Re: [GRASS-user] loss of bash aliases
Hamish schrieb:
Dylan:
I have the following line in my .bashrc:
alias l='ls -lh --color=auto'
After I start a GRASS session this alias seems to go away. Is
there anyway to respect user customization (i.e. .bashrc)
when initializing GRASS?
Or is this a user-related error?
GRASS's Init.sh does special tricks with $HOME and $bashrc so you can
save your command history, etc., for each mapset.
Then it tries to do:
echo test -r ~/.alias . ~/.alias $bashrc
but at that point $HOME is already redefined so the real
/home/you/.alias is not the one it looks for there?
Fix with s/~/$USERHOME/ ??
(that bit of the code is a mess, I don't like to touch it)
(history file better handled with $HISTFILE ? see g.mapset warning)
Eric:
What happens if you copy your alias into ~/.grass.bashrc?
yes that works.
FWIW, my .grass.bashrc has:
.. /home/hamish/.alias
export HISTSIZE=3000
# first GRASS instance gets set a low priority (because we can)
NUMGRASSES=`pgrep -c Init.sh`
if [ $NUMGRASSES -le 1 ] ; then
renice +17 -p $$
else
NICENESS=`echo $NUMGRASSES | awk '{printf(%0.f, 20 / $1)}'`
renice +$NICENESS -p $$
fi
Hamish
Hamish,
why does the test refer to .alias? As I wrote in the attached mail the
bash-alias-file should be .bash_aliases
And what I don't understand either, not even if in the .grass.bashrc is
defined
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
the aliases work in grass.
... oh now I understand, do I? Do I have to change this entry in
if [ -f $USERHOME/.bash_aliases ]; then
. $USERHOME/.bash_aliases
fi
???
No... does not work ;o(
I have this solution to change the Init.sh (see below). But it isn't a
good one. I hope for a better one with only one alias-definition-file.
Greets to the other side of the globe
cheers
Philipp
Philipp Steigenberger wrote at 03/04/08 11:10
Subject: [GRASS-user] .bash_aliases doesn't work in GRASS Start
without g.gui
Hi
I noticed that my .bash_aliases is not affected when GRASS starts. I
have a .grass.bashrc which is almost the same as the regular one. I want
to have only one aliases-file, therefore I don't want to copy the aliases
in the .grass.bashrc.
in the Init.sh in line 939 the test is
echo test -r ~/.alias . ~/.alias $bashrc
but the aliases files name which the .bashrc suggests to use is .bash_aliases
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
My solution to get all my aliases is to change the Init.sh every time I
update my svn in line 948 where I insert the following lines:
if [ -r $USERHOME/.bash_aliases ]
then
cat $USERHOME/.bash_aliases $bashrc
fi
Is there another way?
Maybe somebody may change the Init.sh for better acting
[...]
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[GRASS-user] (no subject)
Hello and thanks for your input Is it possible to draw a Profile based on a digital hight model and a selectet line? Sincerely Lukas -- -- Arbeit: Tel: +41 44 632 55 98 ETH Zürich Institut für terrestrische Ökosysteme Professur Waldökologie Universitätstrasse 22 CH-8092 Zürich privat: Lukas Rohrer c/o Dietschi Hohlstrasse 212 8004 Zürich +41 43 322 03 26 +41 78 624 93 20 [EMAIL PROTECTED] May the forest be with you! ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] (no subject)
Lukas Rohrer wrote:
Hello and thanks for your input
Is it possible to draw a Profile based on a digital hight model and a
selectet line?
Sincerely Lukas
--
--
Arbeit:
Tel: +41 44 632 55 98
ETH Zürich
Institut für terrestrische Ökosysteme
Professur Waldökologie
Universitätstrasse 22
CH-8092 Zürich
privat:
Lukas Rohrer
c/o Dietschi
Hohlstrasse 212
8004 Zürich
+41 43 322 03 26
+41 78 624 93 20
[EMAIL PROTECTED]
May the forest be with you!
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We made a script that draw a profile dem based tracking a line
The script export the profile in .dxf format with distances and level
labels and write a text file with the profile metadata
There are some errors and bugs because it's in development.
Andrea Ricci, Pierpaolo Chiraz
gfosservices.it
#!/bin/bash
#
#
#
# MODULE: r.section for GRASS 6.0 (GRASS Shell Script)
# AUTHOR(S):Andrea Ricci, Pierpaolo Chiraz
#
# PURPOSE: Creates dxf territorial profile and dxf export; dem based
# COPYRIGHT: (C) 2007 by the GFOSSERVICES
# REQUIREMENTS:
#
# This program is free software under the GNU General Public
# License (=v2). Read the file COPYING that comes with GRASS
# for details.
#
###
#OUT=/tmp/out_$$
#set -m
#mkfifo $OUT
#%Module
#% description: Create ascii_dxf profile from a raster dem.
