[GRASS-user] (no subject)

[Rodolfo Del Prado Quiroz]

Favor desuscribirme de esta lista, gracias

RODOLFO A. DEL PRADO QUIROZ
Arquitecto Universidad Nacional de Colombia
MSc en Medio Ambiente y Desarrollo
Profesional Universitario
Alcaldia de Medellín
Celular  3007794381
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Re: [GRASS-user] (no subject)

[Markus Neteler]

Hi,

On Thu, Dec 6, 2018 at 9:38 AM SHIVAM RAI  wrote:
>
> Hi,
> please don't delay.
> please answer the question that i have asked recently

you still did not send which operating system you use. In another
email to me you stated that it is GRASS GIS 7.4.0.

> when executing "d.tile" and "d.what.rast" in console or cmd

Please elaborate "in console or cmd".

> error: not  implemented in the wxGUI. try to add as a layer command.
> thanks

Markus
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Re: [GRASS-user] (no subject)

[Sajid Pareeth]

Dear Shivam rai

There is no module called "d.tile", So it won't work.
What did you try with d.what.rast? Please post the command you tried !!
Regards

Sajid


On Thu, Dec 6, 2018 at 9:38 AM SHIVAM RAI  wrote:

> Hi,
> please don't delay.
> please answer the question that i have asked recently
> when executing "d.tile" and "d.what.rast" in console or cmd
> error: not  implemented in the wxGUI. try to add as a layer command.
> thanks
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Re: [GRASS-user] (no subject)

[SHIVAM RAI]

Hi
Please Reply Me
On Thu, Dec 6, 2018 at 2:07 PM SHIVAM RAI  wrote:

> Hi,
> please don't delay.
> please answer the question that i have asked recently
> when executing "d.tile" and "d.what.rast" in console or cmd
> error: not  implemented in the wxGUI. try to add as a layer command.
> thanks
>
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[GRASS-user] (no subject)

[SHIVAM RAI]

Hi,
please don't delay.
please answer the question that i have asked recently
when executing "d.tile" and "d.what.rast" in console or cmd
error: not  implemented in the wxGUI. try to add as a layer command.
thanks
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[GRASS-user] (no subject)

[MILLER, GWEN J]

I’ve tried unsuccessfully to add a satellite to the i.atcorr tool. I followed 
the steps listed on the page, but I cannot get the actual integration of the 
tool to work. I have all the needed information to add the tool. It’s for 
Planet’s Dove satellites.  Any help is greatly appreciated! (they have a few 
types of satellites, and for now at least I only need the one that starts with 
0f in the excel document.

Also I have the band information for each of the 4 bands

Planet Blue band B1 (455nm - 415nm)
Planet Green band B2 (500nm - 590nm)
Planet Red band B3 (590nm - 670nm)
Planet NIR band B4 (780nm - 860nm)

Thanks for the help,
Gwen


relative_spectral_response_median_per_ps_sat_group.xlsx
Description: relative_spectral_response_median_per_ps_sat_group.xlsx
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Re: [GRASS-user] (no subject)

[Nikos Alexandris]

Julita Dudek:


Hello,


Hello Julita,


I use i.atcorr modul, but I have one question:
- in the "run_i_atcorr(radiance_flag, input_band, input_range, elevation,
visibility, parameters, output, output_range)" party,

what is the input_range output_range, you take this from MTL.txt or from
Radiance min and max values, or you fixed it 1:255 (because of DN)?


I think the reason for the input and output range(s), being set by
default to [0,255], is the kind of "need" at the time of the module's creation.
Most programs and applications were somewhat and somehow "restricted"
to 8-bit.  In other words, yes, "because of DN"s ranging in [0,255] for various
sensors.

This is, in my view, something we need to rethink about, given the many
different sensors and the need to update programs to be able to deal with more
than 8-bit data.


Input range

If the input data are:

- Spectral Radiance values, it greatly varies and depends on the sensor
 and the band.  Since you mention "MTL.txt", which implies you are handling
 Landsat data, in my attempt to automate the process for Landsat
 imagery, (see 
https://github.com/NikosAlexandris/i.landsat.atcorr/blob/master/i.landsat.atcorr.py#L419)
 the actual minimum and maximum values for each input band are set. I think
 this is no harm. Though having some nominal input range might be better (?).

