Tecnical problem with ffind (STATA beginner)

[joker2500]

Dear Sirs,

I'm new, and this is my first time that I work on this software. I'm writing my thesis and for empiric analysis, I've to learn how stata works. Fortunately my Professor supports me to write this code, indeed today he corrected my work. Also he told me that the script now should works.
However when I executed, it didn't work completely ; STATA wrote: "unrecognized command: ffind (r199)".
the error was in this string (bold characters):
* Defining FF49-Industries;
*destring SIC, replace;
ffind SIC, newvar(ffind_49) type(49) // Source: http://personal.anderson.ucla.edu/ju...key/data.html;
*egen ff49_1=group(ffind_49);
*egen blubb=count(ff49_1), by(ff49_1);
*replace blubb=. if blubb<50; // Only run regressions per ind-year if there are at least 50 obs. per ind-year;
* egen ff49=group(ff49_1) if blubb!=.;

* drop blubb ;

Please, someone is able to help me and fix the problem?

Thanks
I really appreciate.

[Sarah Edgington]

It looks like you probably haven't installed ffind. You need to do that since it's, apparently, a user-written command.

Please read the FAQ for this forum. The link is located in the upper left. In particular, please note our preference for real names (item 6) and the instruction to provide a source for user-written commands (item 12).

[Nick Cox]

joker2500: As Sarah clearly explains, we strongly prefer full real names here.

I'm piling it on, but I will also advise that "Dear Sirs" is widely considered sexist as a salutation. See e.g. http://www.apaonlinecsw.org/apa-guid...se-of-language

In a technical forum, you don't need salutations or signatures any way!

All that said, ffind appears to be available from https://sites.google.com/site/judsoncaskey/data