#%End
#%option
#% key: cella
#% type: integer
#% answer: 10
#% description: (raster cells resolution)
#% required : yes
#%end
#%option
#% key: DEM
#% type: string
#% gisprompt: old,cell,raster
#% description: (input raster map)
#% required : yes
#%end
#%option
#% key: OUT2
#% type: string
#% answer: ascii
#% description: (Nome del file ascii di output)
#% required : yes
#%end
#%option
#% key: grass_vect
#% type: string
#% gisprompt: new,vector,vector
#% answer: sezione1
#% description: (Nome del file vettoriale di Grass)
#% required : yes
#%end
#%option
#% key: dxf_vect
#% type: string
#% answer: sezione1
#% description: (Nome del file .dxf)
#% required : yes
#%end
#%option
#% key: percorso_dxf
#% type: string
#% description: (Percorso di salvataggio del file dxf)
#% gisprompt: new_file,file,output
#% required : yes
#%end
#%option
#% key: fattore
#% type: integer
#% answer: 1
#% description: (fattore di esagerazione delle quote)
#% required : no
#%end
#%option
#% key: griglia
#% type: integer
#% answer: 100
#% description: (passo della griglia x,y)
#% required : no
#%end
#-Input testuale metadato-
#%option
#% key: meta
#% type: string
#% answer:
#% description: (file con metadati della sezione)
#% gisprompt: new_file,file,input
#% required : no
#%end
if [ -z $GISBASE ] ; then
echo You must be in GRASS GIS to run this program.
exit 1
fi
if [ $1 != @ARGS_PARSED@ ] ; then
exec g.parser $0 $@
fi
DEM=$GIS_OPT_DEM
OUT2=$GIS_OPT_OUT2
grass_vect=$GIS_OPT_GRASS_VECT
dxf_vect=$GIS_OPT_DXF_VECT
percorso_dxf=$GIS_OPT_PERCORSO_DXF
cella=$GIS_OPT_CELLA
OUT=$GIS_OPT_OUT
meta=$GIS_OPT_META
fattore=$GIS_OPT_FATTORE
griglia=$GIS_OPT_GRIGLIA
if [ -z $cella ] ; then
cella=1;echo -n Risoluzione del raster (Dimensioni del lato della cella)=
$cella metri
fi
g.region res=$cella
#Punti della sezione (linea) tramite la quale si calcolano i valori di
giacitura del piano
xmessage ' INSERISCI 2 PUNTI PER INDIVIDUARE LA TRACCIA DI SEZIONE '
d.what.rast -t punti_sezione
cat punti_sezione | grep -vpunti_sezione_corretti
N_punti_corretti=` cat punti_sezione_corretti | wc -l`
z=$(($N_punti_corretti/2))
#--
#ciclo per ottenere la X e la Y dei due punti individuati
#--
for ((x=1; x=$z; x++)) do
#creazione di un file di estrapolazione dati corretto (cioe' senza
linee vuote)
b=$(($x*2))
cat punti_sezione_corretti | sed 's/:/ /g' | awk -F '( NR == '$b' )
{ print $1, $2 }' XY_PUNTI_FINALE
done
#--
#ciclo per ottenere la Z dei due punti individuati
#--
cat punti_sezione | grep actual | sed 's/,/ /g' | sed 's/:/ /g'
z_punti_sezione_corretti
NR_Z=` cat z_punti_sezione_corretti | wc -l`
for ((x=1; x=$NR_Z; x++)) do
cat z_punti_sezione_corretti | awk -F '( NR == '$x' ) { print $3 }'
Z_PUNTI_FINALE
done
#--
#rimozione di alcuni files testuali
rm punti_sezione punti_sezione_corretti z_punti_sezione_corretti
[GRASS-user] Re: Ongoing r.in.wms issue
Hamish, if you're ever in Sydney, I owe you a beer/wine/spirits/coffee.
This worked. I can now hand off both the built-in scripts and the
home-made WMS generic download script to my colleagues without the pangs
of guilt! Thanks!
Richard
Hamish wrote:
Richard Chirgwin wrote:
here is all the debug information that popped out:
D1/1: -n
Everything else is as you have seen before...
/Applications/Grass-6.3.app/Contents/MacOS/etc/r.in.wms/wms.download:
line 118: eval: -n: invalid option
eval: usage: eval [arg ...]
(etc)
I found it- non-portable use of 'echo -n' in wms.request, line 223:
223 #reset the requestfile
224 echo -n ${REQUESTFILE}
can you try just removing the -n on that line?
http://trac.osgeo.org/grass/changeset/30479
that will result in an extra blank line at the top of the request file
(wms/downoad/*.curl), but I am pretty sure that won't make any
difference as the $CONTENTS for loop in wms.download will filter out
any extra whitespace.
