Generating new variables from 2 string values

[Kyle Harries]

Hi everyone, I would like to create new dummy variables (LOCAL & INTL) from 2 string values taken from variables ORIGIN and TARGET.
Below is an example:

ORIGIN	TARGET	LOCAL	INTL
US	US	1	0
NL	CH	0	1
GB	TH	0	1
CH	CH	1	0
IN	BR	0	1

So, what line of code should I use to create something like:

Local = 1 if ORIGIN = TARGET (INTL = 0)
INTL = 1 if ORGIN =/= TARGET (LOCAL = 0)

(the contry codes listed are only an example)

I hope that makes sense. Thank you!

-KH

[George Ford]

g local = ORIGIN == TARGET
g intl = ORIGIN != TARGET
tab2 local intl

[Nick Cox]

George Ford is bang on but I want to add that these indicator (you say "dummy") variables are complements, so there is little point in having both.

[Kyle Harries]

Brilliant! Thank you George

[George Ford]

As Nick says,

 
 g local = ORIGIN == TARGET g intl = 1-local

or just use ~local for intl. It is sometimes easier to have both variable defined.