Using if qualifier with egen in Stata - Stack Overflow
Mar 6, 2012 · The total() function of egen ignores missing values in its argument. If there are missing values, we don't want to include them in the count, but we can use !missing() which yields 1 if not missing and 0 if missing. egen's count() is another way to do this.
What's the difference between gen and egen in Stata 12?
Oct 20, 2012 · StasK is correct. Techincally, egen is an "extension" to the egen command because it reaches beyond simple computations (var1 + var2, log(var1), etc.) to add descriptive stats, standardizations and more. Some of the stuff that can be done with plyr and apply in R is therefore done with statsby and egen in Stata. I use it to gently hack ...
stata - Using egen functions with replace - Stack Overflow
Mar 26, 2020 · 1. I created a new variable from the mean of another variable using egen: egen afd_lr2 = mean(afd_lire2w) if ost == 0. Now I would like to replace the values with the mean of another variable if ost == 1: replace afd_lr2 = mean(afd_lireo) if ost ==1. This is not possible, as the mean function cannot be used with the replace command.
Stata egen combined with if - Stack Overflow
I have two formulas for year before and after 2002. If I use egen with if, if year > 2002 {. bysort year month :egen Z= total( x*weight) } else {. bysort year month : egen Z= total(y*weight*0.5) } this code is not going to work, because if year <2002 , Stata …
Stata: using egen group () to create unique identifiers
I have a dataset where each row is a firm, year pair with a firmid that is a string. If I do duplicates drop firmid year, force it doesn't delete anything since there are no duplicates (I origi...
How can I rank observations within groups in Stata?
May 18, 2011 · I'd say this question is posed the wrong way round for best understanding. The aim is to group observations, those with the lowest value all being assigned a grade 1, the next lowest being all assigned 2 and so forth. This isn't ranking in most senses that I have seen discussed, but Stata's egen, rank() does get you part of the way.
How to correctly use egen mean function for computing average ...
Nov 20, 2013 · The help for egen is quite explicit: "Explicit subscripting (using _N and _n), which is commonly used with generate, should not be used with egen" The reason is that egen often changes the sort order temporarily to do what it does, …
Stata: Using egen, anycount() when values vary for each observation
Aug 31, 2013 · In addition, egen is only to be used for convenience, never speed. replace _count = _count + (move`j' == playerlist) or. replace _count = _count + (move`j' == playerlist) Even if you had been determined to use egen, the loop need only be over the distinct values of playerlist, not all the observations.
Standardize a variable by group in Stata - Stack Overflow
Jan 15, 2015 · egen has the following updates: c. egen function std() now allows by varlist:. When used with by varlist:, values are standardized within each group defined by varlist. The option specifying a value for the standard deviation has been renamed sd() (the old option name std() continues to work as well).
Equivalent for Stata's egen group () function - Stack Overflow
Equivalent for Stata's egen group() function. Ask Question Asked 5 years, 4 months ago.