Hamish
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[GRASS-user] Update - Check points in polygons
Thanks a lot to all of you! To keep you up to date: METHOD1 1) v.in.ogr dsn=/home/ct529/Documents/Projects/UKBryophytes/Datasets/BRYOPHYTES/BRYOPHYTES/SSSI_vectors/ENGLAND.shp output=England_SSSI layer=ENGLAND min_area=0.0001 snap=-1 location=England_from_shapefile 2) v.clean input=England_SSSI output=England_SSSI_clean error=England_SSSI_error tool=bpol 3) v.in.ascii input=/home/ct529/Documents/Projects/UKBryophytes/Datasets/species_sites_100m.csv output=species_100m format=point fs=, skip=0 x=4 y=5 z=0 cat=0 4) in postgresql: alter table species_100m add colum sssi_name varchar(120); 5) v.distance from=species_100m to=England_SSSI dmax=0 upload=to_attr to_column=sssi_name col=sssi_name 6) in postgresql: select species_name,sssi_name,count(species_id) from species_100m where sssi_name is not null group by species_name,sssi_name order by species_name; What do you think? I may now run it on dmax=100 and dmax=500. METHOD2 Today I am going to try Roger's method, combining GRASS and R ,so that I can compare. METHOD3 I would like to develop a comparative method using only grass, and reading the shape file directly (without going through spgrass6) using readOGR and the rgdal library. Any clue? I think when I wrote back to the project leader that the problem was solved, she as rather impressed by GRASS and by the GRASS community. Best Regards -- Corrado Topi Global Climate Change and Biodiversity Area 18,Department of Biology University of York, York, YO10 5YW, UK Phone: + 44 (0) 1904 328645, E-mail: [EMAIL PROTECTED] ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: Signature made by i.class not accessible?
Hi all, "are the signature files saved to the current directory, or in a folder off of the current directory; then if you change directory before trying the next module it won't be able to find them?" Whichever directory I'm working in, the signature files are always saved under the image subgroup. If the raster maps I am analyzing are in group "testi" and subgroup "alatesti", the signature files will be saved in a directory called "sig" under my subgroup "alatesti". That is, they will be in /paula/groups/testi/subgroups/alatesti/sig/ This is always true, no matter if I create the signatures with i.cluster, or r.digit i.gensigset, or i.class. I've tried all these. And the rights to the signature file are always the same. i.maxlik can access the signature files created with i.cluster and i.gensigset, just not the ones created with i.class. And even if I work in that directory (groups/testi/subgroups/alatesti/sig), I still can't access the signature. "can you recreate the error with the spearfish for new NC sample datasets? if so can you post all commands and messages from that process?" I strongly suspect I will have the same problem even with the Spearfish data set, because it occurs no matter which data I am using. I will try it next, however. Thanks for the tip! The commands I'm using are just: i.class map=varikuva group=testi subgroup=alatesti outsig=signature -Then there's the whole choosing and analyzing the test regions in the graphic window. When that's finished, I say: i.maxlik group=testi subgroup=alatesti sigfile=signature class=resultmap And I get the error message: ERROR: Can't read signature file [signature]. Still, the signature file IS created, and I can see it sitting and lurking there. I just can't use it. "try removing the @mapset part from the group names in the GUI window." I am calling i.class from the command line, and then I'm calling i.maxlik from the command line as well. So, normally I don't open the GUI for this. If I do open the GUI window for the i.maxlik, and try from there, and make sure that the @mapset doesn't appear, I still get the same error message. Thanks for the messages and the suggestions! Paula ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: Using GRASS to solve the Checking if a point (X, Y) is inside the, polygons of a shape file using command line.
Corrado wrote: Where do I find these files, like poly.c? I cannot find them on my installation. I have 6.2.3 on Ubuntu 7.10, with the grass-dev package installed. Do I have to use python? I thought I could use a bash script. I was meaning fundamentally those functions are present in the C source code if you want to have a peek under the bonnet: http://trac.osgeo.org/grass/browser/grass/trunk/lib/vector/Vlib/ If that's a bit dense you can check out what the Programmer's module: http://download.osgeo.org/grass/grass6_progman/ But typically you should be able to get at whatever functionality you need from the modules (command line / GUI interfaces). There isn't much you can't do with the modules, it may not be obvious which module contains the functionality, but if you keep searching+asking eventually a solution comes to light. If you must have access to a function not covered by a module or e.g. want to write a high performance custom model into a new module, you can get access to those C library functions using the SWIG Python interface without having to mess with knowing C. Hamish Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] (no subject)
Lukas Rohrer wrote: Is it possible to draw a Profile based on a digital hight model and a selectet line? sure, see r.profile and r.transect modules. If your line is already a vector line and not just a collection of coordinates, you could use 'v.out.ascii format=standard' first to get the line's coordinates. r.profile will take input from stdin, so with a little awk magic you could pipe v.out.ascii directly into r.profile. If you figure that out, maybe post it back here so we could add it as an example on the r.profile help page. see also the profile tool in the GIS.m GUI menu for interactive profile creation. (you could display the line and trace over it) Hamish Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
RE: [GRASS-user] loss of bash aliases
Hamish:
FWIW, my .grass.bashrc has:
.. /home/hamish/.alias
export HISTSIZE=3000
Thank you! I was trying to think of what that variable name was to extend
my mapset history beyond 500 records.
