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Re: st: Comparing datasets
What is happening is in this command:
. desc using "`auto'", varlist
I get error message:
invalid file specification
Would the file be written differently for Mac Stata?
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 <[email protected]> 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
<[email protected]> 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 <[email protected]>
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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