Re: [Qgis-user] Identifying / Digitising small surface features automatically

2024-02-05 Thread Stefan Giese (WhereGroup) via QGIS-User 

Hi,

yes that is possible to automate this process. The main idea is to use 
an blur-filter on your DSM - a normalized 2D gauss kernel array for 
convolutions - where the size of the kernel determines the wide of the 
features that will be extracted. The second step is to build the 
difference between DSM and DSM_blured. So the small features will 
remain. for more theory see: 
https://www.isprs.org/proceedings/xxxvi/8-w2/SITTLER.pdf


Some years ago - in my former ArcGIS job - I've wrote a small python 
routine for ArcGis using numpy to do the job. The ArcGis script could be 
found here: https://files.wheregroup.com/s/qMdZB8TH8FWWboQ and can be 
adapted to QGIS.


Best regards

Stefan

Am 05.02.2024 um 20:45 schrieb Steve Research via QGIS-User:

Does anyone know how to locate small features on a digital surface model (dsm) 
in qgis and get their coordinates?

I have a field surface with distributed molehills they show up in the dsm but 
is there a tool that will mark them as objects to digitise their locations?

I have Qgis + Saga etc. but don’t know if there is a process to mark these 
without having to do it by hand (I have lots of fields to do!).



Sent from my iPhone

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Re: [Qgis-user] building gdal for mrsid

2024-02-05 Thread Don Harter via QGIS-User 
    I was able to build gdal 3.9.0 with much difficulty.  I learned 
something about docker files and cmake.  I was able to use checkinstall 
some but not with the final install.  There was something about the 
installation that checkinstall did not pick up on.  I found the gdal 
installation tree in /tmp.  I made a tar file of that to use with 
alien.  However someone decided that you cannot have an absolute path in 
a tar file.  I got one in there using the "--transform=EXPRESSION," 
parameter of the tar command. However when I ran alien it complained 
about the beginning "/" of the file name.  Anyways once I installed it; 
it was incompatible with qgis, and did not have the correct version of 
libgdal.


    So then I gave up on that and downloaded the same version of gdal 
as the packages that were available from the repositories.(3.3.4)  I 
used git to get the source code.  I later found a web page that had it 
in a tar file.  The installation is different for this lower version of 
gdal; it uses autotools.  The documention for the installation did not 
match up with the files. I was supposed to run ./configure but there was 
not a configure file.  So then I ran autogen.sh to generate configure.  
I then ran configure and "configure --help to make sure that I had mrsid 
built in the new gdal.  I had to try until I got it pointed to its 
location.  Then I ran make. Finally  I ran "sudo checkinstall 
--install=no --pkgname=gdal --pkgversion=3.4.3 
--provides=gdal-bin,libgdal30,libgdal-dev  make install"  I had a .deb 
package now and used sudo dpkg -i to install it.  But when I started  
qgis it said that a plugin was missing.  Searching the net I found out 
that python3-gdal package was not installed.  I tried to install it, but 
it would not install because of the conflicts and required versions.  I 
thought that I had fixed that when I specified some of that with the 
checkinstall command.  Info on the gdal package though shows such a 
dependency.  You can't force the install with apt, but with dpkg you can 
--force-all. the satisfy clause did not seem to work.  But dpkg only 
uses .deb files on installation.  So I went to the ubuntu repository and 
downloaded the appropriate .deb file.  I then force installed it. qgis 
appears to be running again with no missing layers, and mr sid works 
also.  It makes me mad that I had to spend all that time, because of 
some government agency using proprietary algorithms and with a probable 
conflict of interest.


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Re: [Qgis-user] QNEAT3 plugin - contact information

2024-02-05 Thread Emma Hain via QGIS-User 
you could log the issue here: https://github.com/root676/QNEAT3/issues



On Fri, 2 Feb 2024 at 23:25, Andrea Giudiceandrea via QGIS-User <
qgis-user@lists.osgeo.org> wrote:

> > Antonio Valanzano anvalanz at gmail.com
> > Fri Feb 2 04:57:05 PST 2024
>
> > Does someone know how to contact *Clemens Raffler* the developer og
> QNEAT3
> > plugin ?
>
> Hi Antonio,
> have you tried to contact Clemens Raffler without success (how have you
> tried?) or you don't know how to contact him?
>
> If the latter, then a web search gives some hints:
>
> - https://github.com/root676/QNEAT3
> - https://github.com/root676/QNEAT3/blob/master/metadata.txt
> - https://twitter.com/root676
> - https://www.linkedin.com/in/clemens-raffler-335085130
> - https://tbwresearch.org/en/staff-member/clemens-raffler/
>
> Best regards.
>
> Andrea
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Re: [Qgis-user] Import ISOBUS vector files