# first GRASS instance gets set a low priority (because we can)
NUMGRASSES=`pgrep -c Init.sh`
if [ $NUMGRASSES -le 1 ] ; then
renice +17 -p $$
else
NICENESS=`echo $NUMGRASSES | awk '{printf(%0.f, 20 / $1)}'`
renice +$NICENESS -p $$
fi
What is the result of this - that all Grass processes get a low priority
compared to the rest of the OS?
~ Eric.
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[GRASS-user] Starspan/GRASS question
List: My apologies for the background info. leading-up to my question… I've seen mention of starspan previously and now I think it's time for me to learn more. Let me pose a problem to you to see if starspan would be of help. I am working on a modeling project with a couple of other people that involves the following: (1) downloading and decoding gridded fields of numerical weather prediction (NWP) model output (2) ingesting the decoded data into GRASS to calculate basin average precipitation temperature (separate grids) for each subbasin (3) writing out all calculated basin average values for each grid to separate files (one file contains one time step of data for all subbasins) for both temperature precipitation (4) for data management reasons, the files from (3) are written to a PostgreSQL database (5) once all time steps of gridded precipitation and temperature field data are written to the PostgreSQL database, another process collects the data and generates individual ascii time series files for each subbasin for both temperature precipitation (6) once (5) is completed a hydrologic model runs using the temperature precipitation time series as input and hydrologic forecasts are generated. This is suppose to be a *real-time* process. The problem I am having is a matter of scale. What I did not say is that there are 12 different sets of NWP output covering a period of 168 hours at 6-hour time steps for both temperature precipitation. So, this means I must process 12*2*(168/6) = 672 grids. Also, I need the mean areal values for 686 subbasins within the domain for each of the grids. Steps (2-4) take about 20 seconds total for each of the grids… which is ~7.5 hours total Step-5 also takes about 20 seconds for each time series file… which is ~7.5 hours total So, about 15 hours total. Now, I can cut this time in half by running the processing of the temperature precipitation grids and generating their separate time series files in parallel, rather than sequentially. So, I can get to about 7 hours fairly easily — what I am shooting for is to get the processing time from 7 hours to about 3 hours (or less). I need to more efficiently generate the many basin average time series files from the numerous grids. Can starspan help by reducing the time to calculate the the basin average values faster? I would also appreciate any/all suggestions on how to efficiently go from 'starspan generated basin average values' to my time series files. Realize, of course, the the individual grids are only a slice in time, so I have to track the grids and their resulting individual basin values (in time) to generate the time series files. To compound the problem, very soon, I need to add model grids from an additional 21 models, bringing the total from 12 to 33! Regards, Tom -- Thomas E Adams National Weather Service Ohio River Forecast Center 1901 South State Route 134 Wilmington, OH 45177 EMAIL: [EMAIL PROTECTED] 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
[GRASS-user] get x,y from gravity point of a centroid
Dear list, how can I get the x,y -coordinates from the gravity point of a centroid ? Regards Chris _ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: Update - Check points in polygons
That's great to hear. If there is to be a complaint about open source, it would be that there are many great ways to achieve the same result. Of course, this is actually a compliment. You will find the environment that you are most comfortable working in and develop your own solutions. If you are comfortable with postgis, you can do all of it there as well. That is not something I have done, but I know it is possible. You might take a look at this post and ferret out the slides from the talk that are available online as well. http://postgis.refractions.net/pipermail/postgis-users/2007-July/016358.html Cheers, John On Mar 6, 2008, at 2:12 AM, Corrado wrote: Thanks a lot to all of you! To keep you up to date: METHOD1 1) v.in.ogr dsn=/home/ct529/Documents/Projects/UKBryophytes/Datasets/BRYOPHYTES/ BRYOPHYTES/SSSI_vectors/ENGLAND.shp output=England_SSSI layer=ENGLAND min_area=0.0001 snap=-1 location=England_from_shapefile 2) v.clean input=England_SSSI output=England_SSSI_clean error=England_SSSI_error tool=bpol 3) v.in.ascii input=/home/ct529/Documents/Projects/UKBryophytes/Datasets/ species_sites_100m.csv output=species_100m format=point fs=, skip=0 x=4 y=5 z=0 cat=0 4) in postgresql: alter table species_100m add colum sssi_name varchar(120); 5) v.distance from=species_100m to=England_SSSI dmax=0 upload=to_attr to_column=sssi_name col=sssi_name 6) in postgresql: select species_name,sssi_name,count(species_id) from species_100m where sssi_name is not null group by species_name,sssi_name order by species_name; What do you think? I may now run it on dmax=100 and dmax=500. METHOD2 Today I am going to try Roger's method, combining GRASS and R ,so that I can compare. METHOD3 I would like to develop a comparative method using only grass, and reading the shape file directly (without going through spgrass6) using readOGR and the rgdal library. Any clue? I think when I wrote back to the project leader that the problem was solved, she as rather impressed by GRASS and by the GRASS community. Best Regards -- Corrado Topi Global Climate Change and Biodiversity Area 18,Department of Biology University of York, York, YO10 5YW, UK Phone: + 44 (0) 1904 328645, E-mail: [EMAIL PROTECTED] ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Starspan/GRASS question
