Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: modifications to egen to handle multiple variables

From   Nick Cox <[email protected]>
To   "[email protected]" <[email protected]>
Subject   Re: st: modifications to egen to handle multiple variables
Date   Wed, 25 Jul 2012 17:38:26 +0100

My suggestion (again) is that you would gain essentially nothing over using loops to call -egen- multiple times, something that can be done without pain.


On 25 Jul 2012, at 16:58, Pradipto Banerjee <[email protected] > wrote:

I'm interested to define a new "generic" version of egen, called egenmult that can, if used as, for instance:

. bysort var1 var2: egenmult {varx1 varx2 varx3} = myfunc(vara {varb1 varb2 varb3}), myoptions({vary1 vary2 vary3} varz)

then Stata can interpret/replace the items within the "{" and "}" above as:

. bysort var1 var2: egen varx1 = myfunc(vara varb1), myoptions(vary1 varz)

. bysort var1 var2: egen varx2 = myfunc(vara varb2), myoptions(vary2 varz)

. bysort var1 var2: egen varx3 = myfunc(vara varb3), myoptions(vary3 varz)

This question is related to my earlier post: . I had checked the source code for -rowsort-, -rowranks-, as was suggested in the response, but to my understanding, I would need to write a new program for every function where I want a multiple variable return feature.

On the other hand, there is an extensive list of functions already available for -egen- / -egenmore-, and it might be just nice to have an -egenmult- program described above that can handle any "generic" functions already available for -egen-.

Would it be possible to offer suggestions on how to achieve the above, i.e. how can one program the above
*   For searches and help try:

© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index