[GRASS-user] FYI - good weather resource
This is for users who need weather data - I have found it a pain in the neck to get data for unfamiliar countries! http://iri.ldeo.columbia.edu/ Cheers all, Richard C ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Random points within a polygon?
On Thursday 18 March 2010, Hamish wrote: > Gary wrote: > > I want to use v.random but I noticed it puts random points > > within the region, can I limit this to a polygon? > > Yes, see the v.random.cover addon script from wiki addons. > > Also there are many options available from the R statistics "sp" > library. (see the R page in the grass wiki, once loaded do > library(sp); demo(gallery). > > And of course the "spgrass6" R-GRASS interface to transfer data. > Here is an example of exactly what Hamish suggested: http://casoilresource.lawr.ucdavis.edu/drupal/node/644 Note that you can substitute readOGR() with readVECT6() to read in a grass vector file. Cheers, Dylan -- Dylan Beaudette Soil Resource Laboratory http://casoilresource.lawr.ucdavis.edu/ University of California at Davis 530.754.7341 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] make command (install add on)
Hi, I want to test the interesting net.analyze addons (mostly because of v.net.distance). I've downloaded it but now not able to install it... :-( Following the instruction first I changed the directory to the path where the downloaded addons are saved: cd Documents/temp/net.analyze Then I tried the make command: make MODULE_TOPDIR=/Applications/GRASS-6.4.app/Contents/MacOS/ As a result I get the an error: make: *** Makefile: Is a directory. Stop. Does someone know what this could mean and what I'm doing wrong? Tusend tack, schorschli -- View this message in context: http://n2.nabble.com/make-command-install-add-on-tp4764072p4764072.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Question about the use of d.vect.thematic
Hamish, I made the code changes in the scripts (v.colors & d.vect.thematic), adding: && [ "$NCOLUMN_TYPE" != "REAL" ] in the tests and that worked perfectly. Thanks for your help!! Tom Hamish wrote: Thomas wrote: I am trying to use d.vect.thematic to create a thematic map where the vector polygons are filled with a color dependent on an attribute value, swe, which is of type 'real'. I am using sqlite as the db driver. The swe attribute was added to my vector map using v.db.join, which worked fine. I can query the map and see that the swe values are correct. However, when I use d.vect.thematic, I get the following error: Column is of type which is not numeric. probable bug in d.vect.thematic which only know integer and double precision. I don't understand; I guess there are subtle nuances with these data type considerations which I don't yet appreciate. When I created my sqlite db and table, should I have read-in the data as a different type? If so, what? my advice if you have less than 30,000 area features is to use the new v.colors scripts to add a new GRASSRGB column with colors, then use 'd.vect -a'. Maybe it is possible to use d.vect's new zcolor= option, but that is more for points data than areas. of course v.colors suffers from the same lack of imagination and so will need an edit to work with "REAL" types. look for a line like this: (v.colors, but d.vect.thematic is similar) elif [ "$NCOLUMN_TYPE" != "INTEGER" ] && [ "$NCOLUMN_TYPE" != "DOUBLE PRECISION" ] ; then g.message -e "Column <$GIS_OPT_COLUMN> is not numeric" exit 1 fi and try adding && [ "$NCOLUMN_TYPE" != "REAL" ] to the test. (edit to match local conditions) Hamish -- Thomas E Adams National Weather Service Ohio River Forecast Center 1901 South State Route 134 Wilmington, OH 45177 EMAIL: thomas.ad...@noaa.gov VOICE: 937-383-0528 FAX:937-383-0033 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] High resolution dem
> > Frank Broniewski wrote: > >> My region is 17.000 x 13.000 cells wide (5m horiz. > >> resolution). So my Hamish: > > that is getting big, but shouldn't be too bad. except > > perhaps for v.surf.rst (and r.fillnulls which uses it). > > > > hmmm... I wonder if it would speed up r.fillnulls & save > > lots of memory if we added the no-table and no-topology -b > > and -z flags to the r.to.vect step in it? Markus: > This requires that v.info reads without topology. I have > locally backported the changed from MarkusM and modified > r.fillnulls. > Result: as slow/fast as before. how about memory usage? > A real alternative is to use v.surf.bspline rather than > v.surf.rst which will be way faster. I guess we should start by offering that as a flag in r.fillnulls. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] FOSS4G2010 Press Release #6, Barcelona, Sept. 2010
http://wiki.osgeo.org/wiki/FOSS4G_2010_Press_Release_6 Call for Abstracts (Update March 2010) === We are pleased to announce that the deadline for Abstract submissions (General and Academic Sessions) has been postponed to April 15th, 2010!! General Sessions - FOSS4G presentations are 25 minute talks, with a 5 minute question and answer session at the end. Presentations cover aspects of the use or development of open source geospatial software. Anyone can can submit a presentation proposal and take part in the conference as a speaker. For more information, see http://2010.foss4g.org/presentations.php Submission deadline (Abstract for the General Sessions) - Apr, 15th, 2010 Academic Sessions - -- The FOSS4G 2010 academic track aims to bringing together researchers, developers, users and practitioners carrying out research and development in the geospatial and the free and open source fields and willing to share original and recent research developments and experiences. For more information, see http://2010.foss4g.org/presentations_track.php Submission deadline (Abstract for the Academic Track) - Apr, 15th, 2010 Submission deadline (Full Paper for the Academic Track) - Jul, 15th, 2010 Upcoming Milestones - --- * 15 Apr 2010, Abstract submission deadline (General Sessions and Academic Sessions) * 15 May 2010, Presenters notified of acceptance for talks * 15 Jun 2010, Author/Early registration deadline * 15 Jul 2010 Full article submission deadline for Academic Sessions * Aug 2010, Completed program available * 6-7 Sep 2010, FOSS4G Workshops * 7-9 Sep 2010, FOSS4G Presentations and Tutorials * 10 Sep 2010, FOSS4G Code Sprint Best regards, Lluís Vicens FOSS4G2010 LOC -- Lluís Vicens Franquesa Projectes i Formació ll...@sigte.udg.edu www.sigte.udg.edu ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
