Gtools commands are limited by matsize about stata-gtools HOT 2 OPEN

There is actually a fix for this, which blows my mind and am somewhat hesitant to implement. Error:

matrix a = J(1, 20000, 1)

No error (!!!)

mata st_matrix("a", J(1, 20000, 1))

The latter, howver, takes 8 seconds (!) and does seem to consume a lot more memory than it should. It seems that matrix for whatever reason is very slow and memory hungry. Both of these are instantaneous:

mata a = J(1, 20000, 1)
set obs 20000
gen a = 1

from stata-gtools.

Another fix: Save from mata to tempfile; implement function in C: sf_read_vector_tempfile

from stata-gtools.