[GRASS-dev] python script problem...

[Massimiliano Cannata]

Thanks for the help.
The problem was the correct indentation into the main()....
Now it works perfectly.

Maxi

Massimiliano Cannata wrote:
> Hi all,
> I'm new to python and I'm trying to build up a script...
> My question is:
> After I setted up an option of type double, How can I get it in a python
> variable?
>
> h = float(os.getenv('GIS_OPT_h')) it doesn't work, it require a string
> or numeric attribute !?!?
>
> how to do?
>
> thanks,
> Maxi
> ------------------------
> Here is my script:
> -----------------------
> #!/usr/bin/python
> # -*- coding:utf-8 -*-
> import math
>
> #%Module
> #%  description: g.parser test script
> #%  keywords: keyword1, keyword2
> #%End
> #%option
> #%  key: h
> #%  type: double
> #%  description: Profondità del mare in prossimità della costa h
> #%  required : yes
> #%end
> #%option
> #%  key: ho
> #%  type: double
> #%  description: Profondità del mare in corrispondenza dell'epicentro
> #%  required : yes
> #%end
> #%option
> #%  key: Ho
> #%  type: double
> #%  description: Altezza d'onda nel punto di generazione dello tsunami
> #%  required : yes
> #%end
>
> import sys
> import os
>
> def main():
>
> #### add your code here ####
>    print ""
>    print "Value of GIS_OPT_h: %s" % os.getenv("GIS_OPT_h")
>    print "Value of GIS_OPT_ho:  %s" % os.getenv("GIS_OPT_ho")
>    print "Value of GIS_OPT_Ho:  %s" % os.getenv("GIS_OPT_Ho")
>
> #### it works and print the user input ####
>
> h = float(os.getenv('GIS_OPT_h'))
> ho = os.getenv('GIS_OPT_ho')
> Ho = os.getenv('GIS_OPT_Ho')
>
> #### NOT WORKING ! i guess i need something similar to atof in C ANSI 
> ####
>
> Co=math.sqrt(9.8 * h)
> print "celerità dell'onda=",Co
>
> H= Ho * ((ho/h)**(0.25))
> print "Altezza d'onda a riva=",H
>
> U=Co * math.sqrt((1+H/h))
> print "Velocità d'onda a riva=",U
>
> L= 4 * 2.415 *h /(math.sqrt(3*H/h))
> print "Lunghezza di un'onda solitaria=",L
>
> k1=U**2 * L/(19.6)
> print "k1=",k1
>
> k2= U**2 * H/(39.2)
> print "k2=",k2
>
> #### end of your code ####
> if __name__ == "__main__":
>    if ( len(sys.argv) <= 1 or sys.argv[1] != "@ARGS_PARSED@" ):
>        os.execvp("g.parser", [sys.argv[0]] + sys.argv)
>    else:
>    main();
>
>
>
>
>

-- 
-----------------------------------------------------
Dr. Massimiliano Cannata
Environmental & Geomatic Engineer

Institute of Earth Scences - SUPSI
Trevano, C.P. 72, CH-6952 Canobbio, SWITZERLAND

Tel:    +41 (0)58 / 666 62 14  
Fax:    +41 (0)58 / 666 62 09
E-mail: massimiliano.cannata at supsi.ch

Web: 
http://www.ist.supsi.ch
http://istgis.ist.supsi.ch:8001/geomatica/
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