Re: [GRASS-user] grass70 and display monitor
Hi, 2009/12/5 Jan Hartmann j.l.h.hartm...@uva.nl: A point on digitizing. If you haven't tried it, you should take a look at the digitizing that Martin has built into the new GUI. Because it has hot-key equivalents for all buttons, you CAN digitize with your right hand on the mouse and left on the keyboard. It also has a lot of contextual menus that you access by right clicking while you digitize rather than having to move to a separate text area like in 5.4. Ah, I hadn't realized that. Is that in GRASS 7? I don't use GRASS enough no, it waits to be implemented (generally speaking easy task), see [1]. Martin [1] http://trac.osgeo.org/grass/ticket/497 -- Martin Landa landa.martin gmail.com * http://gama.fsv.cvut.cz/~landa ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
RE: [GRASS-user] GIS and GPU
And I am -very- new to python, do you have any clue on how to begin? Send raster to a python matrix? The major deal that i'am thinking is to implement massive orthoretification of sat images on grass using RPCs (for comercial sats) or Rigorous models (for CBERS sat, that have free 2,5m pan images). I have some of the math, but I'am just beguining to learn programing. Am I dreaming too high? Anyway it will be fun to try. Regards. Pablo. Hi I'm interested in this. New to GRASS though. Doing some experiment. Many CPU bound task of GRASS is not even taking advantage of multicore now, let alone GPU. Peng Pablo Carreira wrote: Hi, I'am curious to know if there is any development is using GPU to accelerate some tasks in GIS, like raster calculations. I have an Nvidia gpu and found pyCUDA parallel computation very interesting. Is there any paper in this subject to read? Thanks. Pablo Torres Carreira _ Fique protegido de ameças utilizando o Novo Internet Explorer 8. Baixe já, é grátis! http://brasil.microsoft.com.br/IE8/mergulhe/?utm_source=MSN%3BHotmailutm_medium=Taglineutm_content=Tag1utm_campaign=IE8___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: i.atcorr with MSS band 5,6,7
Hello, thanks for your response. i.atcorr supports the MSS sensor aboard Landsat 5 and is not applicable to Landsat 1 data (nor landsat's 2,3 or 4). In-order to atmospherically correct landsat 1 data with i.atcorr you'll need to add support for it. Yes, I got that from the help page. It's not hard and I would be willing to spare what free time I can to help you but the first step, Thanks for your offer. Very generous. and possibly the most difficult, is to find the spectral response curves for the RBV and MSS sensors aboard Landsat 1. Does anyone have an idea where I can find these response curves? Where are the current pre-defined band configurations from? Kind regards, Marco ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
RE: [GRASS-user] GIS and GPU
Hi Peng, I want to make a new function, I want to put the orthoretification mathematical theory that I have in any programming language, but I am lost. The last program that I wrote was 8 years ago in VBasic. The criteria for choosing python is that Python looks to me more easy to learn. And the idea of using CUDA is to develop a concept. Pablo Torres Carreira Date: Sun, 6 Dec 2009 14:28:33 -0500 From: d...@cs.utk.edu To: pablotcarre...@hotmail.com Subject: Re: [GRASS-user] GIS and GPU Pablo I've only been using C and cuda. As to python I'm not so sure either. Do you have to work with python or you just want some function of GRASS to take advantage of GPU and run faster? Peng Pablo Carreira wrote: And I am -very- new to python, do you have any clue on how to begin? Send raster to a python matrix? The major deal that i'am thinking is to implement massive orthoretification of sat images on grass using RPCs (for comercial sats) or Rigorous models (for CBERS sat, that have free 2,5m pan images). I have some of the math, but I'am just beguining to learn programing. Am I dreaming too high? Anyway it will be fun to try. Regards. Pablo. Hi I'm interested in this. New to GRASS though. Doing some experiment. Many CPU bound task of GRASS is not even taking advantage of multicore now, let alone GPU. Peng Pablo Carreira wrote: Hi, I'am curious to know if there is any development is using GPU to accelerate some tasks in GIS, like raster calculations. I have an Nvidia gpu and found pyCUDA parallel computation very interesting. Is there any paper in this subject to read? Thanks. Pablo Torres Carreira Agora a pressa é amiga da perfeição. Chegou Windows 7. Conheça. http://www.microsoft.com/brasil/windows7/default.html?WT.mc_id=1539 _ Com o Internet Explorer 8 você tem seu contéudo favorito em poucos cliques. Conheça! http://brasil.microsoft.com.br/IE8/mergulhe/?utm_source=MSN%3BHotmailutm_medium=Taglineutm_content=Tag5utm_campaign=IE8___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: v.breach addon
Aftermath...
