Re: st: -args- how to flag when missing or too many arguments

[John Antonakis <John.Antonakis@unil.ch>]

Thanks! Giving 5 numbers instead of 4 displays the error I want.

However, missing a number still displays the default error:

<0 invalid name

instead of what I wanted displayed.

Any other ideas?

Best,
J.

__________________________________________

John Antonakis
Professor of Organizational Behavior
Director, Ph.D. Program in Management

Faculty of Business and Economics
University of Lausanne
Internef #618
CH-1015 Lausanne-Dorigny
Switzerland
Tel ++41 (0)21 692-3438
Fax ++41 (0)21 692-3305
http://www.hec.unil.ch/people/jantonakis

Associate Editor
The Leadership Quarterly
__________________________________________

On 21.03.2013 22:49, daniel klein wrote:
> John,
>
> I think I would address this with something like this
>
> cap pr drop john
> pr john
> 	vers 12.1
> 	
> 	args a b c d
> 	if !inrange(`: word count `0'', 1, 4) {
> 		di as err "Please enter data after " ///
> 		"the command john as follows: vars df N chi"
> 		e 198
> 	}
> 	numlist "`0'" ,int r(>0)
> 	
> end
>
> Best
> Daniel
> --
> Hi:
>
> I am writing a program and would like Stata to return an error if an
> argument is missing or there are too many of them.
>
>
> For example, if an argument is not an integer, the below will return an error:
>
>
>    program define john, rclass
>    version 12
>    args no_vars df N chi
>
>    if `no_vars'<0 | `df'<0 | `N'<0 | `chi'<0 {
>    di in red "You have to use integers."
>    exit 498
>    }
> end
>
> Now, how do I make Stata display:
>
> di in red "Please enter data after the command john as follows: vars df N chi"
>
>
> .....in cases where (a) there is a missing value (i.e., the user
> missed putting 4 numbers) and (b) if the user provides too many
> numbers (i.e., 5 instead of 4).
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/