So if I understand this correctly, you have some polygon surface that defines the extent of your subbasin, which you want to use to query and summarize the raster values falling within it (e.g. precip and temp), correct? How are you doing it currently? The main speedup that starspan gets you is that the polygon - raster query should be significantly faster than a zonalstats type analysis. With that said (and I'll need to talk to Carlos, the lead programmer of starspan, about this) there might be some tricks you can use if you are extracting using the same polygons and the same grids (in terms of size of raster, number of samples, lines, geographic extent, etc...) The idea is basically there are two processing bottlenecks: 1) determining the polygon/raster intersection and 2) the i/o and actual extraction of the data. #1 could be made faster if you are always using the same polys and grids, since you could (in theory) only determine the intersection once... While we kick this around on our end, I'd recommend grabbing the latest and greatest version of starspan, and trying it out! --j Thomas Adams wrote: List: My apologies for the background info. leading-up to my question… I've seen mention of starspan previously and now I think it's time for me to learn more. Let me pose a problem to you to see if starspan would be of help. I am working on a modeling project with a couple of other people that involves the following: (1) downloading and decoding gridded fields of numerical weather prediction (NWP) model output (2) ingesting the decoded data into GRASS to calculate basin average precipitation temperature (separate grids) for each subbasin (3) writing out all calculated basin average values for each grid to separate files (one file contains one time step of data for all subbasins) for both temperature precipitation (4) for data management reasons, the files from (3) are written to a PostgreSQL database (5) once all time steps of gridded precipitation and temperature field data are written to the PostgreSQL database, another process collects the data and generates individual ascii time series files for each subbasin for both temperature precipitation (6) once (5) is completed a hydrologic model runs using the temperature precipitation time series as input and hydrologic forecasts are generated. This is suppose to be a *real-time* process. The problem I am having is a matter of scale. What I did not say is that there are 12 different sets of NWP output covering a period of 168 hours at 6-hour time steps for both temperature precipitation. So, this means I must process 12*2*(168/6) = 672 grids. Also, I need the mean areal values for 686 subbasins within the domain for each of the grids. Steps (2-4) take about 20 seconds total for each of the grids… which is ~7.5 hours total Step-5 also takes about 20 seconds for each time series file… which is ~7.5 hours total So, about 15 hours total. Now, I can cut this time in half by running the processing of the temperature precipitation grids and generating their separate time series files in parallel, rather than sequentially. So, I can get to about 7 hours fairly easily — what I am shooting for is to get the processing time from 7 hours to about 3 hours (or less). I need to more efficiently generate the many basin average time series files from the numerous grids. Can starspan help by reducing the time to calculate the the basin average values faster? I would also appreciate any/all suggestions on how to efficiently go from 'starspan generated basin average values' to my time series files. Realize, of course, the the individual grids are only a slice in time, so I have to track the grids and their resulting individual basin values (in time) to generate the time series files. To compound the problem, very soon, I need to add model grids from an additional 21 models, bringing the total from 12 to 33! Regards, Tom -- Jonathan A. Greenberg, PhD Postdoctoral Scholar Center for Spatial Technologies and Remote Sensing (CSTARS) University of California, Davis One Shields Avenue The Barn, Room 250N Davis, CA 95616 Cell: 415-794-5043 AIM: jgrn307, MSN: [EMAIL PROTECTED], Gchat: jgrn307 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Starspan/GRASS question
