RE: [GRASS-user] wxgrass Digitization tool

2007/12/3, Pablo Carreira : I'm trying to use wxgrass Digitization tool, it works fine to create new vectors, but when I try to move an existing vertex I get this error in the terminal: Traceback (most recent call last): File /usr/local/grass-6.3.0RC2/etc/wx/gui_modules

FW: [GRASS-user] DXF to UTM32

If your dxf is in a local coordinate system (like old topo drawings) with shifting parameters you can use v.transform or you can put it in place with a CAD software (align) and them import into GRASS. If it already have an utm coordinate and you want to change the reference system (datum)

RE: [GRASS-user] 25 yr celebration

25 year is a long time. I have been working with GRASS for 5 years and I still haven't found nothing you can't do with GRASS. Thank you very much for the developers and users who help. Pablo Torres Carreira Brazil Making a LOT of thematic maps for ambiental purposes. Date: Wed, 18 Nov

RE: [GRASS-user] Strategy For DBMS Use

I have very nice results with sqlite+GRASS. First, use an sqlite administrator software to make things easier. 1) My initial impression is that I need a separate database for each layer (i.e., one for highways, a separate one for streams rivers, etc.). Is this correct? One database

RE: [GRASS-user] Strategy For DBMS Use

Very interesting Rich, I have looked at you site. Nice to meet you. Pablo. I've been using SQLite for several years; it's the back end to my approximate reasoning model for environmental impact assessments. And I'm a stream ecologist/fluvial geomorphologist so I'm sure I'll have

RE: [GRASS-user] DXF to UTM32

From: nete...@osgeo.org Date: Sun, 22 Nov 2009 12:58:48 +0100 Pablo, you notes are very interesting! Could you add them into a related Wiki page: http://grass.osgeo.org/wiki/Import_DXF I have added them. If someone could review it I would thank. Regards. Pablo.

[GRASS-user] Piping Commands

Hi, I want to do the following: v.extract some lines from a vector and them v.buffer those lines How do I pipe these commands? Pablo Torres Carreira _ Novo windowslive.com.br.

RE: [GRASS-user] Piping Commands

] Piping Commands Easiest way: don't pipe! Just make a new vectormap from v.extract and buffer that. (I dont think piping is possible here and v.buffer cannot be restricted on a selection) Achim Pablo Carreira schrieb: Hi, I want to do the following: v.extract some

RE: [GRASS-user] Piping Commands

Hi, Javier! Let me explain: I have a very large vector of rivers, with many CATs. Here in Brazil we have a law that say that, in general, a 30m area aside of rivers should be preserved with trees. Them I look in a high resolution orbital image and where I find a portion river without trees I

RE: [GRASS-user] Piping Commands

Subject: RE: [GRASS-user] Piping Commands Pablo Carreira wrote: In general, is it possible to connect the out= to the in= of vector commands in GRASS No; you can't pipe GRASS maps. GRASS maps consist of multiple files, and they often need to be read and/or written non

RE: [GRASS-user] Reprojecting Vector Map

Hi Rich, I have a general theory that may help you: Assumptions: -Very well defined LOCATION parameters is the foundation to perfectly combine maps of different sources. -The experience tells me that some data are even in the correct reference system, but sometimes the info that comes with it

RE: [GRASS-user] Reprojecting Vector Map

://spatialreference.org/ It has all the parameters ready for use. Pablo Torres Carreira Date: Tue, 24 Nov 2009 14:48:41 -0800 From: rshep...@appl-ecosys.com To: grass-us...@lists.osgeo.org Subject: RE: [GRASS-user] Reprojecting Vector Map CC: On Tue, 24 Nov 2009, Pablo Carreira wrote