 (
 Looking at the definition of Spectral Radiance (which derives from radiance),
 the units are: W / m^2 / str / nm, that is: Watts per Square meter per
 Steradian per Nanometer.

 Obviously, the "dynamic" range of spectral radiance values, depend on a
 sensor's radiometric characteristics.  Worth mention (?), a sensor's
 capacity may be appreciated via its bitness: how many bits is the sensor
 capable of (digitising the incident electromagnetic energy)?  6, 8, 10, 11 or
 even 12? And, practically, for users, what is the bitness of the distributed
 products (usually 8 or 16-bit)?
 )

- reflectance values, then it is [0,1].


Output range

The output of i.atcorr, is *always* Spectral Reflectance.  The option to
rescale is, im my understanding, a "helper" to get the data ready for
subsequent processing with modules or else that expect values ranging in
[0,255].  In this sense, the default [0,255] is "correct" as long as the actual
input is equal or less than 8-bit  and/or  an 8-bit output is wanted  _and_
there is less care to loose radiometric detail in case the input data are of
more than 8-bits.

In general, I keep the output in [0,1], as is the module's intended
behaviour (see
https://github.com/NikosAlexandris/i.landsat.atcorr/blob/master/i.landsat.atcorr.py#L435).


The question is "what is the (end-)user's need?"

In case the input is of >8-bit and the subsequent purpose is more than simple
visualisations, then it is better to think about how to proceed and keep the
output being (corrected) spectral radiance ranging in [0,1]. Rescale
accordingly, later on depending on if and what exactly is needed.  Or directly
(re)set the output to something larger than [0,255] via the rescale option.


Directed to @grass-dev

I think it is good to update the description of the module's input and output
elements as well as rethink the output scale. I suggest at the very least
something like:

--%<---
svn diff main.cpp

Index: main.cpp
===
--- main.cpp(revision 69474)
+++ main.cpp(working copy)
@@ -463,6 +463,7 @@
struct Options opts;

opts.iimg = G_define_standard_option(G_OPT_R_INPUT);
+opts.iimg->description = _("Spectral radiance (or reflectance with -r) input 
image");

opts.iscl = G_define_option();
opts.iscl->key = "range";
@@ -490,12 +491,13 @@
opts.icnd->description = _("Name of input text file with 6S parameters");

opts.oimg = G_define_standard_option(G_OPT_R_OUTPUT);
+opts.oimg->description = _("Spectral reflectance output image");

opts.oscl = G_define_option();
opts.oscl->key = "rescale";
opts.oscl->type = TYPE_INTEGER;
opts.oscl->key_desc = "min,max";
-opts.oscl->answer = "0,255";
+opts.oscl->answer = "0,1";
opts.oscl->required = NO;
opts.oscl->description = _("Rescale output raster map");
opts.oscl->guisection = _("Output");
--->%--


I suggest to further customize descriptions of "input" and "output"
options, i.e. to modify the "Name of..." (which derives from the standard set of
options), for most imagery modules. Why not being explicit about what the
expected input is?

Nikos



Thank you very much for your help.

Best regards
--
Julita Dudek
UMR 5600 Environnement Ville Société, CNRS
Centre de recherche en géographie et aménagement, LCRE, Université Lyon 3
0649 07 25 75

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[GRASS-user] (no subject)

[Julita Dudek]

Hello,
I use i.atcorr modul, but I have one question:
- in the "run_i_atcorr(radiance_flag, input_band, input_range, elevation,
visibility, parameters, output, output_range)" party,

 what is the input_range output_range, you take this from MTL.txt or from
Radiance min and max values, or you fixed it 1:255 (because of DN)?

Thank you very much for your help.

Best regards
-- 
Julita Dudek
UMR 5600 Environnement Ville Société, CNRS
Centre de recherche en géographie et aménagement, LCRE, Université Lyon 3
0649 07 25 75
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Re: [GRASS-user] (no subject)

[alassane toure]

Thanks Anna, it worked!

