# Re: st: RE: Can I convert (-1-+1) variables into (0-1) variables?

 From "Clive Nicholas" <[email protected]> To [email protected] Subject Re: st: RE: Can I convert (-1-+1) variables into (0-1) variables? Date Fri, 15 Jul 2005 11:49:37 +0100 (BST)

```Scott Merryman replied:

> Kit Baum answered this question last week:
>
>
> z = x/2 + 5  will take x {-10,10} into the range {0, 10}.
>
> set obs 21
> g x = -11 + _n
> g z = x/2 + 5
> list"
>
> In this case the transformation is z = (x + 1)/2.
>
> clear
> set obs 41
> g x = (-21 + _n)/20
> g z = (x + 1)/2
> list

Thanks Scott - I must have missed that!

CLIVE NICHOLAS        |t: 0(044)7903 397793
Politics              |e: [email protected]
Newcastle University  |http://www.ncl.ac.uk/geps

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