I had to change some strings to make v.breach work on GRASS 6.4svn
revision 39873, Ubuntu/Debian 9.10.
Luís Ferreira
-
line 310
v.parallel input=${OUTP}_grid_addcat_bnd_patch_break_ln_2l_tmp_${UNQ}
output=${OUTP}_segm_2l_r_tmp_${UNQ} distance=0.1 --o /dev/null
and
line 312
v.parallel input=${OUTP}_grid_addcat_bnd_patch_break_ln_2l_tmp_${UNQ}
output=${OUTP}_segm_2l_l_tmp_${UNQ} distance=-0.1 --o /dev/null
change to
v.parallel
input=${OUTP}_grid_addcat_bnd_patch_break_ln_2l_tmp_${UNQ}
output=${OUTP}_segm_2l_r_tmp_${UNQ} side=right distance=0.1 --o
/dev/null
v.parallel
input=${OUTP}_grid_addcat_bnd_patch_break_ln_2l_tmp_${UNQ}
output=${OUTP}_segm_2l_l_tmp_${UNQ} side=left distance=0.1 --o
/dev/null
--
line 388
v.db.addcol map=${OUTP} layer=2 'columns=x double, y double, z double,
z_breach double' /dev/null
change to
v.db.addcol map=${OUTP} layer=2
'columns=x double precision, y double
precision, z double precision, z_breach
double precision' /dev/null
---
line 474
db.execute input=$TMP.${PROG}.sql database=$dbs driver=$drv /dev/null
change to
db.execute input=$TMP.${PROG}.sql database=${database}
driver=
${driver} /dev/null
---
change $tbl to $table
--
v.clean tool=prune
defaulting to treshold=0.0
--
line 464
change to
table=`v.db.connect -g ${OUTP} | awk '{print $2}'`
database=`v.db.connect -g ${OUTP} | awk '{print $4}'`
driver=`v.db.connect -g ${OUTP} | awk '{print $5}'`
make explicit field separator for awk
awk -F |
On Wed, 2009-12-02 at 21:35 +0100, Maciej Sieczka wrote:
Luís Ferreira pisze:
I want to make a hydrological corrected DEM, using v.surf.rst for
interpolation/aproximation and v.breach to introduce aditional
elevation points at streams.
My spatial reference system is EPSG:3763 ETRS89 / Portugal TM06,
(metrical).
As required in v.breach document: - each input vect line have a
unique category in layer 1; - input lines not cross themselves; -
input lines not constitute loops; - the input vector lines not stand
out of the input raster DEM; - the input lines direction is from
upstream to downstream.
After creating a DEM using v.surf.rst I want to correct the false
sinks in narrow valleys and sparse points areas. Using v.breach I
have as result two output vectors for streams lines and points but
without entities or attributes. I tried with both PostgreSQL and
Sqlite database connections.
For PostgreSQL connection:
DBMI-Postgres driver error: Cannot select: SELECT cat,lcat,z,z_breach
FROM topografia.vbreachpoints_2 ERROR: column z does not exist
LINE 1: SELECT cat,lcat,z,z_breach FROM topografia.vbreachpoints_2 ^
Unable to open select cursor: 'SELECT cat,lcat,z,z_breach FROM
topografia.vbreachpoints_2' Copy table failed Table vbreach_2 does
not exist in database host=localhost,dbname=grass_pp_muda_pttm06
The table vbreach_2 is now part of vector map vbreach and may be
deleted or overwritten by GRASS modules DBMI-Postgres driver error:
Cannot create index: create unique index vbreach_2_cat on vbreach_2
( cat ) ERROR: relation vbreach_2 does not exist Cannot create
index DBMI-Postgres driver error: Cannot grant on table: grant select
on vbreach_2 to public ERROR: relation vbreach_2 does not exist
Cannot grant privileges on table vbreach_2 Select privileges were
granted on the table
Any ideas? If wanted I'll send the files needed for replication.