On Fri, Aug 12, 2016 at 11:31 AM, Anna Petrášová 
wrote:

> On Fri, Aug 12, 2016 at 1:05 PM, alassane toure  wrote:
> > Group,
> > I am running a grass-python script but when i replace a variable argument
> > within the command the script does not work
> >
> > The following works...
> > grass.run_command('r.in.gdal',
> > input='/home/alassane/Data/SanbornCD/tile/newconstr_mask.tif',
> > output='construction')
> >
> > But not this...
> > command="'r.in.gdal', input='"+sys.argv[5]+"', output='construction'"
> > print 'r.in.gdal command argument... = %s\n ' % command
> > grass.run_command(command)
> >
> > print 'r.in.gdal command argument... = %s\n ' % command
> > r.in.gdal command argument... = 'r.in.gdal',
> > input='/home/alassane/Data/SanbornCD/tile/newconstr_mask.tif',
> > output='construction'
> >
> >
> > The following also works...
> > command ="/home/alassane/Programs/gdal/demclass1"+" "+infile1+"
> "+infile2+"
> > "+sys.argv[3]+" "+outfile
> > os.system(command)
> >
> > Your help is appreciated.
>
> Perhaps this?
>
> grass.run_command('r.in.gdal', input=sys.argv[5],  output='construction')
>
> Best,
> Anna
>
> >
> > Regards,
> > Alassane
> >
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Re: [GRASS-user] (no subject)

[Anna Petrášová]

On Fri, Aug 12, 2016 at 1:05 PM, alassane toure  wrote:
> Group,
> I am running a grass-python script but when i replace a variable argument
> within the command the script does not work
>
> The following works...
> grass.run_command('r.in.gdal',
> input='/home/alassane/Data/SanbornCD/tile/newconstr_mask.tif',
> output='construction')
>
> But not this...
> command="'r.in.gdal', input='"+sys.argv[5]+"', output='construction'"
> print 'r.in.gdal command argument... = %s\n ' % command
> grass.run_command(command)
>
> print 'r.in.gdal command argument... = %s\n ' % command
> r.in.gdal command argument... = 'r.in.gdal',
> input='/home/alassane/Data/SanbornCD/tile/newconstr_mask.tif',
> output='construction'
>
>
> The following also works...
> command ="/home/alassane/Programs/gdal/demclass1"+" "+infile1+" "+infile2+"
> "+sys.argv[3]+" "+outfile
> os.system(command)
>
> Your help is appreciated.

Perhaps this?

grass.run_command('r.in.gdal', input=sys.argv[5],  output='construction')

Best,
Anna

>
> Regards,
> Alassane
>
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[GRASS-user] (no subject)

[alassane toure]

Group,
I am running a grass-python script but when i replace a variable argument
within the command the script does not work

The following works...
grass.run_command('r.in.gdal', input='/home/alassane/Data/
SanbornCD/tile/newconstr_mask.tif', output='construction')

But not this...
command="'r.in.gdal', input='"+sys.argv[5]+"', output='construction'"
print 'r.in.gdal command argument... = %s\n ' % command
grass.run_command(command)

print 'r.in.gdal command argument... = %s\n ' % command
r.in.gdal command argument... = 'r.in.gdal', input='/home/alassane/Data/
SanbornCD/tile/newconstr_mask.tif', output='construction'


The following also works...
command ="/home/alassane/Programs/gdal/demclass1"+" "+infile1+" "+infile2+"
"+sys.argv[3]+" "+outfile
os.system(command)

Your help is appreciated.

Regards,
Alassane
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[GRASS-user] (no subject)

[Robert Kuszinger]

Hello,


I've tried to use r.surf.idw on a large raster. It works well in 6.4.4.

I've moved to 7.1 SVN, where everything is marvellous, at least what I use,
except r.surf.idw which creates the same output as the impot was.
I've also svn-ed and compiled 7.0.1, where r.surf.idw did the same.

Namely:

r.surf.idw --overwrite --verbose input=output_temp1 output=output_temp2
npoints=7

when finished, output_temp2 is the same as output_temp1 and no
interpolation seems to be done.

One more big difference:
6.4.4 uses less than 2G ram and finishes in a few minutes. In 7.0 and 7.1
it eats all 6GB RAM, 4 GB SWAP and runs much-much longer, understandably...

