Question

I’m currently writing a little Stata program in an .ado file. Within this .ado file I want to use Mata in order to use the optimize() functions. When I type end in order to exit MATA, the .ado file reads this as the end of the program (I think). How do I go about this? I’m really new to both Stata and Mata and especially the use of both of them simultaneously. Here’s an example of my code:

program define test
args epv prev0 prev1 sample_size bin_prev rep

local prevdiff=`prev1'-`prev0'
local t=-log(1-`prev0')
local eventprob=`epv'/`sample_size'
local lambda_c=0.5
local lambda_0=1
local lambda_1=-log(1-`prev0'-`prevdiff')/`t'

mata
mata clear

void cens_func(todo, x, y, g, H)
{
y = "some function of x and the locals"
}

S = optimize_init()
optimize_init_evaluator(S, &cens_func())
optimize_init_which(S, "min")
optimize_init_params(S, 1)
temp=optimize(S)
st_local("lambda_c",strofreal(temp))

end

some Stata code here

end

Thanks in advance.

Answer 1

You should put the Mata code in a separate block at the end.

Schematically,

program 

end 

mata: 

end

Also, don’t use the program name test, which is the name of an official command.

Also, see

http://www.stata.com/support/faqs/resources/statalist-faq/#spell

for correct spellings Stata, Mata.