[GRASSLIST:6754] Re: tcl-tk or qgis ?

[Jachym Cepicky]

On Tue, May 10, 2005 at 11:22:31AM +0200, Massimiliano Cannata wrote:
> That's what I've done,
> I have develoop some new command, and now I have a shell script that 
> call in the rigth order a numbers of function and generates maps....
> I have some input needed and of course can be simply asked to the user 
> by using g.parser....
> But what I'd like to do is an hydrologic window menu....
> I try to better explain me:
> 
> 1) a windows with 3 options (button) for preprocessing, calibration, 
> simulation. Each one opens a new window.
> 2) in each windows input box and associated button....
> for instance I will have a preprocessing window:
> 
> input elevation map: (text box)  - select (button)
> input river map name : (text box)  - select (button) - extract (button)
> 
> if I press the extract button a new windows for river extraction will be 
> opened.
> It will get the already entered elevation maps and a new user entered 
> treshold value.
> With a run button calculate and display the map.
> With a save button return to the preprocessing window with the input 
> river map text box filled with the calculated map.
> 
> As I'm new to GUI programming, how to get somethink like this (obviously 
> integrated in GRASS )?
> tcltkgrass?
> qgis?
> other?
> Thanks,
> Maxi
> 
example of the C code for GRASS (see r.example):

	/* Define the different options */
	input = G_define_option() ;
	input->key        = "input";
	input->type       = TYPE_STRING;
	input->required   = YES;
	input->description= ("Name of an input layer" );

	output = G_define_option() ;
	output->key        = "output";
	output->type       = TYPE_STRING;
	output->required   = YES;
	output->description= ("Name of an output layer");

	/* Define the different flags */
	flag1 = G_define_flag() ;
	flag1->key         = 'q' ;
	flag1->description = "Quiet" ;
        

example of the shell-code (see manual to g.parser):

#%flag
#%  key: f
#%  description: a flag
#%END
#%option
#% key: raster
#% type: string
#% gisprompt: old,cell,raster
#% description: raster input map
#% required : yes
#%end
#%option
#% key: vector
#% type: string
#% gisprompt: old,vector,vector
#% description: vector input map
#% required : yes
#%end
if [ "$1" != "@ARGS_PARSED@" ] ; then
  exec $GISBASE/etc/bin/cmd/g.parser "$0" "$@"
fi

that's all folks!

Jáchym

> 
> Hamish wrote:
> 
> >>I'd like to program an interface to handle preprocessing, calibration 
> >>and simulation of a GRASS based hydrological model.
> >>I have seen that the new interface could be a qgis interface, so my 
> >>question is where I have to focus on? "Tcltkgrass" or "qgis grass
> >>toolbox"?
> >>   
> >>
> >
> >I would write a shell script using the GRASS's g.parser[*]. Adding that
> >to the GUI in GRASS or in QGIS would be easy to do - just keep the logic
> >out of the GUI, use it as a front-end.
> >
> >[*] see the included GRASS 6 scripts/ in the source distribution and
> > http://grass.ibiblio.org/grass60/manuals/html60_user/g.parser.html
> >for ideas.
> >
> >
> >
> >Hamish
> >
> > 
> >
> 
> -- 
> 
> Eng. Massimiliano Cannata
> Scuola Universitaria Professionale della Svizzera Italiana
> Istituto Scienze della Terra
> Via Trevano, c.p. 72
> CH-6952 Canobbio-Lugano
> Tel: +41 (0)58 666 62 18
> Fax +41 (0)58 666 62 09
> 

-- 
Jachym Cepicky
e-mail: jachym.cepicky at centrum.cz
URL: http://les-ejk.cz
GPG: http://www.fle.czu.cz/~jachym/gnupg_public_key/