Luís,
Glad to see someone trying to use my stuff :).
What GRASS version do you use? What OS? What was your command line, exactly?
Maybe the culprit is the DB backend. I have never used the script with
anything else than DBF. Try to switch to DBF in GRASS (db.connect). Or a
GRASS version too new. I think I used it only against 6.3. There
*might* have been changes to underlying GRASS modules.
I've written the script, and used it the last time, about 2 years ago.
It did the job fine then. I don't have a personal interest in developing
it at the moment. I could provide you a commercial support if you like.
That would include testing the script against your data, in a GRASS
setup similar to yours, and fixing the tool if necessary.
Please contact me in priv if you are interested. I don't charge much :).
Or, if there's a GRASS hacker willing to do it for free - please go
ahead, anybody.
Best,
Maciek
v.breach_changed
Description: application/shellscript
Re: [GRASS-user] GIS and GPU
Ideally, you could work to replace the old i.orthophoto with new tools built in Python and wxPython to incorporate into the current GRASS development. This would be greatly appreciated by many. IMHO, and as someone who is not trained formally in programming, Python is easy to learn and is quite powerful. The wxPython tool set provides a wide array of event-driven interface building tools that integrates tightly with the object-oriented Python language. There are many good introductory and advanced books for Python, as well as a lot of on-line help. AFAIK, there is only 1 book for wxPython, though a decent amount of help on-line. Michael C. Michael Barton Director, Center for Social Dynamics Complexity Professor of Anthropology, School of Human Evolution Social Change Arizona State University Phone: 480-965-6262 Fax: 480-965-7671 www: www.public.asu.edu/~cmbarton, http://csdc.asu.edu On Dec 6, 2009, at 5:58 PM, grass-user-requ...@lists.osgeo.org wrote: Date: Sun, 6 Dec 2009 19:44:24 -0200 From: Pablo Carreira pablotcarre...@hotmail.com Subject: RE: [GRASS-user] GIS and GPU To: grass-user@lists.osgeo.org Message-ID: snt114-w63c4038a43319f2b13a9b8d6...@phx.gbl Content-Type: text/plain; charset=iso-8859-1 Hi Peng, I want to make a new function, I want to put the orthoretification mathematical theory that I have in any programming language, but I am lost. The last program that I wrote was 8 years ago in VBasic. The criteria for choosing python is that Python looks to me more easy to learn. And the idea of using CUDA is to develop a concept. Pablo Torres Carreira ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: v.breach addon
Luís Ferreira pisze: Aftermath... I had to change some strings to make v.breach work on GRASS 6.4svn revision 39873, Ubuntu/Debian 9.10. Can you send a diff (diff original_file your_file), as attachment? Maciek -- Maciej Sieczka http://www.sieczka.org ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] GIS and GPU
Instead of CUDA, maybe consider using OpenCL, as that is a vendor-independent standard which works on GPUs, CPUs and DSPs. There seem to be several Python wrappers for OpenCL. Ben Pablo Carreira wrote: Hi, I'am curious to know if there is any development is using GPU to accelerate some tasks in GIS, like raster calculations. I have an Nvidia gpu and found pyCUDA parallel computation very interesting. Is there any paper in this subject to read? Thanks. Pablo Torres Carreira Quer conexões de rede mais fácil? Clique e conheça o Windows 7. http://www.microsoft.com/brasil/windows7/default.html?WT.mc_id=1539 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user -- Benjamin Ducke Geospatial Consultant Oxford Archaeology Digital Janus House Osney Mead OX2 0ES Oxford, U.K. Tel: +44 (0)1865 263 800 (switchboard) Tel: +44 (0)1865 980 758 (direct) Fax :+44 (0)1865 793 496 benjamin.du...@oadigital.net http://oadigital.net -- Files attached to this email may be in ISO 26300 format (OASIS Open Document Format). If you have difficulty opening them, please visit http://iso26300.info for more information. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
