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RE: st: -reshape- with more than one j()?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: -reshape- with more than one j()?
Date   Sun, 2 Mar 2008 17:08:49 -0000

In addition to other suggestions, note that you'd need to standardise on "manure". 

Nick 
n.j.cox@durham.ac.uk 

Jia Xiangping

As both -seed- and -fert- have several categories, Phil's approach is
more efficient. Thanks both of you, Phil and Friedrich.
.
On 2/29/08, Phil Schumm <pschumm@uchicago.edu> wrote:

> On Fri, Feb 29, 2008 at 2:34 PM, Jia Xiangping
> <jiajoseph@googlemail.com> wrote:
> >  After several collapsing, I have such a data,
> >
> >  ID      Seed    Fert    x
> >  1       good    mamure  3
> >  1       good    chem.   4
> >  1       bad     chem.   2
> >  1       bad     manuure 1
> >
> >  But I need to further collapse to:
> >  ID   x_good_maure       x_good_chem   x_bad_manure  x_bad_chem
>
>
> . gen foo = Seed + "_" + subinstr(Fert,".","",.)
>
> . drop Seed Fert
>
> . ren x x_
>
> . reshape wide x_, i(ID) j(foo) string
> <output omitted>
>
> . li, ab(14)
>
>      +--------------------------------------------------------------+
>      | ID   x_bad_chem   x_bad_manure   x_good_chem   x_good_manure |
>      |--------------------------------------------------------------|
>   1. |  1            2              1             4               3 |
>      +--------------------------------------------------------------+

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