Re: st: RE: RE: RE: RE: Extracting results from -rolling- in one file per window

[Nick Cox <njcoxstata@gmail.com>]

You are confusing the syntax for globals and locals.  For example,
given your initial assignment

global counter "0"

(It's purely a style point, but when I want a -global- to hold numbers
I would go

global counter = 0

but the effect of your statement is the same in this case.)

The next use is legal:

global counter=`counter'+1

But only by accident is it right. Stata sees a reference to -local-
called `counter'; it doesn't exist, so Stata just skips that and sees.

global counter = +1

and that's OK. But you meant

global counter = $counter + 1

But later when you go

save `counter', replace

there's still no -local- with that name, so Stata sees

save, replace

and that throws you out.

This is all documented in [U] in the first sections on macros. You
have to read and understand that stuff to be able to write programs.

Nick
njcoxstata@gmail.com


On 17 March 2014 01:13, Micha Schildmann <micha.schildmann@yahoo.de> wrote:
> Dear Joe,
>
> again your reply was most welcomed. I tried the following code
>
> global counter "0"
> capture program drop rollingwindow
> program rollingwindow
>
> global counter=`counter'+1
> global tflist ""
>
>
> foreach var of varlist *SA{
> reg Mid `var'
> tempfile tfcur
> parmest, idstr("`var'") saving(`"`tfcur'"', replace) flis(tflist)
> }
> preserve
> clear
> append using $tflist
> sencode idstr, gene(xvar)
> lab var xvar "X-variable"
> keybygen xvar, gene(parmseq)
> drop if parmseq==2
> egen rank = rank (-t)
> drop if rank>30
> save `counter', replace
> restore
> end
>
>
> rolling, window(4) stepsize (4) recursive: rollingwindow
>
> but I get the following error
>
>     - save `counter', replace
>     = save , replace
> invalid file specification
>
> when enabling trace.
>
> This confuses me as I tried something very similar and it worked.
>
> Do you or anyone else have any idea what could cause this error?
>
> Best regards
> Micha
>
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