Re: [GRASS-user] Filling sinks w/ minimum slope

Hi Ken, To my knowledge r.watershed does not require to fill sinks in advance, because it has a minimal impact routing for handling (non-real) sinks. Do you have a particular reason for your wish to fill the DEM in advance? Cheers Stefan -Original Message- From: grass-user

[GRASS-user] A GRASS approach for modelling forest line

Dear all, Zofie and me are trying to mode altitude of forest line in GRASS and R. We have a couple of 100k pixels that we assume to represent forest line and now want to explain their altitude with explanatory variables (terrain, temperature, precipitation and the like). In a next step we want

Re: [GRASS-user] Unable to open the Corine land cover map using GrassGIS 7

Hi Hakim, Try r.import (https://grass.osgeo.org/grass72/manuals/r.import.html). ETRS LAEA (EPSG:3035) is of course “supported”. Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Hakim Benoudjit Sent: mandag 9. oktober 2017 16.02 To:

Re: [GRASS-user] Extract subnet from grass vector network based on selected nodes

Hi Johannes, Sorry for the delayed response. You could try v.net and then use igraph. See: https://github.com/NINAnor/gudbrand_hydro/blob/master/v.igraph.order.py as an example for network analysis using a GRASS python script in combination with igraph. What you would need is to compute the

Re: [GRASS-user] Extract subnet from grass vector network based on selected nodes

not necessary.. Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Stefan Blumentrath Sent: onsdag 27. september 2017 13.30 To: Johannes Radinger <johannesradin...@gmail.com>; GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GRASS-u

Re: [GRASS-user] Extract subnet from grass vector network based on selected nodes

Hei Johannnes, Maybe looping over the different possible combinations of nodes using https://grass.osgeo.org/grass72/manuals/v.net.path.html does the job? Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Johannes Radinger Sent: onsdag 27. september 2017

Re: [GRASS-user] Extract subnet from grass vector network based on selected nodes

Sorry, there is: https://grass.osgeo.org/grass72/manuals/v.net.allpairs.html From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Johannes Radinger Sent: onsdag 27. september 2017 13.12 To: GRASS user list Subject: [GRASS-user] Extract subnet

Re: [GRASS-user] imagery data: geometry shift validation

Hi Martin, Maybe this: https://grass.osgeo.org/grass72/manuals/addons/i.points.auto.html can be of help? Cheers Stefan -Original Message- From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Martin Landa Sent: søndag 3. desember 2017 19.37 To: GRASS users list

Re: [GRASS-user] i.atcorr with Sentinel2

P. S. Neither does it help to divide by 1... Von: grass-user [grass-user-boun...@lists.osgeo.org] im Auftrag von Stefan Blumentrath [stefan.blumentr...@nina.no] Gesendet: Montag, 18. Dezember 2017 16:35 An: Moritz Lennert; Žofie Cimburová Cc: GRASS

Re: [GRASS-user] i.atcorr with Sentinel2

Hi Moritz, Thanks for helping with troubleshooting! QUANTIFICATION_VALUE is 1, Thus dividing with it gives a maximum value of 2.8... Any idea how to figure out if it is 12 or 16 bit image. It is directly downloaded from ESA... Cheers Stefan -Original Message- From: grass-user

Re: [GRASS-user] i.atcorr with Sentinel2

Forgot to mention, my test data is tiny (< 3MB)… From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Stefan Blumentrath Sent: tirsdag 19. desember 2017 15.24 To: Sajid Pareeth <spare...@gmail.com> Cc: GRASS user list <grass-user@lists.osgeo.org> Subject:

Re: [GRASS-user] i.atcorr with Sentinel2

share username and password offlist… Cheers Stefan From: Sajid Pareeth [mailto:spare...@gmail.com] Sent: tirsdag 19. desember 2017 12.51 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: Moritz Lennert <mlenn...@club.worldonline.be>; Žofie Cimburová <zoficimbur...@gmail.c

Re: [GRASS-user] i.atcorr with Sentinel2

... From: Sajid Pareeth [mailto:spare...@gmail.com] Sent: tirsdag 19. desember 2017 16.08 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GRASS-user] i.atcorr with Sentinel2 Hi Would you be able to provide me wit

Re: [GRASS-user] Install GRASS stable and experimental in parallel

[mailto:neteler.os...@gmail.com] On Behalf Of Markus Neteler Sent: torsdag 14. desember 2017 12.57 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: GRASS user list <grass-user@lists.osgeo.org>; Robert Zahl Dybvad <robert.dyb...@nina.no> Subject: Re: [GRASS-user] In

[GRASS-user] Install GRASS stable and experimental in parallel

Hi, Is it possible to install (any) development / test version of GRASS (trunk or 7.4.0RC2) in parallel to the stable version (GRASS 7.2) from UbunutGIS both at the same machine? I know both can co-exist when I compile from source, but a binary package might come in handy in some cases...