Jonathan, I think you have the problem correct. Attached is a gif image that shows my 686 subbasins (polygons) in green. I need to get average values of temperature precipitation for each of the polygon areas for numerous rasters. From the values, I then generate the time series files for each subbasin area (i.e., each polygon). Thanks very much for your reply! Regards, Tom Jonathan Greenberg wrote: So if I understand this correctly, you have some polygon surface that defines the extent of your subbasin, which you want to use to query and summarize the raster values falling within it (e.g. precip and temp), correct? How are you doing it currently? The main speedup that starspan gets you is that the polygon - raster query should be significantly faster than a zonalstats type analysis. With that said (and I'll need to talk to Carlos, the lead programmer of starspan, about this) there might be some tricks you can use if you are extracting using the same polygons and the same grids (in terms of size of raster, number of samples, lines, geographic extent, etc...) The idea is basically there are two processing bottlenecks: 1) determining the polygon/raster intersection and 2) the i/o and actual extraction of the data. #1 could be made faster if you are always using the same polys and grids, since you could (in theory) only determine the intersection once... While we kick this around on our end, I'd recommend grabbing the latest and greatest version of starspan, and trying it out! --j Thomas Adams wrote: List: My apologies for the background info. leading-up to my question… I've seen mention of starspan previously and now I think it's time for me to learn more. Let me pose a problem to you to see if starspan would be of help. I am working on a modeling project with a couple of other people that involves the following: (1) downloading and decoding gridded fields of numerical weather prediction (NWP) model output (2) ingesting the decoded data into GRASS to calculate basin average precipitation temperature (separate grids) for each subbasin (3) writing out all calculated basin average values for each grid to separate files (one file contains one time step of data for all subbasins) for both temperature precipitation (4) for data management reasons, the files from (3) are written to a PostgreSQL database (5) once all time steps of gridded precipitation and temperature field data are written to the PostgreSQL database, another process collects the data and generates individual ascii time series files for each subbasin for both temperature precipitation (6) once (5) is completed a hydrologic model runs using the temperature precipitation time series as input and hydrologic forecasts are generated. This is suppose to be a *real-time* process. The problem I am having is a matter of scale. What I did not say is that there are 12 different sets of NWP output covering a period of 168 hours at 6-hour time steps for both temperature precipitation. So, this means I must process 12*2*(168/6) = 672 grids. Also, I need the mean areal values for 686 subbasins within the domain for each of the grids. Steps (2-4) take about 20 seconds total for each of the grids… which is ~7.5 hours total Step-5 also takes about 20 seconds for each time series file… which is ~7.5 hours total So, about 15 hours total. Now, I can cut this time in half by running the processing of the temperature precipitation grids and generating their separate time series files in parallel, rather than sequentially. So, I can get to about 7 hours fairly easily — what I am shooting for is to get the processing time from 7 hours to about 3 hours (or less). I need to more efficiently generate the many basin average time series files from the numerous grids. Can starspan help by reducing the time to calculate the the basin average values faster? I would also appreciate any/all suggestions on how to efficiently go from 'starspan generated basin average values' to my time series files. Realize, of course, the the individual grids are only a slice in time, so I have to track the grids and their resulting individual basin values (in time) to generate the time series files. To compound the problem, very soon, I need to add model grids from an additional 21 models, bringing the total from 12 to 33! Regards, Tom -- Thomas E Adams National Weather Service Ohio River Forecast Center 1901 South State Route 134 Wilmington, OH 45177 EMAIL: [EMAIL PROTECTED] VOICE: 937-383-0528 FAX:937-383-0033 inline: ohrfc.subbasins.gif___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: Update - Check points in polygons
Dear John, I have used postgis to load a shapefile into the postgres database, by means of shp2pgsql. When I then start grass, how could I can connect to the databse, but I do not understand how to generate a vector map from the postgis table. Any help? Best Regards -- Corrado Topi Global Climate Change and Biodiversity Area 18,Department of Biology University of York, York, YO10 5YW, UK Phone: + 44 (0) 1904 328645, E-mail: [EMAIL PROTECTED] ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: Update - Check points in polygons
