Problem with wxpython guy in Manjaro with grass 7.8.5 Dear colleagues,
Following a period of low use due to health issues I am once again trying to use GRASS to visualise and analyse archaeological data. I am running Manjaro and the latest download of GRASS from AUR. It starts fine and shows both display windows for the GUI and then the windows crash. It is repeatable. I have tried removing GRASS and reinstalling but that has not fixed the issue. As well I have tried changing the flags on the GUI. None make any difference, as soon as the mouse is apparently moved the windows crash. Is this a known problem and is there a work around? Thanks Tim Southern Dr Timothy Glyn Southern 0155 941 8432 0791 076 6814 > On 4 Apr 2021, at 20:00, [email protected] wrote: > > Send grass-user mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.osgeo.org/mailman/listinfo/grass-user > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of grass-user digest..." > > > Today's Topics: > > 1. Re: r.watershed identify inland watershed (ming han) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 3 Apr 2021 16:23:26 -0400 > From: ming han <[email protected]> > To: Micha Silver <[email protected]> > Cc: GRASS user list <[email protected]> > Subject: Re: [GRASS-user] r.watershed identify inland watershed > Message-ID: > <cad+uawjx1xbcc6jk+hau8mnda7ceajfweeeyewq379efwrp...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hi Micha > > I understand what you mean. But it requires another step to > manually identify depressions from these pre-conditioned DEM. > > Cheers > Ming > > > Micha Silver <[email protected]> ?2021?4?3??? ??12:43??? > >> >> On 4/2/21 5:37 PM, ming han wrote: >>> Maybe I am the only one who has this demand. Following is just a >>> recommendation to GRASS r.watershed function. >>> Maybe it is worth having an option to avoid r.watershed overcome >>> depressions. >>> The reasons are 1) there are many hydrologically pre condition DEM >>> data available globally, such as:HydroSHEDS, MERIT >>> 2) the depression in these DEM are real >>> depressions, overcome these depressions will make the entire drainage >>> system >> >> >> Regarding Hydrosheds, the documentation[1] in section 3.4 explains how >> they overcame the problem of sinks. They performed a regular "fill >> sinks" operation on areas that were SRTM artifacts. True natural >> depressions were identified manually, then another manual procedure of >> carving rivers was done to force flow thru these depressions and produce >> hydrologically correct streams and basins. So pre-conditioning to >> overcome depressions is not a magic bullet... >> >> >> In my opinion, the best results are obtained when true depressions >> (pits, salt playas or karst regions) are identified, and set to NULL in >> the elevation raster. That will allow r.watershed to stop routing at >> those locations, and produce correct stream and basin layers. >> >> >> [1]https://hydrosheds.org/images/inpages/HydroSHEDS_TechDoc_v1_2.pdf >> >> >>> incorrectly. >>> >>> I understand GRASS has other functions to solve this problem, but just >>> a user recommendation. I use GRASS a lot. >>> >>> Thanks >>> Ming >>> >>> ming han <[email protected] <mailto:[email protected]>> >>> ?2021?3?30??? ??8:06??? >>> >>> Got it, thanks everyone~ >>> Ming >>> >>> Micha Silver <[email protected] <mailto:[email protected]>> >>> ?2021?3?29??? ??2:40??? >>> >>> Hello: >>> >>> You might try `r.param.scale`, or even better `r.geomorphons` >>> modules to >>> identify geomorphology features, then filter out all pixels >>> identified >>> as pits. >>> >>> >>> r.watershed is purposely designed to overcome depressions, and >>> find flow >>> routing thru these spots. So I don't think you can use that >>> module to >>> identify depressions. >>> >>> >>> On 3/27/21 8:49 PM, ming han wrote: >>>> Hi Everyone >>>> >>>> When I do watershed delineation using r.watershed for >>> great salt >>>> lake watershed. I found r.watershed always tried to assign >>> an outlet >>>> for a great salt lake, which does actually not exist because >>> it is an >>>> inland lake and the great salt lake has no watershed outlet >>> at all. >>>> >>>> I noticed that there is a depression option. But is >>> there any >>>> way that r.watershed can automatically identify depressions >>> while >>>> defining flow accumulation and stream network? >>>> >>>> Thanks >>>> Ming >>>> >>>> _______________________________________________ >>>> grass-user mailing list >>>> [email protected] <mailto:[email protected]> >>>> https://lists.osgeo.org/mailman/listinfo/grass-user >>> <https://lists.osgeo.org/mailman/listinfo/grass-user> >>> >>> -- >>> Micha Silver >>> Ben Gurion Univ. >>> Sde Boker, Remote Sensing Lab >>> cell: +972-523-665918 >>> >> -- >> Micha Silver >> Ben Gurion Univ. >> Sde Boker, Remote Sensing Lab >> cell: +972-523-665918 >> >> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.osgeo.org/pipermail/grass-user/attachments/20210403/6b22a457/attachment-0001.html> > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user > > > ------------------------------ > > End of grass-user Digest, Vol 180, Issue 4 > ******************************************
_______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
