Message-ID: <CANz9Z_LFK5KwO3QY5KsxD+ONu-AeQSvD61b6CXX2A2t8Y4jHqA@mail.gmail.com>
Date: 2011-07-20T15:40:49Z
From: Joshua Wiley
Subject: transforming a matrix of logical to 0 and 1 while keeping the dim of matrix
In-Reply-To: <CAPb11mQEgyq_h6mHBsFM_6w7PW_YJwGYk3sW0YHPuiFOEDQRvQ@mail.gmail.com>
Hi,
I am not sure about "correct", but R stores logical values TRUE/FALSE
as 1/0 already so simply changing the mode would suffice:
mode(x) <- "numeric"
alternately
x + 0
HTH,
Josh
On Wed, Jul 20, 2011 at 8:16 AM, Julian TszKin Chan <cjulian at 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
>
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>
--
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
https://joshuawiley.com/