Geografic-Information-System/gui/wxpython/README

wxPython GRASS Graphical User Interface
=======================================

$Date$

1 - REQUIREMENTS

 GRASS GIS >= 6.3
 Python >= 2.4 (Python 3 not supported)
 	Python ElementTree (only for Python <= 2.4)
 wxPython >= 2.8.1.1
 swig >= 1.3.31 (required only for vector digitizer)
 
 Get wxPython 2.8.x packages from:
 * Source: http://www.wxpython.org/download.php
 * Debian GNU/Linux: http://wiki.wxpython.org/InstallingOnUbuntuOrDebian
		     [ deb http://apt.wxwidgets.org/ etch-wx main ]
	             http://www.bitpim.org/developer.html -> "Install wxPython"
 * Fedora: http://www.wxpython.org/download.php
           http://mpa.itc.it/markus/wxpython_rpms/fedora/
 * Mandriva: included in main distribution. but the following fix is
       required:
       ln -s /usr/lib/wxPython/include/wx-2.8/wx /usr/lib64/wx/include/
 * MS-Windows: http://www.wxpython.org/download.php
 * OS X: http://www.wxpython.org/download.php
 * OpenSuSe: http://download.opensuse.org/repositories/Application:/Geo/
 * Ubuntu: deb http://wxpython.wxcommunity.com/apt/ubuntu/dapper /
           deb http://wxpython.wxcommunity.com/apt/ubuntu/feisty /

 Get Python from:
 * Python.org for Source, MS-Windows, OS X: http://www.python.org/download/
 * ActiveStates for AIX, HP-UX, Linux (x86), Linux 64-bit (x86_64 AMD64), Mac OS X,
     Solaris (SPARC), Windows:
     http://www.activestate.com/store/download.aspx?prdGUID=b08b04e0-6872-4d9d-a722-7a0c2dea2758
     
 E.g. On Debian GNU/Linux install these packages:
 apt-get install libwxbase2.8-0 libwxbase2.8-dbg libwxbase2.8-dev \
 	 libwxgtk2.8-0 libwxgtk2.8-dbg libwxgtk2.8-dev \
	 python-wxgtk2.8 wx2.8-doc wx2.8-examples \
	 wx2.8-headers wx2.8-i18n
	 
 MS-WINDOWS ONLY REQUIREMENTS
 
 Python Extensions for MS-Windows >= Build 210
 NumPy >= 1.0.4
 
 Get Python Extensions for MS-Windows from: http://sourceforge.net/project/platformdownload.php?group_id=78018 
 Get NumPy from: http://sourceforge.net/project/showfiles.php?group_id=1369&package_id=175103  

 NVIZ EXTENSION REQUIREMENTS

 PyOpenGL: http://pyopengl.sourceforge.net
 
 On Debian GNU/Linux install package:
 apt-get install python-opengl


2 - STARTUP WITH GRASS INITIALIZATION

If you want to launch wxPython GUI automatically when you start
GRASS, edit your .grassrc7 file to replace

GRASS_GUI: tcktk (or whatever you have here)

with

GRASS_GUI: wxpython

or easier start new GRASS session with -wxpython switch.

$ grass70 -wxpython


3 - STARTUP FROM GRASS TERMINAL

Simply run

$ g.gui wxpython

from the GRASS terminal.

You can also specify workspace file to load on startup.

$ g.gui gui=wxpython workspace=myworkspace.gxw


4 - CLI Display scripts

Note: This section is out-dated!

This is going to be replacement for command line tools like d.rast and
d.vect.

Now add directory "scripts" in gui directory to your $PATH. These
little programs should later go to GRASS Scripts directory or became
Python scripts or C programs. Now they are only small BASH wrappers
which can be easily and fast customized.

$~ export PATH=scripts/:$PATH

Start GRASS:

$~ grass70 ~/grassdata/spearfish60/user1

Use command p.mon (shell script in gui/scripts directory) to start map
display:

GRASS> p.mon anything

After a while, new window should appear.  If this is your case, add some
raster layer to the map display:

GRASS> p.rast aspect

What about a bit transparency?

GRASS> p.rast elevation.dem opacity=0.5

And try the vector layer too

GRASS> p.vect roads

NOTE: only map name is currently supported. No other option will influence
      the map layout

Alternatively you can use more universal p.cmd:

GRASS> p.cmd "d.rast map=elevation.dem@PERMANENT catlist=1300-1400 -i"

You should be able to zoom && pan through the map, once the layers are
displayed. You should be also able to store the display content as well as
clear the display and start from scratch.


5 - DEBUGGING

To enable GUI debug messages on given level set GRASS_DEBUG_WX
environment variable, e.g.

$ export GRASS_WX_DEBUG=3


6 - ICON THEMES

Currently two icon themes are available:

    * original GRASS (based on TCL/TK GUI prototype)
    * Silk-based (default)

User can change icon theme in Preferences dialog
('Config->Preferences').


7 - VECTOR DIGITIZER

To enable digitizer you need to compile 'vdigit'
component. Note that you must configure GRASS with C++ (--with-cxx),
Python (--with-python) and wxWidgets (--with-wxwidgets) support.