I believe it is possible, but R is not really a full-fledged symbolic algebra
system so it wouldn't be an intuitive tool to use and what would you do with it
once you had it? It is much more useful in R to do something like
f1 <- function( M, A, B, C ) {
M %*% c( A, B, C )
}
m <- matrix( c( 1,0,-1,0,1,2,0,0,1 ), ncol=3 )
f1( m, 3, 4, 5 )
# [,1]
# [1,] 3
# [2,] 4
# [3,] 10
which manipulates numeric values according to your definition.
For future reference... Please post on this list using plain text format...
your email was a pain to decipher.
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Sent from my phone. Please excuse my brevity.
On October 31, 2015 8:52:51 AM PDT, Judson <judsonbl...@msn.com> wrote:
>
>
>Is
>there a way to multiply a matrix
>
>times
>a vector of symbols?
>
>For
>instance, could I do this:
>
>1
>0 0 a
>
>0 1
>0 times b
>
>-1 2
>1 c
>
>
>
>which
>should result in :
>
> a
>
> b
>
> c �a
>-2*b
>where a, b, and c
>
>are
>as yet not assigned numeric values?
>
>........................... judson blake
>
>
>
> [[alternative HTML version deleted]]
>
>
>
>------------------------------------------------------------------------
>
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>and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
