33b110a4d at wheregroup.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi all,
I think it is not nessasary to go through Blender, just use theese two
algorithm:
* pixeltopoints
* tinmeshcreation
Best regards
Stefan
Am 20.03.2023 um 14:11 schrieb Sebastian Gutwein via QGIS-Developer:
> The ridiculous?work around I use is to go through?Blender using the
> BlenderGIS plugin. Import the?raster into Blender as a new mesh >
> Decimate the mesh > Export as a shapefile > Run TIN Mesh Creation in
> QGIS.
>
> On Mon, Mar 20, 2023 at 9:03?AM Saber Razmjooei via QGIS-Developer
> <qgis-developer at lists.osgeo.org> wrote:
>
> Hi Andreas,
>
> There should be a tool to convert vector to mesh (under Processing
> > Mesh > TIN Mesh Creation). There will also be some new
> Processing tools for handling point clouds. But I am not aware of
> any Raster > Mesh tools.
>
> Kind regards
> Saber
>
> On Mon, 20 Mar 2023 at 13:56, Andreas Neumann via QGIS-Developer
> <qgis-developer at lists.osgeo.org> wrote:
>
> Hi QGIS devs,
>
> Is there a tool available to create a Mesh (or TIN as a
> special mesh variation) from a source raster layer containing
> terrain values?
>
> I did not find one - but maybe I didn't look everywhere.
>
> If not in QGIS - do you know an external Open Source tool that
> could do that, while keeping real world coordinates?
>
> Thanks,
>
> Andreas
>
> _______________________________________________
> QGIS-Developer mailing list
> QGIS-Developer at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe:
> https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
>
>
> --
> Saber Razmjooei
> www.lutraconsulting.co.uk <http://www.lutraconsulting.co.uk>
> +44 (0)7568 129733
> _______________________________________________
> QGIS-Developer mailing list
> QGIS-Developer at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe:
> https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
>
>
> --
> ___________________________
> Sebastian "Bas* " Gutwein
> *rhymes with Josh
>
> Regenerative Design Group
> 1 Chevalier Ave
> Greenfield, Ma 01301
> Web: regenerativedesigngroup.com <http://regenerativedesigngroup.com>
> (631) 241-1018
>
> /Look close, think big, make change. /
>
> _______________________________________________
> QGIS-Developer mailing list
> QGIS-Developer at lists.osgeo.org
> List info:https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-developer
--
Mit freundlichen Gr??en
Stefan Giese
Projektleiter/Consultant
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