Re: [GRASS-user] i.atcorr with Sentinel2

le segfaults. ?? Do I need a newer GRASS? Best, Micha On 12/19/2017 04:24 PM, Stefan Blumentrath wrote: Dear Sajid, Thanks so much for your reply and confirming that the module works in principle! Would you be able to provide me with the 1000 X 1000 clip of your data, so I can check if it is my

Re: [GRASS-user] i.atcorr with Sentinel2

] On Behalf Of Markus Neteler Sent: tirsdag 19. desember 2017 20.38 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GRASS-user] i.atcorr with Sentinel2 On Tue, Dec 19, 2017 at 4:58 PM, Stefan Blumentrath <stefan.blum

Re: [GRASS-user] i.atcorr with Sentinel2

, Stefan -Original Message- From: Moritz Lennert [mailto:mlenn...@club.worldonline.be] Sent: mandag 18. desember 2017 16.58 To: Stefan Blumentrath <stefan.blumentr...@nina.no>; Žofie Cimburová <zoficimbur...@gmail.com> Cc: GRASS user list <grass-user@lists.osgeo.org> Subjec

Re: [GRASS-user] i.atcorr with Sentinel2

ion in existing posts, unfortunately... Any idea what else we could try? Cheers Stefan -Original Message- From: Moritz Lennert [mailto:mlenn...@club.worldonline.be] Sent: mandag 18. desember 2017 17.06 To: Stefan Blumentrath <stefan.blumentr...@nina.no>; Žofie Cimburová <zoficimbur.

Re: [GRASS-user] i.atcorr with Sentinel2

mic and will report back from that exercise. Meanwhile, can anyone confirm that i.atcorr in GRASS 7.4.0RC1 actually works with Sentinel-2 data? Cheers Stefan -Original Message- From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Stefan Blumentrath Sent: tirsd

Re: [GRASS-user] i.atcorr with Sentinel2

input image and value ranges... Shall I open a ticket? Any idea/chance to get this new feature in G7.4 to work...? Any pointer/help would be very much appreciated! Cheers Stefan -Original Message- From: Stefan Blumentrath Sent: tirsdag 19. desember 2017 10.56 To: Stefan Blumentrath

[GRASS-user] FW: i.spec.unmix - scale results to 0-100%

Oops, forgot to copy the list… From: Stefan Blumentrath Sent: mandag 6. november 2017 13.15 To: 'Žofie Cimburová' <zoficimbur...@gmail.com> Subject: RE: [GRASS-user] i.spec.unmix - scale results to 0-100% My guess would be that you have to normalize the data for every layer in each pixel

Re: [GRASS-user] Large import runs out of memory

Hi Rich, Please try GRASS_VECTOR_LOWMEM environment variable: GRASS_VECTOR_LOWMEM [vectorlib] If the environment variable GRASS_VECTOR_LOWMEM exists, memory consumption will be reduced when building vector topology support structures. Recommended for creating large vectors. See:

Re: [GRASS-user] GRASS-way to delete points from a map and attribute table

Did you try v.edit: https://grass.osgeo.org/grass72/manuals/v.edit.html Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Johannes Radinger Sent: torsdag 9. november 2017 10.04 To: GRASS user list Subject: [GRASS-user] GRASS-way

Re: [GRASS-user] GRASS-way to delete points from a map and attribute table

So, removing records from the attribute table would be a job for db.execute of db.select I guess… From: Johannes Radinger [mailto:johannesradin...@gmail.com] Sent: torsdag 9. november 2017 10.17 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: GRASS user list <grass-user@lists.

