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RE: st: Comparing datasets


From   "Rajesh Tharyan" <R.Tharyan@exeter.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Comparing datasets
Date   Thu, 18 Sep 2008 17:42:34 +0100

Hi,
Just type 

version 9
code follows here
.....
...

Cheers
rajesh


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Michael McCulloch
Sent: 18 September 2008 17:36
To: statalist@hsphsun2.harvard.edu
Subject: RE: st: Comparing datasets

Sorry Rajesh, I don't know what is meant by putting v9 on top of the 
do file! Michael

>Hi,
>Did you try putting version 9 on top of the do file and running it? it did
>not work for me on version 9 when I ran it as is. However, it did when I
put
>version 9 on top of the do file.
>Hth
>rajesh
>
>-----Original Message-----
>From: owner-statalist@hsphsun2.harvard.edu
>[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Steven Samuels
>Sent: 18 September 2008 15:28
>To: statalist@hsphsun2.harvard.edu
>Subject: Re: st: Comparing datasets
>
>
>I haven't been following this thread, but in the past I had troubles 
>after running statements like:
>
>tempfile t1
>save `t1', replace
>
>Technical support told me that "replace" should not be used when 
>saving temporary files.
>
>-Steve
>
>On Sep 18, 2008, at 10:11 AM, Tim Wade wrote:
>
>>  I'm not sure what the problem is, I tested this example in Stata 9.2,
>>  and it seems to work there, as does this improved example based on
>>  posts by David and Eva:
>>
>>
>>  sysuse auto.dta, clear
>>  tempfile auto
>>  save "`auto'", replace
>>  clear
>>
>>  sysuse auto.dta, clear
>>  drop make
>>  tempfile auto2
>>  save "`auto2'", replace
>>  clear
>>
>>  desc using "`auto'", varlist
>>  local x `r(varlist)'
>>
>>  desc using "`auto2'", varlist
>>  local x2 `r(varlist)'
>>
>>
>>  local diff2: list x - x2
>>   di "`diff2'"
>>
>>
>>
>>  On Tue, Sep 16, 2008 at 5:01 PM, Michael McCulloch <mm@pinest.org> 
>>  wrote:
>>>  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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