Hi,
I'm trying to compute the maximum number of consecutive days according
to a given rule (eg: maximum of consecutive days with precipitation >
0 mm) on a STRDS, but I'm getting stuck with the syntax.
Is that something possible to do within GRASS's temporal framework?
Kind regards,
Pierre
16 August 2018 at 20:37, Stefan Blumentrath
wrote:
> 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-use
Thanks Vaclav,
Looks like a great enhancement. It should make it easy to wrap it into
a R package for example.
One question -- is that possible to refer to the input dataset in the
script called
by --exec? Something like:
grass --tmp-location ~/data/elevation.tiff --exec "r.param.scale
Hi,
I have a high quality vector dataset describing the river flows (and
order) at the national level, and I would like to use this dataset to
compute the elevation above stream and distance from stream (typically
as an output from r.stream.distance).
Is there any way to do this? I guess it
Thanks Moritz,
Indeed, I ended up creating mapsets on the fly using grass72 -c, and
processing tiles in their respective mapsets.
On 12 May 2017 at 18:18, Moritz Lennert <mlenn...@club.worldonline.be>
wrote:
>
>
> Le 11 mai 2017 23:30:28 GMT+02:00, Pierre Roudier <
> pie
neck (e.g. slow
> network connection to the data)).
> Care has to be taken with the region settings, though.
>
> See e.g.:
> https://grasswiki.osgeo.org/wiki/Parallel_GRASS_jobs#Working_with_tiles
>
> Cheers
> Stefan
>
> ____
> Von
Hi,
I am trying to compute the 95th percentile of a massive grid (12+
million pixels) for a massive number of layers (~2500 layers).
I am doing the aggregation using r.series on our cluster running grass
7.2, but of course it takes ages (21% there after 3 days).
- I tried to tile the process,
Very useful resource Martin.
FWIW, the translation of the page is very usable for non-Czech speakers:
http://translate.google.com/translate?sl=cstl=enjs=nprev=_thl=enie=UTF-8u=http%3A%2F%2Fgeo.fsv.cvut.cz%2Fgwiki%2F153ZODH_%2F_15._cvi%25C4%258Den%25C3%25ADact=url
Pierre
2014-01-29 Martin Landa
Moritz,
Thanks heaps for the script. It's really is useful and will facilitate
the adoption of i.segment. It certainly would be a nice addition to
the wiki page.
Unfortunately I can't comment too much on this, as my object-based
classification projects are on hold, but I'll try to give that a
Mohammed,
For segmentation please get in touch with Eric Momsen who worked on
i.segment recently, with great success. We were looking forward to add the
mean shift option. Keep also Markus Metz in the loop - he was the mentor of
the project and worked on i.segment.xl.
Also, make sure you check
Hi all,
Not sure if my vote counts, but I'd like to add my +1 here. I had the
opportunity to exchange emails with Moritz during Eric's GSoC project,
and certainly appreciated his contributions and his very sound
understanding of the GRASS GIS project as a whole.
Pierre
2012/10/31 Eric Momsen
Alberto,
Your field separator is set to empty string (fs=), wouldn't that be
the problem?
Cheers,
P_
2012/7/11 Alberto Pettazzi alberto.petta...@meteogalicia.es:
Dear all,
I was using GRASS version 6.3.0 and everything worked fine. Now I installed
6.4.1 on a brand new server and I am
Thanks for your answers,
For GRASS 6, see in Addons grass_create_location.sh:
http://trac.osgeo.org/grass/browser/grass-addons/general/grass_create_location
I did saw this add-on, but isn't it generating a new location only (ie
not a new, entire GRASSDATA)?
Pierre
--
Scientist
Landcare
Thanks for the clarification Markus et al., it works indeed,
Pierre
2011/11/8 Markus Neteler nete...@osgeo.org:
On Mon, Nov 7, 2011 at 8:46 PM, Pierre Roudier pierre.roud...@gmail.com
wrote:
Thanks for your answers,
For GRASS 6, see in Addons grass_create_location.sh:
http
Hi list,
I'm trying to use GRASS 6.4.2 rc1 on a cluster, where each session is
launched on a TMP space. As a consequence, I cannot setup a GRASSDATA
db once for all - I need to upload the spatial data I want to work
with, create a tmp grassdata/location/mapset in a script, then launch
my GIS with
Thank you very much Michael,
I just downloaded the script - will give it a try ASAP. This seems to
be a very comprehensive set of functions, I do encourage all users to
give it a closer look.
Cheers,
Pierre
2011/9/23 rabo...@supagro.inra.fr:
Dear M Roudier,
maybe one of my development can
this is just a wish!
