Wonderful economy. Thanks.
gh
> From: Nick Cox <[email protected]>
> Reply-To: <[email protected]>
> Date: Wed, 26 Nov 2008 20:58:49 +0000
> To: <[email protected]>
> Subject: RE: st: RE: Create categorical variable based on 'z-score'
>
> You want to round up when positive, down when negative.
>
> egen z = std(foo)
> replace z = cond(z == 0, 0, cond(z > 0, ceil(z), floor(z)))
>
> Nick
> [email protected]
>
> George Hoffman
>
> Thanks, nick. Egen std works. Can I nest floor(ceil(x)) to get the
> desired
> ...?
>
> Nick Cox <[email protected]>
>
>> Despite various answers, no one mention -egen, std()- followed by
>> -floor()- and -ceil(). All existing official Stata.
>
> George Hoffman
>
>> Generic problem: I'd like to create categorical variables for a list
> of
>> continuous variables. The categorical variables would be based upon
> the
>> z-score of each variable, such as:
>> Z-score of X catX
>> <-2 -3
>> -2 ..-1 -2
>> -1 .. 0 -1
>> 0 0
>> 0.. +1 +1
>> 1 ..2 +2
>>> +2 +3
>>
>> If there were a way to z-transform variables, I could do an easy
>> recode(catX)
>
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*
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