Re: st: Comparing datasets

[Michael McCulloch <mm@pinest.org>]

Hi Tim,
Is your example for Stata 10? When I try to reproduce your nifty 
example, I get:
. save "`auto2'", replace
invalid file specification
r(198);

Michael



> There is probably a more elegant solution to this, but saving the
> variable names in a local macro and comparing the macro lists might
> work, e.g., :
>
>
> . sysuse auto.dta, clear
> (1978 Automobile Data)
>
> . preserve
>
> . drop make
>
> . tempfile auto2
>
> . save "`auto2'", replace
> file C:\DOCUME~1\twade\LOCALS~1\Temp\ST_00000005.tmp saved
>
> . restore
>
> .
> . local x
>
> . foreach var of varlist _all {
>   2. local x "`x' " "`var'"
>   3. }
>
> . di "`x'"
>  make price mpg rep78 headroom trunk weight length turn displacement
> gear_ratio foreign
>
> .
> . clear
>
> . use `auto2'
> (1978 Automobile Data)
>
> .
> . local x2
>
> . foreach var of varlist _all {
>   2. local x2 "`x2' " "`var'"
>   3. }
>
> .
> .
> . local diff2: list x - x2
>
> . di "`diff2'"
>  make
>
> .
> end of do-file
>
> . Hope this helps, TIm
>
>
>
> On Tue, Sep 16, 2008 at 1:22 PM, Raphael Fraser
> <raphael.fraser@gmail.com> wrote:
>  > Robert,
>  >
>  > The problem with cf2 & cf3 is that, they compare the variable VALUES.
>  > I intend to append the data and just want to ensure that the variable
>  > NAMES match and not the variable values.
>  >
>  > At present -append- offers no way to check this.
>  >
>  > Raphael
>  >
>  > On Tue, Sep 16, 2008 at 3:35 AM, Robert A Yaffee 
> <bob.yaffee@nyu.edu> wrote:
>  >> Raphael,
>  >>    Check out the compare cf2 and cf3 commands.   The latter two 
> can be found on the SSC archive.
>  >>            Regards,
>  >>                 Robert
>  >>
>  >> Robert A. Yaffee, Ph.D.
>  >> Research Professor
>  >> Silver School of Social Work
>  >> New York University
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