2024-02-05 Thread Fernando M. Roxo da Motta via QGIS-User 
On Mon, 5 Feb 2024 12:21:07 +, Stulgies Dirk via QGIS-User
 wrote:


> Hello,
> Is there a way to import ISOBUS (ISO 11783) files into QGIS? This
> format uses a combination of XML and BIN files. I added an example of
> this file to the email.
> 

 There is a proect in GitHub that may help you:

https://github.com/TwinYields/ISO_GML_Converter


  HTH


  Roxo

-- 
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Fernando M. Roxo da Motta   | Editor?
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[Qgis-user] Optimize QGIS Command_Line

2024-02-05 Thread Dennis Burgess via QGIS-User 
I have two  command lines, one reads from my MSSQL database and creates a 
GeoPackage on the local disk.  This takes WAY too long, just to create it , it 
uses 5% or less CPU, and is SUPER slow. Looking for methods to speed this up.  
The data is around 1.2 to 1.4 gig of pop, but it should not take 50 min to 
create.

Also I am doing a dissolve on this data, once its on the disk, this also takes 
quite a while, even though when I do it from QGIS it takes like 10 min vs an 
hour or more on the computer with the command line.

I'm sure I am doing something wrong on both of these. Just trying to understand 
what it would be.

Thanks for any assistance !

Dennis

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Re: [Qgis-user] Import ISOBUS vector files

2024-02-05 Thread Stulgies Dirk via QGIS-User 
Hello,
here is the example.

Mit freundlichen Grüßen

i.A. Dirk Stulgies
**
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Von: QGIS-User  Im Auftrag von Stulgies Dirk 
via QGIS-User
Gesendet: Montag, 5. Februar 2024 13:21
An: qgis-user@lists.osgeo.org
Betreff: [Qgis-user] Import ISOBUS vector files

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dass der Inhalt ungefährlich ist.

Hello,
Is there a way to import ISOBUS (ISO 11783) files into QGIS? This format uses a 
combination of XML and BIN files. I added an example of this file to the email.


Mit freundlichen Grüßen

i.A. Dirk Stulgies
**
[cid:image001.png@01DA5837.21FBDA10]

NPZ Innovation GmbH
Hohenlieth-Hof, D-24363 Holtsee
Tel.+49-4351-736 277 
Fax +49-4351-736 271
Mail:  d.stulg...@npz-innovation.de
Web: www.npz-innovation.de

Firmensitz Hohenlieth, Holtsee
Amtsgericht Kiel, HRB 15342 Kl
Geschäftsführer: Dr. Gunhild Leckband, Thorsten Pommer



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Re: [Qgis-user] Import ISOBUS vector files

2024-02-05 Thread Werner Macho via QGIS-User 
Hi!

As far as I can see ISOBUS is a communication protocol and not a
GIS-datafile standard.

(
https://www.csselectronics.com/pages/isobus-introduction-tutorial-iso-11783#what-is-isobus
)
So my first question would be - why would you "import" that in QGIS and for
what purpose?

regards
Werner


On Mon, Feb 5, 2024 at 1:21 PM Stulgies Dirk via QGIS-User <
qgis-user@lists.osgeo.org> wrote:

> Hello,
>
> Is there a way to import ISOBUS (ISO 11783) files into QGIS? This format
> uses a combination of XML and BIN files. I added an example of this file to
> the email.
>
>
>
>
>
> Mit freundlichen Grüßen
>
>
>
> i.A. Dirk Stulgies
>
> **
>
>
>
> NPZ Innovation GmbH
>
> Hohenlieth-Hof, D-24363 Holtsee
>
> Tel.+49-4351-736 277
>
> Fax +49-4351-736 271
>
> Mail:  d.stulg...@npz-innovation.de
>
> Web: www.npz-innovation.de
>
>
>
> Firmensitz Hohenlieth, Holtsee
>
> Amtsgericht Kiel, HRB 15342 Kl
>
> Geschäftsführer: Dr. Gunhild Leckband, Thorsten Pommer
>
>
>
> --
> This email was scanned by Bitdefender
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[Qgis-user] Import ISOBUS vector files

2024-02-05 Thread Stulgies Dirk via QGIS-User 
Hello,
Is there a way to import ISOBUS (ISO 11783) files into QGIS? This format uses a 
combination of XML and BIN files. I added an example of this file to the email.


Mit freundlichen Grüßen

i.A. Dirk Stulgies
**
[cid:image001.png@01DA5836.2CFDF4D0]

NPZ Innovation GmbH
Hohenlieth-Hof, D-24363 Holtsee
Tel.+49-4351-736 277 
Fax +49-4351-736 271
Mail:  d.stulg...@npz-innovation.de
Web: www.npz-innovation.de

Firmensitz Hohenlieth, Holtsee
Amtsgericht Kiel, HRB 15342 Kl
Geschäftsführer: Dr. Gunhild Leckband, Thorsten Pommer



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