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Re: st: Creating new variables in mata.
From
Phil Schumm <[email protected]>
To
Statalist Statalist <[email protected]>
Subject
Re: st: Creating new variables in mata.
Date
Wed, 19 Feb 2014 11:40:28 -0600
On Feb 19, 2014, at 9:22 AM, Amadou DIALLO <[email protected]> wrote:
> Maybe this has been already answered, but I can't find it. What is the equivalent of the stata code below in mata?
>
> forv i = 1/10 {
> cap drop var`i'
> g var`i' = ...
> }
>
> I've read Bill's "mata matters: macros" and creating new variables, but I can't find how to parse the "i".
A direct translation would look something like this:
for (i=1; i<=10; i++) {
varname = sprintf("var%f", i)
if (_st_varindex(varname)!=.) {
st_dropvar(varname)
}
(void) st_addvar(<type>, varname)
// use st_store() to fill the new variable
}
where <type> is the storage type of the new variables you are creating. However, without some more detail about what you are trying to do, it is impossible to say whether this will be useful to you (or even whether it is appropriate to be doing this in Mata).
-- Phil
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