[R] convert characters into integers in a matrix
Erik Iverson
iverson at biostat.wisc.edu
Tue Jun 10 22:19:22 CEST 2008
Manisha -
Will this work instead?
if 'a' is your matrix, try
ifelse(a == "A", 0, 1)
Best,
Erik Iverson
Manisha Brahmachary wrote:
> Hello,
>
>
>
> I will appreciate any suggestion for this simple problem. I have a matrix of
> characters "A", "P", "M".
>
>
>
> I want to convert those characters to integers 0,1, 1 respectively. I am
> using the following R statements:
>
>
>
> exprs.new<-gsub("P",1,exprs)
>
> exprs.new1 <- gsub("A",0,exprs.new)
>
> exprs.new2 <- gsub("M",1,exprs.new1)
>
>
>
> The replaced integers are stored as characters and I cannot find a way to
> convert the matrix to an integer matrix.
>
>
>
> Thanks
>
> manisha
>
>
>
>
> [[alternative HTML version deleted]]
>
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