getting Arrays and variables from R [fixed]
Nicolas Lebas
nlebas at grignon.inra.fr
Wed Jul 27 06:08:09 EDT 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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