Two further methods:
> x+0
[,1] [,2] [,3]
[1,] 1 0 1
[2,] 0 1 0
[3,] 1 0 1
> mode(x)<- "numeric"; x
[,1] [,2] [,3]
[1,] 1 0 1
[2,] 0 1 0
[3,] 1 0 1
On Jul 20, 2011, at 11:27 AM, Sarah Goslee wrote:
How about this:
x<-matrix(c(TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE),nrow=3)
x
[,1] [,2] [,3]
[1,] TRUE FALSE TRUE
[2,] FALSE TRUE FALSE
[3,] TRUE FALSE TRUE
ifelse(x, 1, 0)
[,1] [,2] [,3]
[1,] 1 0 1
[2,] 0 1 0
[3,] 1 0 1
Sarah
On Wed, Jul 20, 2011 at 11:16 AM, Julian TszKin Chan
<cjul...@bu.edu> wrote:
Hi all,
Suppose I have a matrix of logical value:
x<-matrix(c(TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE,FALSE,TRUE),nrow=3)
I would like to change the value of FALSE to 0 and TRUE to 1. An
obvious way to do it is :
y<-as.numeric(x)
However this method doesn't keep the dim of x. I also need to copy
the
dim information to y too.
attributes(y)<-attributes(x)
Is this a correct way to do it in R? Is there any single step
function
which can do the something? Thanks
Regards,
TszKin Julian
--
Sarah Goslee
http://www.functionaldiversity.org
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