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Re: st: A query about min in stata
Combining fun/elegance and speed, perhaps:
forval i=1/9 {
local list `list',L`i'.r
}
gen min=min(r,`list')
--Nick Winter
Nick Cox wrote:
As a curiosity note this alternative:
gen min = r
qui forval i = 1/9 {
replace min = min(min, L`i'.r)
}
I'll guess that it will be slower, but it looks more fun.
The tedious solution of just writing out all the terms is probably
fastest.
Nick
[email protected]
Eva Poen
if you can -tsset- your data, you could do
gen min = min(r, L1.r, L2.r, L3.r)
etc. up to L9.r. If your data are not a time series or a panel, you
can still generate a row identifier and -tsset- on that:
gen id = _n
tsset id
2008/8/22 Ashim Kapoor <[email protected]>:
I am trying to do the following : -
I have a variable r. I want to create a variable m=min( r, r[_n-1],
... ,r[_n-9])
I guess I can use a while loop to do this but that is quite slow. An
alternative would be to define r0=r,r1=r[_n-1],..,r9=r[_n-9]
and then say m=rmin ( r0 r1 ... r9).
My question is that is there a built in way in stata to do this ? like
say by using egen ?
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--------------------------------------------------------------
Nicholas Winter 434.924.6994 t
Assistant Professor 434.924.3359 f
Department of Politics [email protected] e
University of Virginia faculty.virginia.edu/nwinter w
PO Box 400787, 100 Cabell Hall
Charlottesville, VA 22904
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