[GRASS-user] GISVM - GIS Virtual Machine

Grass and gis users, Here is the link to the GISVM project: http://www.gisvm.com/ GISVM is a free(dom) and ready to use anywhere Geographic Information System Virtual Machine. Based on the amazing Virtualization technology, GISVM is a complete virtual computer with it's own Operating System

re: [GRASS-user] r.mapcalc changes color table

I used the following approach: 1) import the TIFF 2) select the part of interest in the GRASS monitor 3) set the zoomed area as region (monitor tools) At this point r.resamp The output map will match region boundary and resolution with the same category values and color table of

RE: [GRASS-user] Lan dscape connectivity‏

Hi Markus M., after a fast look at Urban Keitt here is my sugestions: a)Create a single central vector point for each patch. b)Connect that vector to an MySQL database. c)create the columns ID, X, Y, NHABDIST, NHABID. d)v.to.db the coordinates of the central points. e)Now you have a a

[GRASS-user] GIS and GPU

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

RE: [GRASS-user] GIS and GPU

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

RE: [GRASS-user] GIS and GPU

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

[GRASS-user] GRASS Vector Export Standards

Hi, 1)Thinking about exchanging Grass vector data between users, I was wondering wich is the the best format to export GRASS vectors, so that they keep GRASS vectors characteristics like two areas sharing the same boundary, the use of centroids, multilayers and database. Any clue? 2)Here

FW: [GRASS-user] How to do vector elaboration only in active region

Hi all, I am trying to use some vector operations in GRASS. I can not understand what I am missing but it happens to me that the vector commands works on all the vector data instead of working only in the active region. I am wrong or is it so, and if so is there in GRASS the possibility

RE: [GRASS-user] Raster surface from regularly spaced points

Luigi, In my works I get good results with v.surf.rst, but it needs a good calibration of the tension and smoothing parametes to conserve the data range. For that I select a small region of the data and then try many combinations. Pablo Torres Carreira Date: Fri, 19 Feb 2010 11:52:43

RE: [GRASS-user] Help with webmaps

Hi, I want to display some of my Grass vectors over the internet with GeoServer. Do I have to export the vector to shp or postgis everytime I make an update, so I can open them with Geoserver? If Geoserver uses GDAL/OGR, you could try to use the GRASS-GDAL-OGR plugin and read the

RE: [GRASS-user] High resolution dem

Frank wrote: My contour map is a combinatin of a national contour line map (5m vert. resolution) and contours from SRTM with 20m vert. resolution. I created a hole in the srtm contours for the national contour map and patched both together to avoid large gaps with no height values

RE: [GRASS-user] bug or buffer for polygons impossible ?

Hello, I try to create a buffer around a polygon with the following commande: v.buffer input=... output= distance=10 I'am using the windows osgeo4w version and the buffer around a polygon works fine even for complex polygons. By the images it looks like you have overlaping or

RE: [GRASS-user] bug or buffer for polygons impossible ?

Hi, try:v.buffer type=area input=polygone593 output=buffer_593 distance=10 there are also the -s option for straight corners. I have tryed it here, look at the images... Pablo Hello, The full command is : v.buffer input=polygone593 output=buffer_593 distance=10 You can find the

[GRASS-user] v.out.ogr to Mysql

Hi, I'am trying to export (v.out.ogr) some vectors to Mysql but I got the following problem: ERROR 1: MySQL error message:Duplicate entry '1' for key 'OGR_FID' For every vector it try to use the same OGR_FID and at the end It exports only the first vector becouse the other has duplicated

RE: [GRASS-user] I c an´t import postgis layer using v.in.ogr in WinGRASS

Hi Thyberio, until that, all ok.but when: v.in.ogr dsn=PG:host=localhost dbname=gis user=postgres layer=Municipios output=Municipios i recieve the following message: ERROR: Unable to open data source PG:host=localhost dbname=gis user=postgres Try: v.in.ogr dsn=PG:dbname=gis

[GRASS-user] Osgeo4W grass error

Hi, I'am trying to start the latest osgeo4w grass on windows 7 but I get an error when I select the dataset. Is it about the language? How can I start grass in english and not in portuguese? Regards, Pablo. Here is the error: C:\C:\OSGeo4W\apps\grass\grass-6.4.0svn\etc\init.bat -wxpython

