JGRASS new User access to GRASS mapsets

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JGRASS new User access to GRASS mapsets

stephen sefick
I am inquiring about the strahler ordering in JGRASS.  does it do a better
job than the v.strahler module in GRASS?  I am having a hard time even
getting data into JGRASS.  I am used to using GRASS (crash course past
couple of weeks).  But I don't know how to use JGRASS - can't get any
data
into JGRASS.  Is there an easy way to gain access to the GRASS mapsets
that
I have already created?  GRASS 6.4RC5 mac os x intel 10.5.x and JGRASS
 version from the wiki.  Thanks for all of your help.
I have gone throught the getting started jgrass link , have created a
mapset, exported a raster map from GRASS in ESRI ASCII grid file type,
sucessfully
imported it into JGRASS (or the prompt says so), but it is not
available for interigation.
Thanks agian for all of your help.
kind regards


--
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

                                                                -K. Mullis
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Re: JGRASS new User access to GRASS mapsets

Bis Nulama
Hi! I try to answer to the last part of your mail, since my attempts with
grass have been all unproductive.

Getting data into jgrass is the most difficult thing of jgrass. I am still
having a lot of troubles even if now I know where's the problem.

I experienced the same problem that you got with the
loading-raster-into-the-mapset-thing. And jgrass does not say anything.
Antonello explained me that it was because of the poor ram of my computer
(just one GB).
You have to increase the ram used by jgrass edting the jgrass.ini file,
which is in the jgrass folder.
Try to increase the 500m (=500Mb) to at least 800-1000 (=800-1000Mb). If you
have enough ram of course.
If the layer is too big for my ram and if I do not need it entirely I cut it
with another gis software and then I load it into jgrass.
I suggest you to try with a smaller raster file to understand if you have my
same problem.

At the beginning I experienced problems also if:
- the name of the raster map is longer than 8 characters
- the file size is bigger than 10-15 Mb (my ram is just 1GB big)
- the path of the location is too long (my location folder is c:/locations)
- I save the project outside the jgrass/workspace folder

Did you see the gfoss slides? They are very useful...

Laura




--------------------------------------------------
From: "stephen sefick" <[hidden email]>
Sent: Thursday, July 23, 2009 5:39 PM
To: <[hidden email]>
Subject: [JGrass-users] JGRASS new User access to GRASS mapsets

> I am inquiring about the strahler ordering in JGRASS.  does it do a better
> job than the v.strahler module in GRASS?  I am having a hard time even
> getting data into JGRASS.  I am used to using GRASS (crash course past
> couple of weeks).  But I don't know how to use JGRASS - can't get any
> data
> into JGRASS.  Is there an easy way to gain access to the GRASS mapsets
> that
> I have already created?  GRASS 6.4RC5 mac os x intel 10.5.x and JGRASS
> version from the wiki.  Thanks for all of your help.
> I have gone throught the getting started jgrass link , have created a
> mapset, exported a raster map from GRASS in ESRI ASCII grid file type,
> sucessfully
> imported it into JGRASS (or the prompt says so), but it is not
> available for interigation.
> Thanks agian for all of your help.
> kind regards
>
>
> --
> Stephen Sefick
>
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
> -K. Mullis
> _______________________________________________
> JGrass-users mailing list
> [hidden email]
> https://dev.fsc.bz.it/cgi-bin/mailman/listinfo/jgrass-users
>
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Re: JGRASS new User access to GRASS mapsets

Riccardo Rigon
In reply to this post by stephen sefick
Dear All, besides information give by Laura, you can look at this link for memory setting:


However, I believe that still remain useful to read the many slides available on using JGrass.


