Hello, On Sat, Apr 10, 2021 at 12:51 PM Timothy Glyn Southern via grass-user < [email protected]> wrote:
> 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? > based on your description it sounds like a bug in wxPython with Python 3.9: https://github.com/OSGeo/grass/issues/1123 Hope that helps, Anna > 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 >
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