[GRASSLIST:444] Re: Re: grass programming
Markus Neteler
neteler at itc.it
Tue Mar 28 08:42:25 EST 2006
To run GRASS *commands* from outside, take a look at the SWIG interface.
It is only prototype, but looks promising:
http://grass.itc.it/devel/index.php#prog
-> GRASS SWIG interface <http://mpa.itc.it/markus/grass61progman/swig/>
Markus
Ana Soares wrote:
> Hi :-)
>
>
> It compiles. But this I don't understand : it runs in grass but not in
> standard shell session
>
> GRASS 6.0.1 (spearfish60):~/Estagio/GRASS_Prototipo1 > ./prot1
> Argv[0] = ./prot1
> G_program_name => prot1
> GRASS 6.0.1 (spearfish60):~/Estagio/GRASS_Prototipo1 >
>
>
> this I don't uderstand
> So I can't use its GIS library and so on without entering grass ?
>
>
>
>
>
>
>
> 2006/3/28, marcos boullón magán <marcosboullon at gmail.com
> <mailto:marcosboullon at gmail.com>>:
>
> But your code DOES compile (pointing to the gis.h file)...
>
> marcos at venux:~/cvsgrass/devel/tmp$ cat prot1.c
> #include <stdio.h>
> #include <unistd.h>
> #include <stdlib.h>
> #include "../../grass6/include/gis.h"
> int main(int argc, char **argv) {
> printf("Argv[0] = %s\n", argv[0]) ;
> G_gisinit("prot1") ;
> printf("G_program_name => %s\n", G_program_name()) ;
> }
>
> marcos at venux:~/cvsgrass/devel/tmp$ mkdir OBJ.i686-pc-linux-gnu
>
> marcos at venux:~/cvsgrass/devel/tmp$ gcc
> -I/home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/include -g -O2
> -Wall -Wconversion -Wno-implicit-int -DPACKAGE=\""grassmods"\"
> -I/home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/include -o
> OBJ.i686-pc-linux-gnu/prot1.o -c prot1.c
> prot1.c: En la función `main':
> prot1.c:23: aviso: control reaches end of non-void function
>
> marcos at venux :~/cvsgrass/devel/tmp$ gcc
> -L/home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/lib
> -Wl,--export-dynamic
> -Wl,-rpath-link,/home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/lib
> -DPACKAGE=\""grassmods"\" -o
> /home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/bin/prot1
> OBJ.i686-pc-linux-gnu/prot1.o -lgrass_gis -lgrass_datetime -lz
> -lgrass_segment -lm -lz
>
> marcos at venux:~/cvsgrass/devel/tmp$ dir
> /home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/bin/prot1
> -rwxr-xr-x 1 marcos marcos 32173 2006-03-28 13:26
> /home/marcos/cvsgrass/grass6/dist.i686-pc-linux-gnu/bin/prot1
>
>
> ... and also DOES work under GRASS...
>
> marcos at venux:~/cvsgrass/devel/tmp$ grass61
> [...]
>
> GRASS 6.1.cvs (spearfish60):~/cvsgrass/devel/tmp >
> ../../grass6/dist.i686-pc-linux-gnu/bin/prot1
> Argv[0] = ../../grass6/dist.i686-pc-linux-gnu/bin/prot1
> G_program_name => prot1
>
>
> Just remember, you need a succesfully GRASS install to be able to
> compile your own code.
>
> M.
>
> 2006/3/28, Ana Soares <tiobrothercamarada at gmail.com
> <mailto:tiobrothercamarada at gmail.com>>:
> >
> > Noooo! :-S
> >
> > As I've show in the output....
> >
> >
> > 28 Mar 2006 10:47:19 -0000, Nitin <grasschoper at rediffmail.com
> <mailto:grasschoper at rediffmail.com>>:
> > >
> > >
> > >
> > >
> > > problem solved?