Should I stay with 6.4.4?

thnaks
Robert
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[GRASS-user] (no subject)

[Afsal Iqubal]

Hello
 i want to involve in grass gevelopment.i am a S4 B.Tech CS  student. which
version is prefered, grass gis from ubuntu repo or grass latest 7.0. How to
build from source.
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Re: [GRASS-user] (no subject)

[Helmut Kudrnovsky]

How to build from source.

have a look in the wiki:

http://grasswiki.osgeo.org/wiki/Compile_and_Install



-
best regards
Helmut
--
View this message in context: 
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Sent from the Grass - Users mailing list archive at Nabble.com.
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Re: [GRASS-user] (no subject)

[Markus Neteler]

On 2/9/13, Afsal Iqubal afsal.iqu...@gmail.com wrote:
 Hello
  i want to involve in grass gevelopment.i am a S4 B.Tech CS  student. which
 version is prefered, grass gis from ubuntu repo or grass latest 7.0. How to
 build from source.


Please download the GRASS 7 source code from SVN trunk which is the
development version.
Your contributions will be appreciated.

Markus
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[GRASS-user] (no subject)

[dave adams]

http://www.ganamossucaso.com/dfgqp.html___
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[GRASS-user] (no subject)

[José Carlos Guerrero Antúnez]

Hi,

I need to obtain this format from shapefile, how do I?

ESRI ASCII Grid Format

 (Copied from the ArcWorkstation 8.3 Help File)

The ASCII file must consist of header information containing a set of
keywords, followed by cell values in row-major order. The file format is

  NCOLS xxx
  NROWS xxx
  XLLCENTER xxx | XLLCORNER xxx
  YLLCENTER xxx | YLLCORNER xxx
  CELLSIZE xxx
  {NODATA_VALUE xxx}
  row 1
  row 2
  ...

  row n

where xxx is a number, and the keyword nodata_value is optional and
defaults to -. Row 1 of the data is at the top of the grid, row 2 is
just under row 1 and so on. For example:

  ncols 386
  nrows 286
  xllcorner -128.66338
  yllcorner 13.7502065
  cellsize  0.2
  NODATA_value  -
  - - -123 -123 -123 - - - - - ...

  - - -123 -123 -123 - - - - - ...
  - - -117 -117 -117 -119 -119 -119 -119 -119 - ...
  ...

The nodata_value is the value in the ASCII file to be assigned to those
cells whose true value is unknown. Cell values should be delimited by
spaces. No carriage returns are necessary at the end of each row in the
grid. The number of columns in the header is used to determine when a new
row begins. The number of cell values must be equal to the number of rows
times the number of columns.


I'm working
GRASS 6.4.2 (2012)
OSX 10.6.8

Many thanks,


Jose C. Guerrero


-- 

Dr. José Carlos Guerrero
Laboratorio de Desarrollo Sustentable y Gestión Ambiental del Territorio
(LDSGAT)
Instituto de Ecología y Ciencias Ambientales (IECA)
Facultad de Ciencias
Universidad de la República
Montevideo-URUGUAY

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Re: [GRASS-user] (no subject)

[Hamish]

José wrote:
 I need to obtain this format from shapefile, how do I?
 ESRI ASCII Grid Format

r.out.arc


but shapefiles are vector data model and Arc ASCII grids are raster
data model, so you would have to translate between the two with
v.to.rast or v.out.ascii+r.in.xyz, or interpolate with v.surf.*
first.


Hamish
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[GRASS-user] (no subject)

[Huub Munstege]

a 
href=http://dehradun.org.in/wp-content/plugins/extended-comment-options/02efpk.html;
 
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[GRASS-user] (no subject)

[Helmut Kudrnovsky]

Roger Bivand:
I don't know how you you started the R session. I hope you started R within
a running GRASS session, as you seem to be using an existing location.

in http://grass.osgeo.org/wiki/R_statistics#MS_Windows there are some hints 
(Usage II) how you can start 
R within a GRASS session in windows with the wingrass6.4.x-installer 
(http://grass.osgeo.org/grass64/binary/mswindows/native/
or http://wingrass.fsv.cvut.cz/grass64/). the example above in the wiki is with 
wingrass64x in text-mode.

FYI with wingrass70 (http://wingrass.fsv.cvut.cz/grass70/) you can start a 
R-session within a GRASS session also in wingrass-GUI-mode.

best regards
Helmut

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[GRASS-user] (no subject)

[Camilo Alcantara Concepcion]

Pedro Camilo Alcantara Concepcion 

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[GRASS-user] (no subject)

[Hanlie Pretorius]

Hi,

I'm running GRASS through the QGIS (v1.0.5) interface on Windows XP.
The GRASS folder in the QGIS installation says 'grass-6.4.0svn'.

