R help - Nov 2007 - Binary data sets

Hi,

I would like to know if there is any algorithm in R for transforming Binary data
sets. I want something like taking all the zeros and giving them some negative
value, for example -5, and taking all ones and giving them some positive value,
if it had been given -5 for zeros it would be 5 for all ones.

Thank you for your time,

Pedro Marques

On 09-Nov-07 23:11:02, pedrosmarques at portugalmail.pt
wrote:
> Hi,
> 
> I would like to know if there is any algorithm in R for transforming
> Binary data sets. I want something like taking all the zeros and giving
> them some negative value, for example -5, and taking all ones and
> giving them some positive value, if it had been given -5 for zeros it
> would be 5 for all ones.
This could be done in various extremely simple ways.

In the case of your example, suppose that X is a vector containing
only the values 0 and 1. Then

  -5 + 10*X

will give a result which has -5 where X has 0, and +5 where X has 1.

Another approach would be on the lines of

  -5*(X==0) + 5*(X==1)

Hoping this helps,
Ted.

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Date: 10-Nov-07                                       Time: 09:32:41
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