RE: [GRASS-user] Osgeo4W grass error

I had just installed WinGRASS RC6 with the installer and it worked very well. Pablo Torres Carreira From: pablotcarre...@hotmail.com To: grass-user@lists.osgeo.org Date: Mon, 22 Mar 2010 12:03:01 -0300 Subject: [GRASS-user] Osgeo4W grass error Hi, I'am trying to start the latest

RE: [GRASS-user] Osgeo4W grass error

2010/3/22 Pablo Carreira pablotcarre...@hotmail.com: I had just installed WinGRASS RC6 with the installer and it worked very well. Pablo Torres Carreira -- Milena Nowotarska http://wiki.osgeo.org/wiki/Milena_Nowotarska http://quantum-gis.pl

RE: [GRASS-user] Osgeo4W grass error

-user@lists.osgeo.org Are you using Win7? I think this is a windows restriction that you can't write to the c:\ root. This gave me a couple of headaches also Cheers Daniel On Mon, Mar 22, 2010 at 4:09 PM, Pablo Carreira pablotcarre...@hotmail.com wrote: Hi Milena, It works

RE: [GRASS-user] Osgeo4W grass error

Regards, Milena 2010/3/22 Pablo Carreira pablotcarre...@hotmail.com: Hi Milena, It works, but as reported on ticket 1022 it can't write to c:\ (it's a windows restriction?). look at the tests: Test 1: v.out.ogr input=areas_recuperacao_trabalh...@geral dsn=c:\temp

RE: [GRASS-user] problems with GRASS 6.4

Hello list;I have just installed the new Grass version but I haven't been able to work with it! If I try to launch the GRASS 6.4 ORC6 with the new wxpython GUI; I get an error message saying that python.exe has detected a problem and has to close. Any idea of what the problem could be?

RE: [GRASS-user] split polygon

Hi, This is a very old problem. IMO, there is no simple solution, becouse the computer cannot guess the shapes and the orientation of the polygons you want. I've worked with land partitioning with CAD and the solution was to use LISP program that guess many split positions until it gets equal

RE: [GRASS-user] help with georectify

Sometimes I have the same problem. My solution is to use the georectify module to set the GPCs, save, close it and then run:i.group - i.target - i.rectfy.It's fail safe. Pablo Torres Carreira From: sedwar...@cinci.rr.com Date: Wed, 6 Oct 2010 09:23:17 -0400 To: grass-user@lists.osgeo.org

[GRASS-user] Change database type

Hi, I have many vectors with tables and now I want to change my database from sqlite to pgsql.I ran db.connect. And now I need to copy all the tables from sqlite to pgsql.Is there an easy way to do that? Thanks. Pablo Torres Carreira

RE: [GRASS-user] Re: Change database type (Micha Silver)

...@lists.osgeo.org You can reach the person managing the list at grass-user-ow...@lists.osgeo.org When replying, please edit your Subject line so it is more specific than Re: Contents of grass-user digest... Today's Topics: 1. Change database type (Pablo Carreira) 2

[GRASS-user] Grass freeze in v.digit after some display attributes

Hi, I'm experiencieng a strange bug here: with tcl/tk editor or with qgis, after using the display attributes tool about 10 to 20 times, GRASS (or qgis) completely freeze.I've tried this:-Uninstal and install everything again.-Many different vectos.-Different databases (dbf, sqlite, pgsql). I

RE: [GRASS-user] Is knowledge on Python needed?

Hi Gabriel, No, you don't.IMHO, sometime it's hard to get started because GRASS (and many other open source softwares) has some different logic from the common point and click software. Soon you will realize that the command structure allows you to spare a lot of time in repetitive tasks and

[GRASS-user] d.rast.arrow

Hi, I'am trying to reproduce the results of d.rast.arrow displayed here:http://grass.fbk.eu/grass63/screenshots/images/drastarrow.png But I get very small arrows (like points) and it's useless.Searching the list I've found