Scott Merryman replied:
> Kit Baum answered this question last week:
>
> "As your 7th grade algebra teacher probably told you,
>
> 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
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Newcastle University |http://www.ncl.ac.uk/geps
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