All the best,

riccardo rigon


On Jul 23, 2009, at 5:39 PM, stephen sefick wrote:

I am inquiring about the strahler ordering in JGRASS.  does it do a better
job than the v.strahler module in GRASS?  I am having a hard time even
getting data into JGRASS.  I am used to using GRASS (crash course past
couple of weeks).  But I don't know how to use JGRASS - can't get any
data
into JGRASS.  Is there an easy way to gain access to the GRASS mapsets
that
I have already created?  GRASS 6.4RC5 mac os x intel 10.5.x and JGRASS
version from the wiki.  Thanks for all of your help.
I have gone throught the getting started jgrass link , have created a
mapset, exported a raster map from GRASS in ESRI ASCII grid file type,
sucessfully
imported it into JGRASS (or the prompt says so), but it is not
available for interigation.
Thanks agian for all of your help.
kind regards


--
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

-K. Mullis
_______________________________________________
JGrass-users mailing list
[hidden email]
https://dev.fsc.bz.it/cgi-bin/mailman/listinfo/jgrass-users

________________________________________________________________        
Universita` di Trento         Dipartimento di Ingegneria Civile  e  Ambientale/CUDAM
Via Mesiano, 77, 38050  Trento      (ITALIA)                        
E-mail[hidden email]  
Ph: +390461882614-10    Fax:+390461882672
Publications according to ISI: http://www.researcherid.com/rid/B-5395-2008
JGrass (Open Source GIS): http://www.jgrass.org/
GEOtop (Open Source distributed hydrological model):  http://www.geotop.org/
_______________________________________________________________                                                      





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v.strahler

Riccardo Rigon
In reply to this post by stephen sefick
For what I understand (I am not a GRASS user) any command in GRASS starting with v. is a commands that acts on a vector feature. 
On the contrary r. command in GRASS acts on raster (grass formats). JGrass h.strahler (h stand for "Horton Machine") acts on raster as well. 
So v.strahler (GRASS) and h.strahler (JGrass) should do the same job on different features. 


All the best,

riccardo

On Jul 23, 2009, at 5:39 PM, stephen sefick wrote:

I am inquiring about the strahler ordering in JGRASS.  does it do a better
job than the v.strahler module in GRASS?  I am having a hard time even
getting data into JGRASS.  I am used to using GRASS (crash course past
couple of weeks).  But I don't know how to use JGRASS - can't get any
data
into JGRASS.  Is there an easy way to gain access to the GRASS mapsets
that
I have already created?  GRASS 6.4RC5 mac os x intel 10.5.x and JGRASS
version from the wiki.  Thanks for all of your help.
I have gone throught the getting started jgrass link , have created a
mapset, exported a raster map from GRASS in ESRI ASCII grid file type,
sucessfully
imported it into JGRASS (or the prompt says so), but it is not
available for interigation.
Thanks agian for all of your help.
kind regards


--
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

-K. Mullis
_______________________________________________
JGrass-users mailing list
[hidden email]
https://dev.fsc.bz.it/cgi-bin/mailman/listinfo/jgrass-users

________________________________________________________________        
Universita` di Trento         Dipartimento di Ingegneria Civile  e  Ambientale/CUDAM
Via Mesiano, 77, 38050  Trento      (ITALIA)                        
E-mail[hidden email]  
Ph: +390461882614-10    Fax:+390461882672
Publications according to ISI: http://www.researcherid.com/rid/B-5395-2008
JGrass (Open Source GIS): http://www.jgrass.org/
GEOtop (Open Source distributed hydrological model):  http://www.geotop.org/
_______________________________________________________________                                                      





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Re: JGRASS in Shell Script

kaytomuriel
In reply to this post by stephen sefick
Hello,
I need to run codes JGRASS through the console! by command line execute JGRASS codes.

one analogy, with GRASS and Shell Script..

this example set the ambient variables, PATH


#!/bin/bash
clear
GISBASE=/usr/lib/grass64
GISRC=$HOME/.grassrc6
GISDBASE=Gis-script
LOCATION_NAME=SRTM2
MAPSET=Apostila2
cat << EOF > $GISRC
GISDBASE: $GISDBASE
LOCATION_NAME: $LOCATION_NAME
MAPSET: $MAPSET
EOF
export GISBASE GISRC
export PATH=$GISBASE/bin:$GISBASE/scripts:$PATH
export LD_LIBRARY_PATH=$GISBASE/lib:$LD_LIBRARY_PATH
export GIS_LOCK=$$
export GRASS_TRUECOLOR=TRUE
export GRASS_PNG_COMPRESSION=9
export GRASS_HEIGHT=640
export GRASS_WIDTH=400
r.in.gdal input=/home/uft/Download/srtm_tutorial_bil/98809673.bil output=srtm


Thanks,

Kayto Muriel
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Re: JGRASS in Shell Script

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