Re: [GRASS-user] Merging connected stream lines

Hi, Did you try: https://grass.osgeo.org/grass72/manuals/v.net.components.html That might give you a common attribute for all connected lines in your network… Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Huidae Cho Sent: torsdag 26. oktober 2017

Re: [GRASS-user] i.atcorr with Sentinel2

Metz [mailto:markus.metz.gisw...@gmail.com] Sent: onsdag 20. desember 2017 22.52 To: Moritz Lennert <mlenn...@club.worldonline.be> Cc: Stefan Blumentrath <stefan.blumentr...@nina.no>; Sajid Pareeth <spare...@gmail.com>; GRASS user list <grass-user@lists.osgeo.org>

Re: [GRASS-user] i.atcorr with Sentinel2

For completness: https://trac.osgeo.org/grass/ticket/3469 -Original Message- From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Stefan Blumentrath Sent: torsdag 21. desember 2017 08.18 To: Markus Metz <markus.metz.gisw...@gmail.com>; Moritz Lennert

Re: [GRASS-user] i.atcorr with Sentinel2

Thanks again, Sajid and Moritz! I will try to compile on a newer OS and also file a ticket (I guess it is a packaging issue?)... Cheers Stefan -Original Message- From: Moritz Lennert [mailto:mlenn...@club.worldonline.be] Sent: onsdag 20. desember 2017 17.41 To: Stefan Blumentrath

Re: [GRASS-user] To import from or to link to data stored in a PostgreSQL data base?

Hei Nikos, What about using gdal_rasterize and then r.external output=MASK? Cheers Stefan From: grass-user on behalf of Nikos Alexandris Sent: Tuesday, May 8, 2018 4:01:14 PM To: GRASS-GIS user

Re: [GRASS-user] reorder columns in vector attribute table

Ciao Vero, Unfortunately, it seems you have to create a new table with desired column order, copy data into it (INSERT INTO FROM SELECT) and then link the new table to your vector map (v.db.connect)…: https://stackoverflow.com/questions/20574113/sqlite3-how-to-reorder-columns-in-a-table Note

[GRASS-user] Stream extraction and effect of land cover and precipitation

Dear GRASS users, I am doing some stream extraction with r.stream.extract, just using a terrain model. This works generally quite nice. However, I notice that e.g. contributions of lakes and mires to stream generation are under-estimated if all pixels contribute equally, regardless of their

Re: [GRASS-user] Problem importing ESRI grid file (.adf)

Hi Rich, There should be a "dblbnd.adf" file in the ESRI grid directory. Please try that to import the data. So: r.in.gdal -o --overwrite input=Bare_Earth/bh45122c3/dblbnd.adf output=bare_earth Hope that helps. Cheers Stefan -Original Message- From: grass-user On Behalf Of Rich

[GRASS-user] FW: Stream order from existing stream network layer

Forgot the list… From: Stefan Blumentrath Sent: tirsdag 1. mai 2018 08.57 To: 'Shane Carey' <careys...@gmail.com> Subject: RE: [GRASS-user] Stream order from existing stream network layer Hi Shane, Please have a look at: https://grass.osgeo.org/grass74/manuals/addons/v.stream.orde

Re: [GRASS-user] Stream order from existing stream network layer

; Sent: tirsdag 1. mai 2018 10.29 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Subject: Re: [GRASS-user] Stream order from existing stream network layer Hi Stefan, I had a look at this, but it requires a point layer also - which I don't have unfortunately. Thanks Le gach dea ghui, Sha

[GRASS-user] Postdoc/Phd - Mapping urban nature values

Dear all, The Norwegian Institute for Nature Research (NINA) seeks a post doc or Ph.D. candidate in mapping and valuation of ecosystem services from green infrastructure in Oslo. The candidate has preferably skills in Open Source GIS (OSGeo) and a M.Sc./Ph.D. in geomatics with an interest in

Re: [GRASS-user] Merging connected stream lines

ail.com>> wrote: On Thu, Oct 26, 2017 at 5:02 PM, Markus Neteler <nete...@osgeo.org<mailto:nete...@osgeo.org>> wrote: > > On Thu, Oct 26, 2017 at 9:58 AM, Stefan Blumentrath > <stefan.blumentr...@nina.no<mailto:stefan.blumentr...@nina.no>> wrote: > &g

Re: [GRASS-user] i.atcorr with Sentinel2

Great! Thanks, we will have a look at it! Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Markus Metz Sent: tirsdag 23. januar 2018 09.41 To: Markus Neteler Cc: GRASS user list Subject: Re: [GRASS-user]

Re: [GRASS-user] i.atcorr with Sentinel2

OK. Will do so once maintenance for create_iwave.py is done! -Original Message- From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Markus Neteler Sent: tirsdag 23. januar 2018 11.51 To: Žofie Cimburová Cc: GRASS user list