Thanks for the time you spent looking into my problem, this is much
appreciated as usual,
Pierre
2011/9/22 Markus Metz markus.metz.gisw...@googlemail.com:
On Thu, Sep 22, 2011 at 5:26 AM, Pierre Roudier
pierre.roud...@gmail.com wrote:
BTW I confirm I got similar problems
LOCATION: NZTM2000 MAPSET: BH USER: roudierp DATE: Thu Sep 15 17:31:45 2011
[Raster MASK present]
Cheers,
Pierre
2011/9/21 Markus Metz markus.metz.gisw...@googlemail.com:
On Wed, Sep 21, 2011 at 12:51 AM, Pierre Roudier
pierre.roud...@gmail.com wrote:
Markus,
Sorry for this late reply as I
BTW I confirm I got similar problems with the 6.4 series,
Pierre
2011/9/22 Pierre Roudier pierre.roud...@gmail.com:
Thanks Markus,
Here's an archive containing the input vector layer, along with
v.clean output:
https://df.bestgrid.org/quickshare/fb0bb3af778c8a03/vectors.tar.gz
Here's
, 2011 at 6:28 AM, Pierre Roudier
pierre.roud...@gmail.com wrote:
Dear list,
I got a problem as I'm trying to remove small areas of a vector layer
using v.clean with the rmarea tool: some of these small areas that are
on the boundary of the layer are getting erased rather than being
merged
Dear list,
I got a problem as I'm trying to remove small areas of a vector layer
using v.clean with the rmarea tool: some of these small areas that are
on the boundary of the layer are getting erased rather than being
merged with the closest polygon.
Is that an expected behaviour?
Cheers,
Hi Andry,
Your seem to be running an unstable and rather old version of GRASS
(GRASS 6.4.0+42329). First thing you should do is to update to the
newest stable version (6.4.1).
How did you install it? If from Synaptic, from which repository?
Pierre
2011/7/6 andry rustanto rustanto...@gmail.com:
,
Pierre
2011/7/6 andry rustanto rustanto...@gmail.com:
Hi Pierre,
Thanks for your reply, yes i installed it from synaptic from local
repository in Indonesia. How can I upgrade my GRASS into version 6.4.1 ?
Many Thanks,
Andry
On 6 July 2011 11:34, Pierre Roudier pierre.roud...@gmail.com
Andry,
Note that the last stable version of GRASS is actually in
UbuntuGIS-unstable:
https://launchpad.net/~ubuntugis/+archive/ubuntugis-unstable
Not sure in what extent this repo is experimental or not,
Pierre
2011/7/6 Pierre Roudier pierre.roud...@gmail.com:
Andry,
Yes, I think I've
, it should now compile without changing any
files in grass_trunk/include.
Markus M
Cheers
Daniel
On Tue, Jun 21, 2011 at 4:03 AM, Pierre Roudier
pierre.roud...@gmail.com wrote:
I had the problem a few weeks ago.
In file
/usr/local/src/grass7-svn/grass_trunk/dist.x86_64-unknown-linux
I had the problem a few weeks ago.
In file
/usr/local/src/grass7-svn/grass_trunk/dist.x86_64-unknown-linux-gnu/include/grass/gprojects.h,
couldn't find ogr_srs_api.h
I edited
/usr/local/src/grass_trunk/dist.x86_64-unknown-linux-gnu/include/grass/gprojects.h
and turned ogr_srs_api.h to
Public Works Division, Shimane Prefecture, Japan
From: Pierre Roudier pierre.roud...@gmail.com
To: GRASS grass-user@lists.osgeo.org
Sent: Tuesday, June 7, 2011 2:23 PM
Subject: [GRASS-user] v.surf.rst vs r.slope.aspect
Dear list,
For a project, I need
Hi Moritz,
When you say that there are differences, which DEM did you use with
r.slope.aspect ? The one create by the v.surf.rst run ?
Yes - for the sake of the test, I generated a DEM and slope using
v.surf.rst. Then I used r.slope.aspect on that DEM, and compared its
output with the
Hi,
I've been working with v.surf.rst on large datasets, and I can
appreciate its scalability when using segmented processing.
However, the wiki page [0] is not very clear on that topic, so I ran a
few (very informal) tests for different values of segmax and npmin on
a subregion of my study area
Dear list,
For a project, I need to derive parameters like slope and aspect from
a high-res DEM from a LiDAR point cloud.
There are several way to do this in GRASS:
- v.surf.rst
- r.slope.aspect
- r.param.scale is a bit special and, I think, has a different purpose.
How do RST and
), .fun =
make_map, grid = grid)
Again, untested and probably buggy. Probably others can do better and
quicker with a bit of awk magic.
