Create Functions using Mata

[Scarlet Ling]

Hi All,

I am new to the Mata programming and currently trying to convert some codes from Matlab to Stata using Mata. I am sorry if my question seems rather straightforward.

I would need to create functions that can be ran individually. Should I use ado files or do-files to create the functions?

Also, when I tried to run a do-file with Mata, it seems that the program cannot be ran automatically by hitting the Execute button. Does that mean I shouldn't add the command "Mata" and "end" to the do-file?


Thank you in advance!

[Maarten Buis]

It is a bit hard to answer your question, because you don't show what you have done. You can define a function in Mata in a .do file or in an .ado file. You could for example copy the code below in a .do file and you should be able to run it.

clear all
mata:
string scalar hello(string scalar who) {
    return("hello " + who)
}

hello("world")
hello("Scarlet")
end