Re: [GRASS-user] i.atcorr with Sentinel2

No problem. Any chance I can contribute to maintenance of create_iwave.py? What needs to be done? Take your latest changes into account? If you think it makes sense I will try to create a patch for adding S2B to i.atcorr (would be a nice exercise and does not seem too complex)? Will open a

Re: [GRASS-user] i.atcorr with Sentinel2

Or just as a screen output? You did not mean band value limits, right? Not sure I am of help/useful for fixing create_iwave.py, but I`ll do my best… Cheers Stefan From: Markus Metz [mailto:markus.metz.gisw...@gmail.com] Sent: tirsdag 23. januar 2018 13.02 To: Stefan Blumentrath

Re: [GRASS-user] i.atcorr with Sentinel2

. Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Stefan Blumentrath Sent: torsdag 25. januar 2018 11.30 To: Markus Metz <markus.metz.gisw...@gmail.com> Cc: GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GRASS-user] i.atcorr with Senti

Re: [GRASS-user] i.atcorr with Sentinel2

> Let's get out 7.4.0 and then add the new S2A/B to 7.4.1. Otherwise we'll > never get it out... Fully understand! Stefan ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] i.atcorr with Sentinel2

[mailto:markus.metz.gisw...@gmail.com] Sent: torsdag 25. januar 2018 11.16 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GRASS-user] i.atcorr with Sentinel2 On Thu, Jan 25, 2018 at 10:51 AM, Stefan Blumentrath <stefan.blum

Re: [GRASS-user] i.atcorr with Sentinel2

From: Markus Metz [mailto:markus.metz.gisw...@gmail.com] Sent: torsdag 25. januar 2018 14.12 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GRASS-user] i.atcorr with Sentinel2 > Looks good to me, please submit to

Re: [GRASS-user] Alternative to r.median for GRASS 7.x?

Hi Nikos, Did you consider using r.univar (with a zones map, like v.rast.stats does: https://trac.osgeo.org/grass/browser/grass/branches/releasebranch_7_2/scripts/v.rast.stats/v.rast.stats.py#L238, just with colon as separator) and using the resulting table as input to r.recode

Re: [GRASS-user] Issue with addon r.vif in MS Windows GUI installations (stand-alone v. 7.2.2 and 7.0.5)

Hi Paulo and Helmut, Did you consider using cStringIO, if you need a file-object? That would avoid the temporary file and thus should be more efficient too. See attached diff (it is probably not necessary to remove the last line break though). Just a suggestion. Yet, there might be even more

Re: [GRASS-user] New AddOns for downloading and importing Sentinel products

Hi Martin, Very nice work! This will simplify some of my workflows significantly! One parameter I was missing was however "area_relation". Please find attached a diff, in case you agree that it would be a useful addition (the python script is successfully tested, though I did not check the html

Re: [GRASS-user] [GRASS-dev] New addon: i.pysptools.unmix

that i.spec.unmix understands. So the modules can be complementary... Cheers, Stefan -Original Message- From: Moritz Lennert [mailto:mlenn...@club.worldonline.be] Sent: torsdag 8. februar 2018 09.06 To: Stefan Blumentrath <stefan.blumentr...@nina.no>; grass-user grass-user (grass-user@lists.osg

[GRASS-user] New addon: i.pysptools.unmix

Dear all, I just committed a new addon (i.pysptools.unmix) which is a wrapper around the endmember extraction and spectral unmixing functionality in the pysptools python library [1]. Feedback will be gladly received! Cheers Stefan [1]: https://pypi.python.org/pypi/pysptools

[GRASS-user] raster map from coordinates in python

Dear all, I have a numpy array with x,y, z coordinates that I would like to write to a rater map. When I convert the array to a StringIO-object and feed it to r.in.xyz I get: OSError: [Errno 7] Argument list too long I checked the content of the StringIO object and it contains only three columns

Re: [GRASS-user] raster map from coordinates in python

StringIO can be replaced with BytesIO BTW, though I don`t know what difference the two make... Cheers Stefan From: grass-user [mailto:grass-user-boun...@lists.osgeo.org] On Behalf Of Stefan Blumentrath Sent: mandag 12. februar 2018 14.42 To: grass-user grass-user (grass-user@lists.osgeo.org) &

Re: [GRASS-user] raster map from coordinates in python

[mailto:n...@nikosalexandris.net] Sent: mandag 12. februar 2018 21.20 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: grass-user grass-user (grass-user@lists.osgeo.org) <grass-user@lists.osgeo.org> Subject: Re: [GRASS-user] raster map from coordinates in python * Stefan Blumentrath <s