Hope this helps,
Pierre
Cheers,
Bulent
On Sun, May 29, 2011 at 8:19 PM, Pierre Roudier pierre.roud...@gmail.com
wrote:
No you probably don't need to do
you again,
Bulent
On Sun, May 29, 2011 at 11:14 PM, Pierre Roudier pierre.roud...@gmail.com
wrote:
Bulent,
Thank you for taking time and helping out. I attached a short version of
data in (.xls) format. The file contains climate model results between 0
and
800 BP, for every century
Hi Hamish,
Pierre, you may be interested in looking at the v.kridge(.py)
module, behind the scenes it calls R from GRASS to do the
interpolation. Requires python-rpy2 the GRASS-R cran package
to be installed, and a number of other support packages it will
tell you about. (I'm having a
Hi list,
Sorry to resurrect a reasonably old topic (following my mail), but I
have two questions on the r.param.scale module:
1 - I share Jasiewicz's concerns, the formula do not match the
litterature I got [0]
2 - My understanding is that the plan curvature (planc) can be
computed, but not the
Hi Bulent,
No problem, but please always copy the list, so that:
- others can offer an alternative solution (as I said, I'm highly
biased towards R)
- our discussion can be searchable by everybody for further reference
I have spent a good portion of today working on this project and I got as
Hi Bulent,
My first idea - but I may be biased as I come from the R world - would
be to make the imports steps of your data from R. R has a XLS
reader(but I usually find it safer to first export your spreadsheet to
a CSV file).
Hope this helps,
Pierre
2011/5/30 Bulent Arikan
Hi Markus,
Just compiled again liblas svn trunk, everything is working as expected so far.
Thanks heaps for that new functionality, this is really very useful.
Pierre
2011/5/25 Markus Metz markus.metz.gisw...@googlemail.com:
Hi all,
GRASS 7 has a new module v.in.lidar for importing LiDAR
Kia ora David,
Fire up a terminal, and type grass, then enter. This is launching
Grass, and a GUI will show up. You will then have to specify a path to
store your GRASS data, and define a location (ie a coordinate system +
a geographic extent) for your first project.
One of the great feature of
Hi list,
Does anyone managed to use g.extension with a local copy of the SVN
repository? I have problems retrieving code from the online repo using
g.extension (see ticket #1341), but I can make a svn checkout.
Moreover, that could come handy when a network connection is not
available.
Something
Kia ora Hamish,
note that using development code for production work is asking
for trouble..
I'm using the 7 version as I'm testing the WPS bridge for another
project. I got a 6.4.1 version installed if I need more stability (but
so far, so good with the dev version).
Map Display 1: Zoom
Hi list,
I'm using the latest GRASS 7 svn update, and I wonder if it there is
an option to synchronize two displays?
Indeed, I can open as many displays as I want (FileMap display New)
but what would be great, to compare layers, would be to force each
display window to show the same spatial
Dear list,
I got a polygon layer, in which there are some holes.
Is there a way to control the elimination of those holes, ie
eliminates holes smaller than a given size, and keep the others (that
are considered as significant by the user).
Cheers,
Pierre
--
Scientist
Landcare Research, New
HI,
I tried again with the koordinates shapefile. I did succeed that time
- corrupted shapefile I suppose.
Thanks for the help,
Pierre
2010/11/30 Markus Metz markus.metz.gisw...@googlemail.com:
Pierre Roudier wrote:
Dear all,
I tried the very same thing on the stable version of GRASS (6.4
Yes, I can confirm that. I don't have any menu entry neither on OpenSuse.
Pierre
2010/12/2 Giovanni Manghi giovanni.man...@gmail.com:
Hi,
do not expect having a shortcut on the desktop after installing the
program. Grass already installs its menu entry on most of the desktop/window
Hi Nick,
Just fire up a terminal and just type :
grass
HTH,
Pierre
2010/12/1 remoray remo...@optusnet.com.au:
Hi all,
I'm running debian squeeze, and installed grass via synaptic.
It says it is installed okay, but I can't find it in the gnome menu.
Any hints?
Nick
consumption becomes much bigger (maximum
actually - 6.2GB+2Gb swap) and the process gets killed.
Any pointers would be much appreciated. Otherwise, maybe I should open
a bug for that?
Cheers,
Pierre
2010/11/28 Pierre Roudier pierre.roud...@gmail.com:
Thanks for your answers. Yes, this is a 64bits
Thanks for your answers. Yes, this is a 64bits OS.
2010/11/27 Markus Metz markus.metz.gisw...@googlemail.com:
On Fri, Nov 26, 2010 at 3:14 AM, Pierre Roudier
pierre.roud...@gmail.com wrote:
Dear list,
I am trying to load a pretty big shapefile on GRASS (6Mb +, 211621
features) using
Dear list,
I am trying to load a pretty big shapefile on GRASS (6Mb +, 211621
features) using v.in.ogr, but each attempt fails at the 'break
boundaries'' stage (at 98%!):
GRASS 7.0.svn (NZTM2000):~ v.in.ogr
dsn=~/Documents/DATA/LCDB2/ni_nzmg.shp out=ni_lcdb2 --o
Projection of input dataset and
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