[GRASS-user] NVIZ use in wxpython GRASS6.4

[Michael Barton]

Franz,

Currently, the wxPython digitizer and integrated wxPython 3D display  
does not work in Windows due to issues in compiling the C++ code,  
swig.python, and python in a windows environment. Volunteers are  
needed to help the development team solve these issues.

Alternatively you can use the digitizer and 3D module NVIZ in TclTk  
from Windows. I'm not sure about launching the TclTk digitizer, but to  
launch NVIZ, you must do it from the msys command line due to a  
problem running scripts in Windows. To start it, you simply need to  
type...

nviz elevation=map[,map,map,...] [color=map[,map,map,...]]

where "map" is a raster map that you want to visualize and optionally  
use for coloring the visualization.

Here is the full syntax

  nviz [-qkxv] [elevation=name[,name,...]] [color=string[,string,...]]
    [vector=string[,string,...]] [points=string[,string,...]]
    [volume=string[,string,...]] [path=string] [script=string]
    [state=string] [--verbose] [--quiet]

Flags:
   -q   Quickstart - Do not load any data
   -k   Exit after completing script launched from the command line
   -x   Start in Demo mode (skip the "please wait" message)
   -v   Verbose module output
  --v   Verbose module output
  --q   Quiet module output

Parameters:
   elevation   Name of raster map(s) for Elevation
       color   Name of raster map(s) for Color
      vector   Name of vector lines/areas overlay map(s)
      points   Name of vector points overlay file(s)
      volume   Name of existing 3d raster map
        path   Set alternative panel path
      script   Execute script file at startup
       state   Load previously saved state file

You can also type...

nviz -q

to launch it and then add maps once it is open.

I think that the nviz launch and related script running issue is  
relatively easy to solve, but needs some people who know windows to  
work on it.

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 2, 2009, at 9:34 AM, grass-user-request at lists.osgeo.org wrote:

> Date: Wed, 2 Dec 2009 15:45:52 +0000
> From: Franz Schiller <franzschiller1975 at gmail.com>
> Subject: [GRASS-user] NVIZ use in wxpython GRASS6.4
> To: grass-user at lists.osgeo.org
> Message-ID:
>        <a75b68d60912020745l55569a39l6648a00bbfba89b6 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Good evening everyone
>
> Maybe this sound like a (another!) newbie  question but when I try to
> visualize data in 3D, in wxpython Map Display, I get a window saying:
> - Unable to switch to 3D display mode
> - The NVIZ python extension was not found or loaded properly.
> - Switching back to 2d display mode.
> Details: No module named grass6_wxnviz
>
> But at File/NVIZ (requires tcl/tk) a menu is opened requesting  
> elevation,
> raster colors, points and vectors and when I run the following is  
> displayed
> in output command window:
>
> nviz elevation=elevation_shade at PERMANENT,elevation at PERMANENT
>
> (Wed Dec 02 15:04:49 2009) Command terminated (0 sec)
>
>
> But nothing happened...
>
> Question: Since it says that it requires tcl/tk shouldn't it open a  
> tcl/tk
> window? Or am I wrong?
>
> Thank you very much in advance
> Best regards,
>
> Franz Shciller