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Re: st: twoway lfit and time series operators
From
"David Cancel" <[email protected]>
To
[email protected]
Subject
Re: st: twoway lfit and time series operators
Date
Mon, 11 Oct 2010 12:10:05 -0700 (PDT)
PLEASE HELP, HOW DO I GET RID OF ALL THESE STATALIST EMAILS? DO NOT KNOW
WHAT I DID WRONG, BUT NOT INTERESTED IN STATALIST. THANK YOU ALL.
> Jorge Eduardo Perez <[email protected]> writes that
> -twoway lfit- fails when time-series operators are applied
> to the variables.
>
>> -twoway lfit- does not work with time series operators in Stata 11.
>> Is there a reason for this aside from -twoway lfit- being out of
>> date? -scatter- deals with time series operators properly.
>
>> . sysuse sp500
>> . tsset date
>> . scatter l.open l5.close
>> . twoway lfit l.open l5.close
>>
>> I had to use this workaround
>>
>> . gen l5close=l5.close
>> . twoway lfit l.open l5close
>
> -twoway lfit- was not intended to support time-series operators,
> but the documentation is silent on this point and the error
> message when operators are used is admittedly poor.
>
> Regardless, support for time-series operators will be added to
> -twoway lfit-, -twoway lfitci-, -twoway qfit-, and -twoway qfitci-
> in a future update.
>
> In the interim, anyone wanting to user time-series operators
> with these -twoway- plottypes can use Jorge's workaround.
>
>
> -- Vince
> [email protected]
>
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