I have a polygon layer with 22 polygons and a raster slope layer. When
I run v.rast.stats with these two layers, two of the polygons have
NULL values in the columns that v.rast.stats adds to the vector layer.
These polygons are not the smallest or on the edges and I've used this
procedure successfully before.

Below are the region, v.info, r.info v.rast.stats outputs. Can anyone
perhaps see why this happens?

g.region -p
projection: 99 (Transverse Mercator)
zone:   0
datum:  ** unknown (default: WGS84) **
ellipsoid:  wgs84
north:  -3122190
south:  -3155760
west:   -66510
east:   -33390
nsres:  90
ewres:  90
rows:   373
cols:   368
cells:  137264

v.info map=subs22_clean...@chi
 ++
 | Layer:   subs22_clean...@chi
 | Mapset:  CHI
 | Location:c83a_tm_29deg_e
 | Database:F:\Hanlie\grassdata
 | Title:
 | Map scale:   1:1
 | Map format:  native
 | Name of creator: hanlie
 | Organization:
 | Source date: Wed Nov 17 13:24:57 2010
 ||
 |   Type of Map:  vector (level: 2)
 |
 |   Number of points:   0   Number of areas:  22
 |   Number of lines:0   Number of islands:1
 |   Number of boundaries:   822 Number of faces:  0
 |   Number of centroids:22  Number of kernels:0
 |
 |   Map is 3D:  No
 |   Number of dblinks:  1
 |
 | Projection: Transverse Mercator
 |   N:  -3122280S:  -3155670
 |   E:-33570W:-66510
 |
 |   Digitization threshold: 0
 |   Comments:
 |
 ++

r.info map=c83a_dem_srtm_90m_sl...@permanent
 ++
 | Layer:c83a_dem_srtm_90m_sl...@perma  Date: Wed Nov 03 16:21:11 2010
 | Mapset:   PERMANENT  Login of Creator: Administrator
 | Location: c83a_tm_29deg_e
 | DataBase: F:\Hanlie\grassdata
 | Title:percent slope ( c83a_dem_srtm_90m_slope )
 | Timestamp: none
 |---
 |
 |   Type of Map:  raster   Number of Categories: 255
 |   Data Type:FCELL
 |   Rows: 373
 |   Columns:  368
 |   Total Cells:  137264
 |Projection: Transverse Mercator
 |N:   -3122190S:   -3155760   Res:90
 |E: -33390W: -66510   Res:90
 |   Range of data:min = 0.023858  max = 110.669037
 |
 |   Data Source:
 |raster elevation file c83a_dem_srtm_...@permanent
 |
 |
 |   Data Description:
 |generated by r.slope.aspect
 |
 |   Comments:
 |slope map elev = c83a_dem_srtm_...@permanent
 |zfactor = 1.00 format = percent
 |min_slp_allowed = 0.00
 |
 ++

v.rast.stats raster=c83a_dem_srtm_90m_sl...@permanent
vector=subs22_clean...@chi =area =1 colprefix=slope

Statistics calculated from raster map  and uploaded to attribute
table of vector map .

Done.
Successfully finished


Thanks
Hanlie
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[GRASS-user] (no subject)

[Helmut Kudrnovsky]

Hi,

It's a return of an old bug. It was fixed 8 months a go.

[http://trac.osgeo.org/grass/ticket/980]

WinGRASS gurus - please change any other places where HTML browser is
hardcoded to some .exe file. See ticket #980 for details.

Maris.

I've fixed ticket 980 in all cases in the nsis-installer, so the available 
standalone WinGrass-installer should
have incorporated all fixes.

AFAIK this is an osgeo4w issue. in the grass-starting routine there are 
following variables set
in C:\OSGeo4W\etc\ini\grass

set GISBASE=%OSGEO4W_ROOT%\apps\grass\grass-6.4.0svn
set WINGISBASE=%OSGEO4W_ROOT%\apps\grass\grass-6.4.0svn
set GRASS_SH=%OSGEO4W_ROOT%\apps\msys\bin\sh.exe
set GRASS_WISH=%OSGEO4W_ROOT%\bin\wish.exe
set GRASS_PYTHON=%OSGEO4W_ROOT%\bin\python.exe
set GRASS_PROJSHARE=%OSGEO4W_ROOT%\share\proj
set GRASS_HTML_BROWSER=%PROGRAMFILES%\Internet Explorer\iexplore.exe

so this should be fixed there. please open a ticket there.

best regards
Helmut
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[GRASS-user] (no subject)

[Matteo Toro]

I used the r.in.gdal to import the raster map, and then i pressed the button 
add raster layer, to add the raster file. But anything happened..the output 
says that everything matches but is not possible to add any raster file and 
even to display it.

