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Re: st: Re: saving memory local vs usual variable
Somewhere along the way there was a question about how to retrieve the
mode, "second mode," "third mode" and so on. (I, too, am not sure if
that is standard usage...)
The easiest way I see to get there is:
. sysuse auto
. tab rep78, matcell(cell) matrow(row) sort
The -sort- option tells Stata to sort the tabulation by frequency
(highest to lowest). The -matrow(row)- option puts the values of rep78
in a matrix called 'row', and the -matcell(cell)- puts the actual
frequencies in a matrix called 'cell.'
So the modal value is
. di row[1,1]
The "second modal" value is
. di row[2,1]
and so on.
-Nick Winter
Ashim Kapoor wrote:
Yes I see that. Quite clever. BUT what if it is something which is NOT
generated by a summary statistic . Like say the 2nd mode ( assuming a
variable has 2 modes). Can I directly store it into a local variable ?
Thank you,
Ashim.
On Fri, Oct 3, 2008 at 9:29 PM, Martin Weiss <[email protected]> wrote:
As we said this morning:
su age,mean
loc lj=r(max)
HTH
Martin _______________________
----- Original Message ----- From: "Ashim Kapoor" <[email protected]>
To: <[email protected]>
Sent: Friday, October 03, 2008 5:54 PM
Subject: st: saving memory local vs usual variable
Hello everyone,
I have a question. Suppose I have a variable say - > age. Now I can do
egen j=max(age). Then I will have the max value of age in ONE
VARIABLE! Horrible waste of memory. I try to do local lj=max(age) and
that does not work. How can I conserve memory ? Is there something
basic which I have missed ?
Thank you,
Ashim.
PS : I do understand that I can do egen j = max (age ) and then say
local lj=j[1] and then -do drop j - but is there a better way ?
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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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