Re: [GRASS-user] [GRASS-dev] Keeping GRASS/OTB/... algorithm in qgis processing

Hi, In general I would say that both sides (QGIS – GRASS) benefit from an integration like Processing or the GRASS plugin. QGIS gains algorithms, GRASS gains user base. And for the future, Rashads and Moritz proposal make indeed a lot of sense! The text descriptor files have been a real pain

Re: [GRASS-user] New CLI option --tmp-location in 7.5 to enhance --exec

Dear Pierre, Just in case you are not aware of it, GRASS and R integrate very nicely: https://grasswiki.osgeo.org/wiki/R_statistics/rgrass7 Cheers, Stefan -Original Message- From: grass-user On Behalf Of Pierre Roudier Sent: torsdag 16. august 2018 10:07 To: Vaclav Petras Cc: GRASS

[GRASS-user] New addon v.rast.bufferstats

Dear all, I just uploaded a new addon "v.rast.bufferstats" [1] that extracts different raster statistics in multiple buffers around vector geometries. It is looping over input geometries and thus not very performant with lots of input geometries. But it can be convenient for e.g. characterizing

Re: [GRASS-user] New addon v.rast.bufferstats

grass-user (grass-user@lists.osgeo.org) Subject: Re: [GRASS-user] New addon v.rast.bufferstats On Thu, 23 Aug 2018, Stefan Blumentrath wrote: > I just uploaded a new addon "v.rast.bufferstats" that extracts > different raster statistics in multiple buffers around vector > g

[GRASS-user] Open temporary position (1.11.2018 until the 1.11.2019) for a Scientist in spatial analyses and remote sensing in applied ecology

Dear all, One of our GIS/remote sensing specialists will be in maternity leave, and we therefore need a substitute in this position from the 1.11.2018 until the 1.11.2019. If you are either ecologist, geographer, environmental planner, (or have a similar education) with special interest in

[GRASS-user] 3-days intense course on timeseries and remote sensing using GRASS GIS, 24.09.2018 to 27.09.2018 at Studenterhytta, Oslo, some available places left

Dear all, There are some available places left at a 3-days intense workshop on GIS in Applied Ecology (but techniques would be applicable to other domains too) from 24.09.2018 to 27.09.2018 at Studenterhytta, Oslo. With full board provided and no other distraction than beautiful nature around,

Re: [GRASS-user] i.atcorr with Sentinel2

Hi Zofie, Markus M found some issues in my version of create_iwave.py. I am fixing them right now! Cheers Stefan From: Žofie Cimburová [mailto:zoficimbur...@gmail.com] Sent: onsdag 24. januar 2018 09.32 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: Markus Metz <markus.

Re: [GRASS-user] i.atcorr with Sentinel2

Thanks Daniel, I might come back to your offer! Cheers Stefan From: Daniel Victoria [mailto:daniel.victo...@gmail.com] Sent: tirsdag 23. januar 2018 15.04 To: Markus Metz <markus.metz.gisw...@gmail.com> Cc: Stefan Blumentrath <stefan.blumentr...@nina.no>; GRASS user list

Re: [GRASS-user] i.atcorr with Sentinel2

[markus.metz.gisw...@gmail.com] Gesendet: Dienstag, 23. Januar 2018 14:50 An: Stefan Blumentrath Cc: Markus Neteler; GRASS user list Betreff: Re: [GRASS-user] i.atcorr with Sentinel2 On Tue, Jan 23, 2018 at 2:19 PM, Stefan Blumentrath <stefan.blumentr...@nina.no<mailto:stefan.blumentr...@n

Re: [GRASS-user] i.atcorr with Sentinel2

with proper S2B data? Cheers Stefan From: Markus Metz [mailto:markus.metz.gisw...@gmail.com] Sent: tirsdag 23. januar 2018 15.31 To: Stefan Blumentrath <stefan.blumentr...@nina.no> Cc: Markus Neteler <nete...@osgeo.org>; GRASS user list <grass-user@lists.osgeo.org> Subject: Re: [GR

Re: [GRASS-user] Install GRASS stable and experimental in parallel

Hi Moritz, (warming this post up again ...). I see your point! And I am aware, that dependencies might be changed in development versions. QGIS has some nightly builds e.g. with ubuntugis dependencies. Maybe snap could be useful? There does not seem to be a snap for GRASS yet:

Re: [GRASS-user] Install GRASS stable and experimental in parallel

: Moritz Lennert <mlenn...@club.worldonline.be> Sent: Tuesday, March 13, 2018 10:06:57 AM To: Stefan Blumentrath; Markus Neteler Cc: GRASS user list Subject: Re: [GRASS-user] Install GRASS stable and experimental in parallel On 13/03/18 09:30, Stefan Blumentrath wrote: > Hi Moritz, >

Re: [GRASS-user] zonal statistics/metrics - beyond simple statistics

Hei Bernardo, Just for the record: I am currently working on something similar / related. First of all I would like to improve speed of v.rast.stats for multiple inputs: https://www.mail-archive.com/grass-dev@lists.osgeo.org/msg52562.html and https://trac.osgeo.org/grass/ticket/3523 Adding a

Re: [GRASS-user] zonal statistics/metrics - beyond simple statistics

not be required, and you should be able to use r.univar with zones or r.stats for all polygons at once… Cheers Stefan From: Bernardo Santos <bernardo_brand...@yahoo.com.br> Sent: onsdag 11. april 2018 20.59 To: Helmut Kudrnovsky <hel...@web.de>; grass-user@lists.osgeo.org; Stefan

Re: [GRASS-user] zonal statistics/metrics - beyond simple statistics

and...@yahoo.com.br> Sent: torsdag 12. april 2018 16.57 To: Helmut Kudrnovsky <hel...@web.de>; grass-user@lists.osgeo.org; Stefan Blumentrath <stefan.blumentr...@nina.no> Subject: Re: RE: [GRASS-user] zonal statistics/metrics - beyond simple statistics Hi Stephan, Some minutes before

Re: [GRASS-user] Need Help with speeding up v.import and reducing/removing null values from v.rast.stat results

Hei Mehrdad, If your buffers are overlapping, topology will become an issue, as Moritz pointed out. Johannes Radinger once wrote a workaround for a specific use case that might be of help. See [1]. No idea if it would be possible to come up with something more generic for v.rast.stats… In

Re: [GRASS-user] Need Help with speeding up v.import and reducing/removing null values from v.rast.stat results

... Cheers Stefan From: Markus Metz <markus.metz.gisw...@gmail.com> Sent: fredag 23. mars 2018 17.57 To: Mehrdad Varedi <var...@waterlix.com> Cc: Stefan Blumentrath <stefan.blumentr...@nina.no>; grass-user@lists.osgeo.org Subject: Re: [GRASS-user] Need Help with speeding up v.im

Re: [GRASS-user] r.category

the range parameter. That should fix the error message. Or do you have other issues as well? Cheers Stefan From: Frank David Sent: fredag 12. oktober 2018 15:17 To: Stefan Blumentrath ; grass-user@lists.osgeo.org Subject: Re: [GRASS-user] r.category Hi Stefan, Thanks for your reply. But I did

Re: [GRASS-user] d.rast in python script

Hi Frank, I think Laurents solution is for rendering maps to file/image. Do I understand you correctly, that you are looking for a solution for adding maps to the currently active map display (and respective Layer manager)? I have not found a documentation and would be interested too. I assume

Re: [GRASS-user] Raster grow within area boundaries

Hi Michael, You could use r.cost with a cost map where all data outside area boundaries is NULL and rest is 1 (or resolution)… https://grass.osgeo.org/grass76/manuals/r.cost.html Cheers Stefan From: grass-user On Behalf Of Michel Wortmann Sent: fredag 19. oktober 2018 15:48 To: GRASS user

Re: [GRASS-user] g.gui.tplot opens plot when exporting csv from cli

Hi Margherita, Try t.rast.what: https://grass.osgeo.org/grass76/manuals/t.rast.what.html Cheers, Stefan From: grass-user On Behalf Of Margherita Di Leo Sent: fredag 12. oktober 2018 10:40 To: GRASS user list Subject: [GRASS-user] g.gui.tplot opens plot when exporting csv from cli Hi, I'm

Re: [GRASS-user] r.category

Hi Frank, You need to specify the range option as range=0,8 (instead of range=0-8 as you did). Cheers Stefan -Original Message- From: grass-user On Behalf Of Frank David Sent: fredag 12. oktober 2018 14:24 To: grass-user@lists.osgeo.org Subject: [GRASS-user] r.category Hello grass

