Re: [Qgis-user] Middle line of a river basin

2021-10-12 Thread Allan López
*Thank you very much indeed Misha and Thayer*. My problems are gone. My very best regards, Allan > > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:

Re: [Qgis-user] Very strange installation problem QGIS 3.20.3

2021-10-12 Thread giskraft . se
Hi Nicolas! I appreciate you trying to help. For now, I’ll just relax and wait for a fix which will come eventually. I am not in the mood for guessing what the false error message is trying to say. And the OSGEO4W installer has a download cycle that takes hours, even on my 100 Mbit connection.

Re: [Qgis-user] Very strange installation problem QGIS 3.20.3

2021-10-12 Thread Nicolas Cadieux
Perhaps this? https://www.thefreewindows.com/19928/fix-error-installation-directory-local-hard-drive/ I would try the OSGEO4W installer instead of the easy installer. Nicolas Cadieux https://gitlab.com/njacadieux > Le 12 oct. 2021 à 07:31, Mats Elfström a écrit : > >  > Hi Nicolas! > That

Re: [Qgis-user] Middle line of a river basin

2021-10-12 Thread Thayer Young
I don't know of a way to do it in QGIS, but you can use the ST_ApproximateMedialAxis function in PostGIS. Note your PostGIS needs to be compiled with the SFCGAL library. Note that not all PostGIS installers will include SFCGAL.  Also you may still need to clean up the data further, my

Re: [Qgis-user] Celestial map

2021-10-12 Thread Hernán De Angelis
Lester, Yes, it can be done. I believe you need to do some preprocessing on your star data to convert RA to degrees (which you wrote you do not want to do but is not difficult). I also guess you are aware that RA coordinates (or the x axis) have to be mirrored for use in geographical software

[Qgis-user] Celestial map

2021-10-12 Thread Lester Anderson
Hello, Is there a simple way of plotting star charts using Right Ascension and Declination, with proper scaling, without converting Right Ascension to degrees? Would like to create both a rectangular plot and North South polar plots. Thanks for any pointers Lester

Re: [Qgis-user] Very strange installation problem QGIS 3.20.3

2021-10-12 Thread Mats Elfström
Hi Nicolas! That is not an option. I have had QGIS installed in 'dotted' paths since 2.xx Currently 3.10, 3.16 and 3.20.1, all suggested by the installer. Dots in paths and folder names are perfectly valid and has nothing to do with 'local hard drive'. Den tis 12 okt. 2021 kl 13:06 skrev Nicolas

Re: [Qgis-user] Very strange installation problem QGIS 3.20.3

2021-10-12 Thread Nicolas Cadieux
Hi, My first reaction is that a LTR can be installed with a developer version but 3.20.1 and 3.20.3 not. I would need to test if this is still true. Before checking that, I would remove the dots “ . “ from the path and try again. Nicolas Cadieux https://gitlab.com/njacadieux > Le 12 oct.

Re: [Qgis-user] Middle line of a river basin

2021-10-12 Thread Micha Silver
I believe that the Geometric Attributes plugin can do both jobs. On 10/12/21 3:49 AM, Allan López wrote: Dear All, I need to automatically delineate the middle line of a river basin/valley

[Qgis-user] Very strange installation problem QGIS 3.20.3

2021-10-12 Thread Mats Elfström
Hi! I was going to install 3.20.3 in parallel with 3.20.1 when I got the strangest installation error. "Installation directory must be on a local hard drive." I can think of nothing more local than C:\Program Files\QGIS 3.20.3\ which is what the installer suggested. What is going on here? I have