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Re: [GRASS-user] (no subject)

[Rich Shepard]

On Fri, 29 Jan 2010, Matteo Toro wrote:


I used the r.in.gdal to import the raster map, and then i pressed the
button add raster layer, to add the raster file. But anything
happened..the output says that everything matches but is not possible to
add any raster file and even to display it.


Matteo,

  I assume that you're using the wxPython UI for this.

  There are three distinct steps involved: 1) import the raster map; 2)
indicate by the checkbox that you want the imported map added to the list of
loaded layers; 3) right-click on the layer(s) you want displayed and select
the option to zoom and display the selected layers.

  The map is not automatically displayed upon import.

Rich
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[GRASS-user] (no subject)

[ambrish dhaka]

dear all,
I have installed GRASS and QGIS on Fedora 11. The GRASS problem 
is quoted as below. It gets the following message and once it has crashed too.
=
Starting GRASS ...
/usr/lib/python2.6/site-packages/wx-2.8-gtk2-unicode/wx/_core.py:14450: 
UserWarning: wxPython/wxWidgets release number mismatch
  warnings.warn(wxPython/wxWidgets release number mismatch)
==


The Other QGIS issue is that it shows that it has been installed but it wont 
run from the Applications menu.  And, as I try to run it from console by typing 
qgis it says Segmentation fault.

===

Thanks!
Ambrish Dhaka

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[GRASS-user] (no subject)

[Wim de Vries]

Hamish wrote:
 Wim de Vries wrote:

 (v.5 on suse 10.3 as well as v.6.2 on debian lenny).
 I came to the point of defining a new location, but then the list for
 projections does not show Lambert conformal or mercator.


 it's there. lcc, merc, etc.

Ok.Thanks a lot. I'll have another try..


 Next, I cannot get out of the list. Had to hit CTRL-C to completely
 drop out of the app.


 q

 this is something which to me is rather annoying in the debian package.
 they/we change the default pager (press any key for next page) to be
 the 'less' program instead of grass's default which is 'more'. the result
 is that you have to be used to it and know to press 'q' to get out of the
 list. with 'more' all you have to do is bash the spacebar and enter enough
 times and you get out automatically.

 sorry for the inconvenience. you can change it back to 'more' or whatever
 by setting the GRASS_PAGER variable, see the grass variables help page.

 for lenny you should get the latest grass, gdal, and proj packages from
 debian's www.backports.org. then you can have a pretty recent version to
 play with without much more than an apt-get call.


 Hamish






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[GRASS-user] (no subject)

[Ned Horning]

Markus,

Thanks for the feedback. The advice is very helpful. I've been slowly getting
used to GRASS but still have a way to go. If I can stick with it I hope to learn
enough to create a week-long GRASS for conservation workshop that we can offer
at our research station in southeastern Arizona and in our projects in SE Asia.


Here are some clarifying remarks and a few more questions if anyone can help.

 It will work. Everything takes time but I don't expect problems. GRASS 6.2

 has been used for 10GB images, since then more testing and fixing
 happened. Best is to use the latest 6.4.0RC2 version.
   
I'll see if I can get this version set up so it doesn't conflict with the GRASS
version bundled with QGIS. My linux (Ubuntu) skill are also still quite poor
but I'm learning (again).
 4) Georeference shrub / non-shrub map to reference Landsat images [might
do
 this with ENVI or ERDAS unless GRASS is a good choice]
 

 Also unclear to me: above you say that you generate the shrub / non-shrub
map
 in GRASS, then it is already geocoded. Or not?
   
Sorry - I wasn't very clear. The images I'm working with are geocoded but the
image-to-image registration is poor. I plan to project all of the images into
the same projection (some are in UTM and some use different datums) and then
do an image-to-image registration. I wasn't sure if GRASS would be an efficient
tool to do the image-to-image registration. I should just try it.
   
 5) Create percent shrub cover map using regression tree algorithm, Landsat
imagery,
 and shrub location  data from the high resolution shrub / non-shrub map.
I will
 probably do this using proprietary software unless I can do it easily in
GRASS
 since a method has been established for another project.
 