Re: [GRASS-user] zonal statistics for multiple areas

Hi Alessandro, You could try v.rast.bufferstats [1], if you do not have hundrets of thousands of points…. If the buffers don`t overlap, you could use v.rast.stats [2] from the upcoming GRASS 7.6 release, that will allow multiple raster input… Otherwise have a look at the general introduction

Re: [GRASS-user] partial vector copy to smaller territory

Hei Frank, Did you try the “spatial” option in v.in.ogr (or the r-flag) (if your data is in a shape-file to start with): https://grass.osgeo.org/grass74/manuals/v.in.ogr.html ? And is v.clip slower than v.overlay (that could be used as well)? Cheers Stefan From: grass-user On Behalf Of Frank

Re: [GRASS-user] remove sliver polygons and dissolving adjacent ones

Hei Giuseppe, For your first task use v.clean: https://grass.osgeo.org/grass76/manuals/v.clean.html For the second v.dissolve: https://grass.osgeo.org/grass76/manuals/v.dissolve.html Cheers Stefan From: grass-user On Behalf Of Giuseppe Cillis Sent: torsdag 1. november 2018 10:39 To:

Re: [GRASS-user] append data after a v.in.ascii import

Hi, Try: v.patch -a https://grass.osgeo.org/grass76/manuals/v.patch.html (assuming attribute tables are equal). Cheers Stefan -Original Message- From: grass-user On Behalf Of Frank David Sent: fredag 26. oktober 2018 11:39 To: grass-user@lists.osgeo.org Subject: [GRASS-user] append

Re: [GRASS-user] d.rast in python script

d key-name for the option in your script with a line like this: #% key: my_option_key_name Cheers, Stefan From: Frank David Sent: onsdag 24. oktober 2018 10:48 To: Stefan Blumentrath ; Nikos Alexandris Cc: Laurent C. ; GRASS user list ; GRASS developers list (grass-...@lists.osgeo.org) Subject: Re: [

Re: [GRASS-user] d.rast in python script

loper list (thus I put grass-dev in CC). Cheers Stefan From: Frank David Sent: onsdag 24. oktober 2018 08:26 To: Nikos Alexandris Cc: Stefan Blumentrath ; Laurent C. ; GRASS user list Subject: Re: [GRASS-user] d.rast in python script Le 23/10/2018 à 23:26, Nikos Alexandris a écrit : * F

Re: [GRASS-user] d.rast in python script

/grass74/manuals/parser_standard_options.html From: Frank David Sent: onsdag 24. oktober 2018 09:35 To: Stefan Blumentrath ; Nikos Alexandris Cc: Laurent C. ; GRASS user list ; GRASS developers list (grass-...@lists.osgeo.org) Subject: Re: [GRASS-user] d.rast in python script Hi Stephan, Thank

Re: [GRASS-user] Help Puerto Rico Crowdsource GIS Data

You could also have a look at GeoSHAPE: http://geoshape.org/ However, there are plenty of tools out there, like: https://geopaparazzi.github.io/geopaparazzi/ Cheers Stefan -Original Message- From: grass-user On Behalf Of Moritz Lennert Sent: mandag 12. november 2018 08:18 To:

[GRASS-user] New addon: v.what.strds.timestamp

Dear all, Just want to inform you that I recently committed a new addon named v.what.strds.timestamp, which is a relatively simple wrapper around v.what.rast: https://grass.osgeo.org/grass74/manuals/addons/v.what.strds.timestamp.html Purpose of the module is to match point data that have a

Re: [GRASS-user] Raster Attribute Tables

Hi Chris, Did you try the table option in r.in.gdal: https://grass.osgeo.org/grass74/manuals/r.in.gdal.html Otherwise you could import the raster map and then the attribute table with db.in.ogr. From the table you could then build reclass rules for r.reclass. (Not tested) Cheers Stefan

Re: [GRASS-user] Using g.tempfile

Temp files are normally stored in the mapset (e.g. /grassdb/location/mapset/.tmp/YOURCOMPUTER/12345.0) It can be partly controlled where tempfiles are stored using environment variables: https://grass.osgeo.org/grass74/manuals/variables.html https://grass.osgeo.org/grass74/manuals/g.gisenv.html

Re: [GRASS-user] Sentinel2- flooding

Hi Shane, Following up on robertos answer: You could try the Normalized Difference Water Index (NDWI) which is computed for S-2 as: ndwi = (B08-B11)/(B08+B11) or alternatively ndwi = (B03 - B08) / (B03 + B08) See e.g.:

[GRASS-user] Get values from raster map following a direction map for n steps

Dear all, In an r.mapcalc expression, I would like to trace values along a direction map for 1 to n steps (e.g. looking 4 steps ahead along a path or stream or along a given direction (degrees or 45degrees). I tried using the neighborhood modifier within an eval function in r.mapcalc.

