Chris,
Giving an example that works (or does not work, actually) straight out
of a copy/paste
is making it easier for anyone willing to help.
I had a quick try at getting one, but cannot run the example in the
documentation
for the function 'plsr'.
import rpy
rpy.r.library('pls')
rpy.r.data('yar
My message seemed to get a bit lost in that discussion so just to bring
it back ...
Changing that to mod instead of r(mod) results in
predicted=r.predict(*r(mod)*, type='response', ncomp = 10, newdata = accFAS )
gives the following error
Traceback (most recent call last):
File "C:\Documents
Thanks to all.
The previous examples included a couple of extra "" causing the str error.
This works fine now.
Would you consider adding this to the documentation?
I find the documentation/wiki coverage a bit short. These examples help
a lot.
Quoting Laurent Gautier on 06/11/2008 05:57 PM:
> i
import rpy
foo = rpy.r.list(a=1, b=2, c=3)
rpy.r["names"](foo)
tmp = rpy.r["names<-"](foo, ['d', 'e', 'f'])
rpy.r.str(tmp)
List of 3
$ d: int 1
$ e: int 3
$ f: int 2
2008/6/11 Renato Alves <[EMAIL PROTECTED]>:
> Still can't get it to work... Am I missing something?
>
> b <- r("'rownames<-'"
Grr. I need to slow down a bit. Lets see... I just tried this and it works
properly:
from rpy import *
set_default_mode(NO_CONVERSION)
x = r.matrix( r.rnorm(100), nrow=5 )
x = r.get("rownames<-")(x, ['a','b','c','d','e'] )
r.print_(x)
A similar trick can be used for column
On Jun 11, 2008, at 10:45 AM, Renato Alves wrote:
> Still can't get it to work... Am I missing something?
>
> b <- r("'rownames<-'")(b, a)
> TypeError: 'str' object is not callable
I think you were right before -- in Python, that should be:
b = r("'rownames<-'")(b, a)
etc. The "<-" syn
Still can't get it to work... Am I missing something?
b <- r("'rownames<-'")(b, a)
TypeError: 'str' object is not callable
I'm with RPy version 1.0.3 [R version 2.7.0 (2008-04-22)]
Quoting Warnes, Gregory on 06/11/2008 05:34 PM:
> Sorry, I gave you the wrong magic
>
> x <- r("'rownames<-'")(x, f
Sorry, I gave you the wrong magic
x <- r("'rownames<-'")(x, foo)
-G
On 6/11/08 12:01PM , "Renato Alves" <[EMAIL PROTECTED]> wrote:
> Hi Gregory,
>
> I've been trying to understand how to do the equivalent with the
> colnames function... without much success.
>
> I haven't been able to use yo
Hi Gregory,
I've been trying to understand how to do the equivalent with the
colnames function... without much success.
I haven't been able to use your suggestion. I always get the error:
unexpected '[' in "["
Apart from this, is <- valid python syntax? Or did you meant to say = ?
An example
Hi Gregory,
Changing that to mod instead of r(mod) results in the following error
Traceback (most recent call last):
File "C:\Documents and Settings\Administrator\Desktop\pls\pls.py",
line 40, in
predicted=r.predict(mod, type='response', ncomp = 10, newdata = accFAS )
RPy_RException: Erro
On Jun 10, 2008, at 9:20AM , Chris Arthur wrote:
Thanks Gregory, that "y ~ ." syntax solves my problems. and allows
my to
pull out the PLSR data I wanted, but leads me to my next problem.
Glad to help.
I then try to use my model to predict the value of the matrix accFAS
predicted=r.pr
Thanks Gregory, that "y ~ ." syntax solves my problems. and allows my to
pull out the PLSR data I wanted, but leads me to my next problem.
I generate PLSR model as follows
mod=r.plsr(r("V83 ~ ."),ncomp=10,data=dataPLS,validation="CV")
and test it by ploting ...
r.plot(mod,ncomp=10 )
This works.
You may find the forumula syntax
y ~ .
helpful. If data= is supplied to the modeling command, the single
period means 'all variables in the data frame that are not
otherwised mentioned.
As for changing he names on an existing object, you can't use the
rownames(x) <- foo syntax
2008/6/7 <[EMAIL PROTECTED]>:
> Hi Guys, sorry for the uninformative title.
>
> Basically If folk remember I am wanting to do some PLS regression on some
> data. Folk on this list were kind enough to point me in the direction of
> how to do this and I seem to have hit a really simple error which h
Hi Guys, sorry for the uninformative title.
Basically If folk remember I am wanting to do some PLS regression on some
data. Folk on this list were kind enough to point me in the direction of
how to do this and I seem to have hit a really simple error which has
gorund me to a halt. So any chance of
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