> > >
> > >
> > > On Tue, 28 Mar 2006 Ana Soares wrote :
> > >
> > > >28 Mar 2006 10:29:53 -0000, No Name
> <grasschoper at rediffmail.com <mailto:grasschoper at rediffmail.com>>:
> > > > >
> > > > >
> > > > > check path of "gis.h " in ur makefile and don't forget to
> link gis
> > > > > library.
> > >
> > > > >
> > > > >
> > > > >
> > > > > On Tue, 28 Mar 2006 Ana Soares wrote :
> > > > > >Hei :-)
> > > > > >
> > > > > >I already did that.
> > > > > >
> > > > > >My problem is how to integrate that in a program of my own.
> > > > > >For example,
> > > > > >
> > > > > >#include < stdio.h>
> > > > > >
> > > > > >#include "interface.h"
> > > > > >#include <unistd.h>
> > > > > >#include <stdlib.h>
> > > > > >
> > > > > >#include "gis.h"
> > > > > >
> > > > > >
> > > > > >int main(int argc, char **argv) {
> > > > > >
> > > > > > printf("Argv[0] = %s\n", argv[0]) ;
> > > > > >
> > > > > > G_gisinit("prot1") ;
> > > > > >
> > > > > > printf("G_program_name => %s\n", G_program_name()) ;
> > > > > >
> > > > > > // if (G_parser(argc, argv))
> > > > > > //exit (-1);
> > > > > >
> > > > > > // ask_interface() ;
> > > > > >
> > > > > >}
> > > > > >
> > > > > >I don 't understant why this doesn't work :-(
> > > > > >
> > > > > >Output :
> > > > > >seabiscuit at ubuntu:~/Estagio/GRASS_Prototipo1$ ./prot1
> > > > > >Argv[0] = ./prot1
> > > > > >
> > > > > >bla
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >seabiscuit at ubuntu:~/Estagio/GRASS_Prototipo1$
> > > > > >
> > > > > >(this stopped because I did Ctr C)
> > > > > >
> > > > > >This is what I'm having trouble understanding ....
> > > > > >Help please :-)
> > > > > >
> > > > > >
> > > > > >
> > > > > >28 Mar 2006 10:08:10 -0000, No Name <
> grasschoper at rediffmail.com <mailto:grasschoper at rediffmail.com>>:
> > > > > > >
> > > > > > >
> > > > > > > there a programmers manual available in download
> section on official
> > > > > sitye
> > > > > > > of GRASS. Give some time on reading it.
> > > > > > >
> > > > > > > enjoy grass
> > > > > > > nitin
> > > > > > >
> > > > > > > On Tue, 28 Mar 2006 Ana Soares wrote :
> > > > > > >
> > > > > > > >Thanks!
> > > > > > > >
> > > > > > > >That really helped :) But I have a lttle problem : I
> can't compile
> > > > > it!
> > > > > > > >Any hints ?
> > > > > > > >
> > > > > > > >Thanks :-)
> > > > > > > >
> > > > > > > >2006/3/27, Massimiliano Cannata
> <massimiliano.cannata at supsi.ch
> <mailto:massimiliano.cannata at supsi.ch>>:
> > > > > > > > >
> > > > > > > > > Ana Soares wrote:
> > > > > > > > >
> > > > > > > > > > Hello :-)
> > > > > > > > > >
> > > > > > > > > > I'm getting really desperate with grass ...
> > > > > > > > > > I want to use its libraries in my C program,
> but I can't seem to
> > > > > > > even
> > > > > > > > > > understand how to use G_gisinit :(
> > > > > > > > > >
> > > > > > > > > > Is there any manual that you recommend to helo
> me out?
> > > > > > > > > >
> > > > > > > > > > Help / Rescue would be very much appreciated!!
> > > > > > > > > >
> > > > > > > > > > Thanks :-)
> > > > > > > > >
> > > > > > > > > give a look to r.example and v.exaple files
> > > > > > > > > ( http://grass.itc.it/devel/index.php)
> > > > > > > > > hope it helps...
> > > > > > > > > Max
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > >
> > > > > > > > > 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
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > <
> > >
> > > > >
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>
> --
> -- marcos boullón magán
>
>
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