Brute force answer:

Create 456 variables = 0. Write 456 IF statements:

if STOP1 = 'a' and STOP2 = 'b' AB = 1. if STOP2 = 'a' and STOP3 = 'b' AB = 1. etc...

Improvements? I sure wouldn't want to type this out by hand, or have or edit line by line -- too much room for error.

On Thu, 25 Feb 1999 21:23:13 +1000, "Peter Newcombe" <newc@psy.uq.edu.au> wrote:

: Dear group : Could someone help with this syntax task: We have 10 variables where each : represents a tourist stop that people have taken on trips throughout their : travels (eg Stop 1 where they stayed the 1st night, stop 2 where they stayed : the 2nd night and so on). For each of these variables there are 30 possible : destinations (these same 30 are value labels for each of the stops). We : would like to gain data relevant to the number of times people travelled : from point A to Point B (regardless of whether it may have been from Stop 1 : to 2 or Stop 9 to 10) as well as times (ie frequency of trips) travelled : from Point B to Point A. Further this needs to be repeated for all possible : combinations within the 30 destinations (= 465 combinations). Is there some : syntax command that might abbreviate this task (perhaps LOOP or VECTOR?) : : : -- : Dr Peter Newcombe : School of Psychology : University of Queensland : Australia 4072 : newc@psy.uq.edu.au : :