I have not found a way to work directly with postgis tables. You can use v.in.ogr like this: v.in.ogr dsn=PG:dbname=your_postgis_db host=yourhost layer=table_from_postgis out=new_layer You then have the postgis table available as a layer in grass, but you will not be able to edit it directly from grass to my knowledge. Someone else might be able to supply the v.out.ogr statement that would update the table in postgis. Cheers, John On Mar 6, 2008, at 8:57 AM, Corrado wrote: Dear John, I have used postgis to load a shapefile into the postgres database, by means of shp2pgsql. When I then start grass, how could I can connect to the databse, but I do not understand how to generate a vector map from the postgis table. Any help? Best Regards -- Corrado Topi Global Climate Change and Biodiversity Area 18,Department of Biology University of York, York, YO10 5YW, UK Phone: + 44 (0) 1904 328645, E-mail: [EMAIL PROTECTED] ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] a few suggestions and questions
On Wednesday 05 March 2008, Jarek Jasiewicz wrote: Dylan Beaudette wrote: On Monday 03 March 2008, Jarosław Jasiewicz wrote: Nikos Alexandris pisze: On Mon, 2008-03-03 at 22:52 -0300, Carlos Guâno Grohmann wrote: Hello all [...] is plan curvature in r.param.scale broken? I can't get a map of it. profc works fine. Also is it possible to make r.param.scale work in latlong regions? (please?) it is imposible due to polinominal fitting when window is more than 3 This may reveal my level of understanding of the r.param.scale module, but why should the profile curvature be impossible to calculate when the window size is 3x3 ? Thanks Dylan Probably not! Just tested... and it says: Lat/Long location is not supported Maybe check the PhD thesis: www.soi.city.ac.uk/~jwo/phd/ ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user I analised the code of (I need that solution for some other problem). The module use polinominal fitting to calculate is written to work on rectangular grid, so program shoud be compeeltly rewriten to use lat-long. As far as I know - r.param scale is now development as Landserf maybe try this but I cant say if landserf can work on lat-long (I suppose - yes) Ah- OK. It looks like the problem is with the fitting of polynomials in LL locations, and NT the 3x3 grid / plan curv. problem-- that must be related to a bug. I don't see a ticket for r.param.scale on the trac site. Carlos- can you please create one with any example you might have? Thanks, 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
Re: [GRASS-user] I need help
On Thu, 2008-03-06 at 13:18 +0100, Raonel wrote: Hi Raonel! I have already discharged the installer of Grass but I am not able to install it. I have the manual but I don't understand the form that they explain as making it Which operating system do you use? Which version of GRASS are you trying to install? ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] I need help
On Thu, 2008-03-06 at 14:07 +0100, Raonel wrote: Nikos Alexandris escribió: On Thu, 2008-03-06 at 13:18 +0100, Raonel wrote: Hi Raonel! I have already discharged the installer of Grass but I am not able to install it. I have the manual but I don't understand the form that they explain as making it [...] I execute the command sh grass6install.sh grass-6.2.2.tar.gz_Linux_bin.tar.gz and he doesn't find the directory. Can you be more specific please? I assume you try to install GRASS under linux. Which distribution (version) of linux? From where did you download GRASS (the grass-6.2.2.tar.gz_Linux_bin.tar file) and the grass6install.sh script? You speak spanish? Hmmm, un poquito! Entiendo mas o menos pero este foro es en ingles. Podria darme mas informacion por favor ( aunque sea en Spanglish) ;-) ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] I need help
Nikos Alexandris schrieb: On Thu, 2008-03-06 at 14:07 +0100, Raonel wrote: Nikos Alexandris escribió: On Thu, 2008-03-06 at 13:18 +0100, Raonel wrote: Hi Raonel! I have already discharged the installer of Grass but I am not able to install it. I have the manual but I don't understand the form that they explain as making it [...] I execute the command sh grass6install.sh grass-6.2.2.tar.gz_Linux_bin.tar.gz and he doesn't find the directory. Can you be more specific please? I assume you try to install GRASS under linux. Which distribution (version) of linux? From where did you download GRASS (the grass-6.2.2.tar.gz_Linux_bin.tar file) and the grass6install.sh script? You speak spanish? Hmmm, un poquito! Entiendo mas o menos pero este foro es en ingles. Podria darme mas informacion por favor ( aunque sea en Spanglish) ;-) ___ Hola Raonel, bien venido al mundo GRASS aquí una lista de difusión en español: http://lists.osgeo.org/mailman/listinfo/grass-es quizá vas a encontrar ayuda por allá. swich to inglés... You have to unpack the tar.gz by tar xvfz grass-6.2.2.tar.gz_Linux_bin.tar.gz Then change into this directory and read the README. run the .configure.sh if this works well you can run make and make install. If you get errors from the configure.sh., tell them again Es muy importante que siempre cuando escribes un mail a la lista añades la version de GRASS y el sistema (Ubuntu, suse, debian ...) y el numero de la version, para que la comunidad sepa las informaciones básicas. Además usa un sujeto más significativo como Problems by installing GRASS 6.2.2. Casi toda la gente que escribe al foro needs help :-P Mucha suerte saludos Philipp PS: Nikos, Ich dachte Du schreibst aus Griechenland... aber weit gefehlt. ;-) Grüße aus Augsburg ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] I need help
