[R] coerce mode list?

[Mehdi Ghafariyan]

Hi all;
Thanks to those R users ,who kindly helped me with the
problem; W1 should have been defined as a matrix which
some people mentioned and as.matrix(W1) would do the
job. 

cheers 

Mehdi


> > ----------
> > From: 	Mehdi
> Ghafariyan[SMTP:mehdi_ghafariyan at yahoo.com]
> > Sent: 	Tuesday, September 19, 2000 6:10 AM
> > To: 	r-help at stat.math.ethz.ch
> > Subject: 	[R] coerce mode list?
> > 
> > Dear R/S users;
> > I'm using S+ version 4 Release 3.
> > and I am trying to do a simple calculation like
> the
> > following :
> > 
> > > X1<-X[1:5]
> > > W1<-W[1:5,1:5]
> > > X1
> > [1] 1.250000 1.292308 1.176471 0.937500 1.538462
> > > W1
> >   VAR00003 VAR00004 VAR00005 VAR00006 VAR00007 
> > 1        0        1        0        1        0
> > 2        1        0        0        0        1
> > 3        0        0        0        0        1
> > 4        1        0        0        0        0
> > 5        0        1        1        0        0
> > > Xbar1 <- mean(X1)
> > > S1 <- (t(X1 - Xbar1)) %*% W1 %*% (X1 - Xbar1)
> > Error in as.double: Cannot coerce mode list to
> double:
> > .Data = list(..
> > Dumped
> > > S1 <- (t(as.double(X1 - Xbar1))) %*% W1 %*%
> > (as.double(X1 - Xbar1))
> > Error in as.double: Cannot coerce mode list to
> double:
> > .Data = list(..
> > Dumped
> > 
> > 
> > I don't understand the error message. Can anyone
> help?
> > 
> > Many thanks in advance.
> >                                 Mehdi
> > 
> > 
> > 
> > 
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> > _._._
> > 


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