maximum command in stata

[Shigeru Matsumoto]

> Dear Sir or Madam,

>

> I tried to use ml maximize command in Stata.

> But I received the following error message.

>

> Following the manual, I used the following program.

>

> program mynormal1_lf

> version 16

> args lnfj mu sigma

> quietly replace 'infj' = ln(normalden($ML_y1, 'mu', 'sigma') end

>

> sysuse auto

>

> . ml model lf mynormal1_lf (mpg = weight displacement) ()

>

> ml maximize

>

> invalid name

> r(198);

>

>

> Other mle-type programs such as mlexp work fine.

> Do I need to install programs to activate ml program in my Stata?

>

> Shigeru Matsumoto

[Nick Cox]

ml is part of Stata as purchased. You don't need to install it separately if you have installed Stata. Indeed that isn't possible.

Looking at your code I wonder whether you need

quietly replace 'infj' = ln(normalden($ML_y1, 'mu', 'sigma') end

to be two lines

quietly replace 'infj' = ln(normalden($ML_y1, 'mu', 'sigma')
end

[Shigeru Matsumoto]

Thanks Nick. I moved "end" to the next line. However, the program does not work still... I got the exactly same error message.

[Nick Cox]

Another one

 'infj'

should be

 `lnfj'

Notice the left single quote ` not '

That seems to apply to all your references to local macros.

[Shigeru Matsumoto]

I couldn't distinguish between ' and ` due to my presbyopia. It worked.

Appreciate Nick!