Re: st: One varlist into a matrix with multiple columns

[Scott Merryman <scott.merryman@gmail.com>]

Do you mean something like:

clear
set obs 10
gen i = _n
expand 10
bys i: gen j = _n
gen x = rnormal()
reshape wide x , i(i) j(j)
l

Scott


On Wed, Aug 14, 2013 at 3:15 PM, Samuel Bailey <smbailey1@uchicago.edu> wrote:
> Hello,
>
> I have a dataset with three columns: the first two are the i and j
> coordinates of a potential matrix, and the third is the data that
> would go into the (i,j)th spot. Is there a way (in Stata or Mata) to
> create a matrix directly from these three variables? I've tried using
> -mkmat- to create a column vector which gets sent to Mata, where it's
> looped through into a new matrix. However, as a column vector the data
> exceeds the maximum matrix size in my version of Stata (though as a
> square matrix it would not).
>
> Sincerely,
> Sam Bailey
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