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Re: st: how to access Stata's record of the variable data is sorted on


From   Nick Cox <[email protected]>
To   "[email protected]" <[email protected]>
Subject   Re: st: how to access Stata's record of the variable data is sorted on
Date   Wed, 25 Sep 2013 13:17:04 +0100

Good point. An alternative, which I favour personally, is to pass "`:
sortedby'" from Stata to Mata as an argument to your Mata function.
That can always be automated, I think.
Nick
[email protected]


On 24 September 2013 20:35, Phil Schumm <[email protected]> wrote:
> On Sep 24, 2013, at 1:46 PM, Nick Cox <[email protected]> wrote:
>> . mata :
>> : which = "foreign"
>> : which == sprintf("`: sortedby'")
>
>
> This will work interactively, but not in a function, since the expansion will occur at compile time instead of runtime.  Alternatives that work inside a function include:
>
>     printf(st_macroexpand("`" + ":sortedby" + "'"))
>
> or
>
>     stata("des, varl", 1)
>     printf(st_global("r(sortlist)"))
>
> and possibly others that I don't know about.  Seems odd that the current sort order is not available via c()...
>
>
> -- Phil
>
>
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