On Thu, 2008-03-06 at 23:09 +0100, Philipp Steigenberger wrote: [...] Hola Raonel, bien venido al mundo GRASS aquí una lista de difusión en español: http://lists.osgeo.org/mailman/listinfo/grass-es quizá vas a encontrar ayuda por allá. swich to inglés... You have to unpack the tar.gz by tar xvfz grass-6.2.2.tar.gz_Linux_bin.tar.gz Really, I couldn't trace this file? For which distro is it? Then change into this directory and read the README. run the .configure.sh if this works well you can run make and make install. If you get errors from the configure.sh., tell them again Es muy importante que siempre cuando escribes un mail a la lista añades la version de GRASS y el sistema (Ubuntu, suse, debian ...) y el numero de la version, para que la comunidad sepa las informaciones básicas. Además usa un sujeto más significativo como Problems by installing GRASS 6.2.2. Casi toda la gente que escribe al foro needs help :-P Mucha suerte saludos Philipp PS: Nikos, Ich dachte Du schreibst aus Griechenland... aber weit gefehlt. ;-) Grüße aus Augsburg Hallo Philipp. Ich bin in Freiburg und jeder dritte Erasmus-Student ist ein Spanier. Also man muss zumindest die basics beherschen ;-) Viele Gruesse, Nikos ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Writing recode rules into a Postgres Database
Hello, I would like to explain the problem I am trying to solve. I begin with importing a shapefile of county boundaries into a GRASS vector map. I then convert the vector map into a raster map using a county ID code in the vector map attributes. What I get is a raster map with pixels coded into some 30 different county ID categories. I also have a second raster map whose pixels are assigned one of a continuous range of floating point values (i.e. dust concentration). I then use r.average to recode the county map IDs into a new map that has counties coded by average dust concentration. When I run r.info I get something like this: *** raster file fips_county2 generated by r.recode recode of raster file fips_county2 0:0:0.00 35001:35001:5.4066317414 35003:35003:5.9971417728 35005:35005:3.9597935272 35006:35006:7.5931687376 35007:35007:5.3254945193 35009:35009:0.9088373997 35011:35011:2.3610553445 35013:35013:21.1810002482 The recode rules on each line show that the county ID numbers (e.g. 35001) are recoded into average dust concentration values (e.g. 5.4066317414). I am interested in taking these two pieces of information, county ID and average dust concentration, and for each county, appending them as a row to a PostgreSQL database table. I have thought of parsing the recode files in the hist directories using a scripting language, but would like to try something more straightforward. Any ideas? Thanks very much, Bill ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] I need help
On Thu, 6 Mar 2008, Paul Kelly wrote: On Thu, 6 Mar 2008, Philipp Steigenberger wrote: I execute the command sh grass6install.sh grass-6.2.2.tar.gz_Linux_bin.tar.gz and he doesn't find the directory. Can you give the exact command-line you typed, and the exact error mesage (copied and pasted). This would make it a lot easier to debug. [...] You have to unpack the tar.gz by tar xvfz grass-6.2.2.tar.gz_Linux_bin.tar.gz No that's not correct. grass6install.sh is the binary installer script Replying to myself, sorry I missed the very weird looking filename there (tar.gz in the middle and at the end doesn't look right). I think Philipp is right and it is actually a source distribution tarball but has been renamed with bin in the name just to confuse things In which case his instructions about ./configure, make etc. apply. I'm really just guessing though. Paul ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] I need help
Paul Kelly wrote: On Thu, 6 Mar 2008, Paul Kelly wrote: On Thu, 6 Mar 2008, Philipp Steigenberger wrote: I execute the command sh grass6install.sh grass-6.2.2.tar.gz_Linux_bin.tar.gz and he doesn't find the directory. Can you give the exact command-line you typed, and the exact error mesage (copied and pasted). This would make it a lot easier to debug. [...] You have to unpack the tar.gz by tar xvfz grass-6.2.2.tar.gz_Linux_bin.tar.gz No that's not correct. grass6install.sh is the binary installer script Replying to myself, sorry I missed the very weird looking filename there (tar.gz in the middle and at the end doesn't look right). I think Philipp is right and it is actually a source distribution tarball but has been renamed with bin in the name just to confuse things In which case his instructions about ./configure, make etc. apply. I'm really just guessing though. Paul Raonel, I would suggest that you download again the actual stable version: Here http://grass.itc.it/download/index.php (optionally you can choose the mirror nearest to you here: http://grass.itc.it/mirrors.php) you can choose your distribution in the binary column. Or you download the sourcecode and compile it by yourself (more complicated): http://grass.itc.it/grass62/source/grass-6.2.3.tar.gz suerte Philipp ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