 Of course GRASS-R-extention comes to mind for all kinds of statistics.
I'm considering using GRASS for this but would like to know if anyone has used
GRASS with R as the regression tree engine. I have a vague recollection of 
someone
doing this several years ago but didn't find anything after a quick search.
I suppose it would require getting training data from GRASS to R to generate
the regression tree and then port the tree results back to GRASS to apply the
rules to the dataset. It would be great if an interface already existed to do
this but if not I can probably figure it out. I'm just not sure how long it
will take me.

All the best, 

Ned

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[GRASS-user] (no subject)

[Avila Jose]

unsubscribe


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Re: [GRASS-user] (no subject)

[Nikos Alexandris]

On Mon, 2008-12-01 at 13:46 -0800, Avila Jose wrote:
 unsubscribe
 
 
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[*] http://lists.osgeo.org/mailman/listinfo/grass-user

Dear Jose,

you can use the link [*] above to unsubscribe yourself :-). Once you
visit this page you will find the unsubscribe button on the bottom.

Kind regards, Nikos

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[GRASS-user] (no subject)

[Patrick Schirmer]

Dear GRASS-users,

does someone of you know how to export a GRASS-polygone layer to CAD polygones? 

I used GRASS6.3.0 to create closed polygones from a 'unclean' dwg file and want 
to export this GIS-file to go on drawing within a CAD-programm (we're an 
architecure/urban planner office and my collegues are not used to use GIS).

I tried v.out.dxf , but this does explode the polygones to single lines, so it 
ain't working. Dwg might be a solution but there's no v.out.dwg in my GRASS,  
converters from dxf to dwg are not free of license and the registration in 
opendwg also is not free of charge.

Thanks for your help,
 
Patrick Schirmer
-- 
GMX startet ShortView.de. Hier findest Du Leute mit Deinen Interessen!
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Re: [GRASS-user] (no subject)

[MS]

Can your CAD system read shapefiles?

Mark

~ iPhone'd

On Sep 29, 2008, at 3:33 AM, Patrick Schirmer [EMAIL PROTECTED]  
wrote:



Dear GRASS-users,

does someone of you know how to export a GRASS-polygone layer to CAD  
polygones?


I used GRASS6.3.0 to create closed polygones from a 'unclean' dwg  
file and want to export this GIS-file to go on drawing within a CAD- 
programm (we're an architecure/urban planner office and my collegues  
are not used to use GIS).


I tried v.out.dxf , but this does explode the polygones to single  
lines, so it ain't working. Dwg might be a solution but there's no  
v.out.dwg in my GRASS,  converters from dxf to dwg are not free of  
license and the registration in opendwg also is not free of charge.


Thanks for your help,

Patrick Schirmer
--
GMX startet ShortView.de. Hier findest Du Leute mit Deinen Interessen!
Jetzt dabei sein: http://www.shortview.de/[EMAIL PROTECTED]
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[GRASS-user] (no subject)

[Christian Schwartze]

Dear GRASS users,

could somebody help me to find some solution for the following task?
I have a raster map representing many distinct areas (MAP_1) and a second int
raster with specific values (MAP_2). The result map should contain the same
areas of MAP_1 but with the max MAP_2 value of each area as IDs. I tried some
approaches with r.mapcalc but I don't know how to code the region aspect of
MAP_1 into r.mapcalc.

MAP_1   MAP_2   ---MAP_MAX
-   -   ---

32  5266723974  95
111222  1429784155  ---777555
111322  4152763923  777955
12  4125718443  75

Thanks a lot for any help!
Regards,
Christian.




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RE: [GRASS-user] (no subject)

[Moskovitz, Bob]

Hi Dylan,

It looks like r.param.scale is the module he's looking for...thanks!

Bob

 -Original Message-
 From: Dylan Beaudette [mailto:[EMAIL PROTECTED]
 Sent: Tuesday, June 03, 2008 2:32 PM
 To: grass-user@lists.osgeo.org
 Cc: Moskovitz, Bob
 Subject: Re: [GRASS-user] (no subject)
 
 
 Hi Bob,
 
 Have a look at r.param.scale -- this module allows you to 
 specify the window 
 size.
 
