# Re: st: RE: egen & sum()

 From Neil Shephard To statalist@hsphsun2.harvard.edu Subject Re: st: RE: egen & sum() Date Wed, 26 Nov 2008 10:16:10 +0000

```Martin Weiss wrote:
> See - help whatsnew8to9- and search for "sum()"
>
> "The following egen functions have been renamed:
>
>                 old name    new name
>                 ------------------------
>                 any()       anyvalue()
>                 eqany()     anymatch()
>                 neqany()    anycount()
>                 rfirst()    rowfirst()
>                 rlast()     rowlast()
>                 rmean()     rowmean()
>                 rmin()      rowmin()
>                 rmiss()     rowmiss()
>                 robs()      rownonmiss()
>                 rsd()       rowsd()
>                 rsum()      rowtotal()
>                 sum()       total()
>                 ------------------------"
>
Thanks Martin, your memory is clearly better than mine to remember that
from 2005!  I thought that might have been the case and had read -man
whatsnew- but hadn't gone back further (I also neglected to state that
I'm using Stata 10.1 born 11 Aug 2008)

I just checked a few others and it seems that the old names are still
valid (see continued examples below), presumably to provide a degree of
backwards compatability when running scripts under old versions?

. clear

. set obs 10
obs was 0, now 10

. gen a = _n

. gen b = sum(a)

. egen b2 = sum(a)

. egen b3 = total(a)

. egen c = rmean(b b2 b3)

. egen c2 = rowmean(b b2 b3)

. egen d = rlast(b b2 b3)

. egen d2 = rowlast(b b2 b3)

. egen e = rmin(b b2 b3)

. egen e2 = rowmin(b b2 b3)

. list

+-------------------------------------------------------------+
|  a    b   b2   b3          c         c2    d   d2    e   e2 |
|-------------------------------------------------------------|
1. |  1    1   55   55         37         37   55   55    1    1 |
2. |  2    3   55   55   37.66667   37.66667   55   55    3    3 |
3. |  3    6   55   55   38.66667   38.66667   55   55    6    6 |
4. |  4   10   55   55         40         40   55   55   10   10 |
5. |  5   15   55   55   41.66667   41.66667   55   55   15   15 |
|-------------------------------------------------------------|
6. |  6   21   55   55   43.66667   43.66667   55   55   21   21 |
7. |  7   28   55   55         46         46   55   55   28   28 |
8. |  8   36   55   55   48.66667   48.66667   55   55   36   36 |
9. |  9   45   55   55   51.66667   51.66667   55   55   45   45 |
10. | 10   55   55   55         55         55   55   55   55   55 |
+-------------------------------------------------------------+

Should these synonyms be mentioned in -man egen- or will they quietly
fade away in subsequent releases?  (I guess Stata Corp. are the only

Neil

--
"We should make things as simple as possible, but not simpler" - Anon (not Albert Einstein)

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