Re: [GRASS-user] Sentinel 1 in GRASS

11:33 To: Stefan Blumentrath Cc: GRASS user list Subject: Re: [GRASS-user] Sentinel 1 in GRASS Stefan, I overlooked to mention that my aim is to explore the capabilities for detecting areas of deforestation. Thanks for sharing your workflow! It will surely be useful for me. Kind regards

Re: [GRASS-user] Sentinel 1 in GRASS

Hi Margherita, There are a lot of very different possible workflows with S-1, depending on what you are aiming at... For terrestrial mapping applications, feel free to take inspiration from here (finishing off a report on the project right now):

[GRASS-user] 2-years postdoctoral position in species distribution modeling at NINA; deadline 1 February 2019

Dear all, Just want to inform you that there is a vacant GIS-related position at NINA in Trondheim. NINA is seeking applicants for a 2-year postdoctoral fellowship to join a research consortium for species distribution modeling of birds in northern Europe. The Future Bird Scenarios project is

Re: [GRASS-user] help with git migration

Hi, DBMI seems to be missing... I guess that could be useful as well... Cheers Stefan -Original Message- From: grass-user On Behalf Of Martin Landa Sent: mandag 1. april 2019 11:24 To: GRASS users list ; GRASS developers list Subject: Re: [GRASS-user] help with git migration Hi, út

Re: [GRASS-user] merging small areas but keep raster categories

Hi Ken, Did you try the rmarea method for r.reclass.area? That converts to vector, runs v.clean with rmarea and then converts back to raster (if I understood correctly... Cheers, Stefan From: grass-user on behalf of Ken Mankoff Sent: Saturday, March 9, 2019

Re: [GRASS-user] sharing GRASS mapsets

Hi Laura, There are several options. One option would be to subdivide “ENVIROMENTAL_COVARIATES” into e.g. topics. In my organisation (also environmental research) we organized mapsets with prefixes (g_ for mapsets of general interest, gt_ for time series, p_ for projects, u_ for users).

Re: [GRASS-user] sample a strds at specific locations (areas)

Ciao Madi, Vero, Starting with GRASS 7.6, also centroids are used to get the raster representation of your area vector map. That increases the likelihood of smaller areas to be rasterized. Increasing the resolution of the current region alone does not help, because v.rast.stats temporarily

Re: [GRASS-user] sample a strds at specific locations (areas)

. februar 2019 10:37 To: Stefan Blumentrath Cc: Veronica Andreo ; grass-user Subject: Re: [GRASS-user] sample a strds at specific locations (areas) Hi, thank you for your replies. To give a little more context: I selected my polygon areas to be > 0.5 ha each (this would be 5 mq if

Re: [GRASS-user] Import grass.script

Hi, Python 3 support is planned for GRASS 7.8... Furthermore, you might be interested in the grass-session library on pypi... Cheers, Stefan From: grass-user on behalf of Shane Carey Sent: Sunday, April 7, 2019 1:35:11 AM To: grass-user grass-user Subject:

Re: [GRASS-user] get raster name in r.series min/max

Hei Vero, Use min_raster and max_for raster method in r.series... Did you try that? Cheers Stefan From: grass-user on behalf of Veronica Andreo Sent: Sunday, May 26, 2019 6:02:47 AM To: Frank David Cc: grass-user Subject: Re: [GRASS-user] get raster name in

Re: [GRASS-user] remove small islands from vector areas

Hi Robert, Did you have a look at v.clean: https://grass.osgeo.org/grass77/manuals/v.clean.html with tool=rmarea Cheers Stefan -Original Message- From: grass-user On Behalf Of Robert Nuske Sent: fredag 21. juni 2019 12:33 To: grass-user Subject: [GRASS-user] remove small islands from

Re: [GRASS-user] Fwd: Re: remove small islands from vector areas

2019 13:49 To: grass-user Subject: [GRASS-user] Fwd: Re: remove small islands from vector areas Weitergeleitete Nachricht Betreff: Re: [GRASS-user] remove small islands from vector areas Datum: Fri, 21 Jun 2019 13:47:52 +0200 Von: Robert Nuske An: Stefan Blumentrath Hi

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