Re: st: reshape value label bug?

[Jeph Herrin <stata@spandrel.net>]

I get the same problem if I -reshape clear- and if I first to remove
ALL value labels:

==========================================================================
. u temp

. label drop _all

. reshape clear

. reshape long payor_ , i(pat_id)
(note: j = 1 2 3 4 5 6 7 8 9)

Data                               wide   ->   long
-----------------------------------------------------------------------------
Number of obs.                     1653   ->   14877
Number of variables                  12   ->       5
j variable (9 values)                     ->   _j
xij variables:
            payor_1 payor_2 ... payor_9   ->   payor_
-----------------------------------------------------------------------------

. label list
class2:
           1 ACE-inhibitor or ARB
           2 Aldosterone Receptor Antagonist
           3 Beta Blocker
           4 Digoxin
           5 Loop Diuretics
==========================================================================

And look, _j also gets a variable name:

==========================================================================

. d _j

              storage  display     value
variable name   type   format      label      variable label
-----------------------------------------------------------------------
_j              byte   %31.0g      class2     Corresponds to med group

==========================================================================

?

Jeph



On 1/11/2011 3:01 PM, Sergiy Radyakin wrote:
> Hi, Jeph,
>
> try issuing -reshape clear- before you run your reshape. I am almost
> sure this may be the case.
> But if it doesn't help, could you say whether "class" has any
> occurance in your dataset before reshape?
> E.g. there is a variable named class, (or class1, or etc), value label
> "class" or anything similar.
>
> Best, Sergiy
>
>
>
> On Tue, Jan 11, 2011 at 10:47 AM, Jeph Herrin<stata@spandrel.net>  wrote:
> > I cannot reproduce this with any system or web datasets, but it
> > happens everytime for me; in the below I load a dataset, show that
> > there is no value label named -class2-, apply -reshape-, and suddenly
> > a new value label exists, and is assigned to my new variable _j. This
> > occurs whether or not I specify the variable with option -j()-.
> >
> > What gives?
> >
> > . u analytic, clear
> > . d, short
> >
> > Contains data from analytic.dta
> >   obs:         1,653
> >   vars:            12                          11 Jan 2011 09:29
> >   size:        46,284 (99.9% of memory free)
> > Sorted by:  pat_id
> >
> > . label list class2
> > value label class2 not found
> > r(111);
> >
> > . reshape long payor_, i(pat_id)
> > (note: j = 1 2 3 4 5 6 7 8 9)
> >
> > Data                               wide   ->     long
> > -----------------------------------------------------------------------------
> > Number of obs.                     1653   ->     14877
> > Number of variables                  12   ->         5
> > j variable (9 values)                     ->     _j
> > xij variables:
> >             payor_1 payor_2 ... payor_9   ->     payor_
> > -----------------------------------------------------------------------------
> >
> > . label list class2  //????????????
> > class2:
> >            1 ACE-inhibitor or ARB
> >            2 Aldosterone Receptor Antagonist
> >            3 Beta Blocker
> >            4 Digoxin
> >            5 Loop Diuretics
> >
> > . d
> >
> > Contains data
> >   obs:        14,877
> >   vars:             5
> >   size:       312,417 (99.8% of memory free)   (_dta has notes)
> > -------------------------------------------------------------------------------------------------------------------------------
> >               storage  display     value
> > variable name   type   format      label      variable label
> > -------------------------------------------------------------------------------------------------------------------------------
> > pat_id          str9   %9s                    PT ID
> > _j              byte   %31.0g      class2     Corresponds to med group in
> > Table 1
> > readmit30       byte   %9.0g       noyes      Readmission within 30 days
> > endpoint        byte   %15.0g      endpoint   Primary Endpoint
> > payor_          byte   %9.0g
> > -------------------------------------------------------------------------------------------------------------------------------
> > Sorted by:  pat_id  _j
> >      Note:  dataset has changed since last saved
> >
> > *
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