Accessing locals in loops

[Belinda Foster]

Hello. I would like to access a number of locals in mata using a for loop and ideally create an equal number of objects with the values. The following code does not work but it gives an idea of what i am trying to do:

local foo1 = 1
local foo2 = 2
local foo3 = 3

for(i=1; i<=3; i++) {
    foomata[i] = st_local("foo`i'")
}

[Joseph Coveney]

for (i=1; i<=3; i++) {
    local_name = "foo" +  strofreal(i)
    foomata[i] = st_local(local_name)
}

(Untested)

[Belinda Foster]

It gives an error: 3201 vector required

[Joseph Coveney]

Well, of course you need to define the vector beforehand—I was addressing only the local macro problem in the loop, which was what I though you we're asking about.

Here:

.ÿversionÿ14.2

.ÿ
.ÿclearÿ*

.ÿsetÿmoreÿoff

.ÿ
.ÿlocalÿfoo1ÿ=ÿ1

.ÿlocalÿfoo2ÿ=ÿ2

.ÿlocalÿfoo3ÿ=ÿ3

.ÿ
.ÿlocalÿlinesizeÿ`c(linesize)'

.ÿsetÿlinesizeÿ80

.ÿ
.ÿmata:
-------------------------------------------------ÿmataÿ(typeÿendÿtoÿexit)ÿ------
:ÿ
:ÿFooÿ=ÿJ(1,ÿ3,ÿ"")

:ÿ
:ÿforÿ(i=1;ÿi<=3;ÿi++)ÿ{
>ÿÿÿÿÿlocal_nameÿ=ÿ"foo"ÿ+ÿÿstrofreal(i)
>ÿÿÿÿÿFoo[i]ÿ=ÿst_local(local_name)
>ÿ}

:ÿ
:ÿFoo
ÿÿÿÿÿÿÿ1ÿÿÿ2ÿÿÿ3
ÿÿÿÿ+-------------+
ÿÿ1ÿ|ÿÿ1ÿÿÿ2ÿÿÿ3ÿÿ|
ÿÿÿÿ+-------------+

:ÿ
:ÿend
--------------------------------------------------------------------------------

.ÿ
.ÿsetÿlinesizeÿ`linesize'

.ÿ
.ÿexit

endÿofÿdo-file


.

[Belinda Foster]

Yes, I realized this after i posted. Thank you.