getting Arrays and variables from R [fixed]

Nicolas Lebas nlebas at grignon.inra.fr
Wed Jul 27 12:08:09 CEST 2005


Nicolas Lebas a écrit :

>hello,
>
>i don't know if this is the best list to send this question, but i'm 
>already trying to ask.
>
>I need to import variables from .RData files (arrays or variables).
>I'm trying to use the rpy module, but without success beccause when i 
>try to access to a variable loaded from the .RData file i have a 
>segmentation fault !
>
>This is what i'm doing :
>- in R-projet, i create a .RData file with some variables :
> > tab<-c(2,5,8,6)
> > v<-0.5
> > save.image("file.RData")
>
>- in Python :
> > from rpy import *
> > r.load("file.RData")
>['tab', '.Traceback', 'v']
> > r.tab
>segmentation fault !
>
>I don't understand very well what does python crash.
>
>If someone has an idea to solve my problem or to give me a method which 
>permit to import arrays and variables from .RData files with another module.
>
>Thanks
>
>                     Nicolas
>  
>
Finally, i found the solution with rpy.
There is a bug in the python2.4-rpy_0.4.1 release, so you have to use
instead of 'r.tab' command :

r.get('tab')



-- 
Nicolas Lebas
INRA Unité Mixte de Recherche INRA / INAPG "Environnement et Grandes 
Cultures"
78850 Thiverval - Grignon
France
Tél.  +33 (0)1 30 81 55 55   (standard)
Fax   +33 (0)1 30 81 55 63
Site Web : www-egc.grignon.inra.fr



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