= Stata Egen =

The '''`egen`''' command is an extended [[Stata/Generate|generate]] command.

<<TableOfContents>>

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== Usage ==

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== Egen Functions ==



=== AnyCount ===

`anycount(varlist), values(numlist)` returns the number of variables in `varlist` equal to any integer value in `numlist`.



=== AnyMatch ===

`anymatch(varlist), values(integer numlist)` returns 1 if any variable in `varlist` is equal to any integer value in `numlist`, and 0 otherwise



=== AnyValue ===

`anyvalue(varname), values(integer numlist)` returns the name of `varname` if `varname` is equal to any integer value in `numlist` 



=== Concat ===

`concat(varlist)` returns the end-to-end concatenation of each variable in `varlist`. Numeric variables in `varlist` are implicitly converted to string values.

To insert a string between each variable in `varlist`, try `concat(varlist), punct(string)`.



=== Count ===

`count(expression)` returns the number of non-missing observations in `expression`.



=== Cut ===

`cut(varname), at(numlist)`

`cut(varname), group(number)`



=== Diff ===

`diff(varlist)`



=== Ends ===

`ends(varname)`



=== Fill ===

`fill(numlist)`



=== Group ===

`group(varlist)` returns a sequential identifier for each unqiue combination of the values in `varlist`.

To generate an identifier for groups of duplicates, try:

{{{
sort keyvarlist
by keyvarlist: gen dup = cond(_N==1,0,_n)
egen grp = group(keyvarlist)
}}}



=== Iqr ===

`iqr(expression)`



=== Kurt ===

`kurt(expression)`



=== Mad ===

`mad(expression)`



=== Max ===

`max(expression)`



=== MDev ===

`mdev(expression)`



=== Mean ===

`mean(expression)`


=== Median ===

`median(expression)`



=== Min ===

`min(expression)`



=== Mode ===

`mode(varname)`



=== Pc ===

`pc(expression)`



=== Pctile ===

`pctile(expression)`



=== Rank ===

`rank(expression)`



=== RowFirst ===

`rowfirst(varlist)`



=== RowLast ===

`rowlast(varlist)`



=== RowMax ===

`rowmax(varlist)`



=== RowMean ===

`rowmean(varlist)`



=== RowMedian ===

`rowmedian(varlist)`



=== RowMin ===

`rowmin(varlist)`



=== RowMiss ===

`rowmiss(varlist)`



=== RowNonMiss ===

`rownonmiss(varlist)`



=== RowPctile ===

`rowpctile(varlist)`



=== RowSd ===

`rowsd(varlist)`



=== RowTotal ===

`rowtotal(varlist)`



=== Sd ===

`sd(expression)`



=== Seq ===

`seq()`



=== Ske3w ===

`skew(expression)`



=== Std ===

`std(expression)`



=== Tag ===

`tag(varlist)`



=== Total ===

`total(expression)`

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== See also ==

[[https://www.stata.com/manuals/degen.pdf|Stata manual for egen]]



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