 Cheers,
 
 Dylan
 
 On Tuesday 03 June 2008, Moskovitz, Bob wrote:
  Hello list,
 
  A coworker was asking me if I know of a slope curvature 
 algorithm that lets
  you adjust the kernel size.  Does GRASS have such a program?
 
  Bob
 
  Bob Moskovitz
  Seismic Hazard Zonation Project
  California Geological Survey
  http://www.conservation.ca.gov/cgs/shzp?xml:namespace 
 prefix = o ns =
  urn:schemas-microsoft-com:office:office /
 
  CONFIDENTIALITY NOTICE: This communication is intended only 
 for the use of
  the individual or entity to which it is addressed. This 
 message contains
  information from the State of California, California 
 Geological Survey,
  which may be privileged, confidential and exempt from 
 disclosure under
  applicable law, including the Electronic Communications 
 Privacy Act. If the
  reader of this communication is not the intended recipient, 
 you are hereby
  notified that any dissemination, distribution, or copying of this
  communication is strictly prohibited.
 
 
 
 -- 
 Dylan Beaudette
 Soil Resource Laboratory
 http://casoilresource.lawr.ucdavis.edu/
 University of California at Davis
 530.754.7341
 
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[GRASS-user] (no subject)

[Moskovitz, Bob]

Hello list,
 
A coworker was asking me if I know of a slope curvature algorithm that lets you 
adjust the kernel size.  Does GRASS have such a program?
 
Bob

Bob Moskovitz 
Seismic Hazard Zonation Project
California Geological Survey 
http://www.conservation.ca.gov/cgs/shzp?xml:namespace prefix = o ns = 
urn:schemas-microsoft-com:office:office /

CONFIDENTIALITY NOTICE: This communication is intended only for the use of the 
individual or entity to which it is addressed. This message contains 
information from the State of California, California Geological Survey, which 
may be privileged, confidential and exempt from disclosure under applicable 
law, including the Electronic Communications Privacy Act. If the reader of this 
communication is not the intended recipient, you are hereby notified that any 
dissemination, distribution, or copying of this communication is strictly 
prohibited.

 
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Re: [GRASS-user] (no subject)

[Dylan Beaudette]

Hi Bob,

Have a look at r.param.scale -- this module allows you to specify the window 
size.

Cheers,

Dylan

On Tuesday 03 June 2008, Moskovitz, Bob wrote:
 Hello list,

 A coworker was asking me if I know of a slope curvature algorithm that lets
 you adjust the kernel size.  Does GRASS have such a program?

 Bob

 Bob Moskovitz
 Seismic Hazard Zonation Project
 California Geological Survey
 http://www.conservation.ca.gov/cgs/shzp?xml:namespace prefix = o ns =
 urn:schemas-microsoft-com:office:office /

 CONFIDENTIALITY NOTICE: This communication is intended only for the use of
 the individual or entity to which it is addressed. This message contains
 information from the State of California, California Geological Survey,
 which may be privileged, confidential and exempt from disclosure under
 applicable law, including the Electronic Communications Privacy Act. If the
 reader of this communication is not the intended recipient, you are hereby
 notified that any dissemination, distribution, or copying of this
 communication is strictly prohibited.



-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341
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[GRASS-user] (no subject)

[Lukas Rohrer]

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]
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Re: [GRASS-user] (no subject)

[Andrea Ricci]

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

Re: [GRASS-user] (no subject)

[Hamish]

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



  

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[GRASS-user] (no subject)

[Nikos Alexandris]

I am curious if any of you experienced developers has ever thought about
using GPU as a CPU (or Co-CPU) in order to boost calculation speed... ?
Is it or is not possible?

http://www.gpgpu.org/

Cheers,

Nikos



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Re: [GRASS-user] (no subject)

[Glynn Clements]

Nikos Alexandris wrote:

 I am curious if any of you experienced developers has ever thought about
 using GPU as a CPU (or Co-CPU) in order to boost calculation speed... ?
 Is it or is not possible?

Most of GRASS' performance issues arise from the fact that code
simplicity takes precedence over perfomance.

Writing optimised code requires a fair amount of effort, and
maintaining optimised code is even worse. Consequently, most of GRASS
is written without even basic optimisations, let alone more extreme
measures such as using a GPU as a co-processor.

-- 
Glynn Clements [EMAIL PROTECTED]
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[GRASS-user] (no subject)

[ec . jkd]

hi,
can anyone tell that whether i can add rivers and trees on the road map for 
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