Anton: > Let b be a block containing your session times. That works if the durations are hours:minutes:seconds -- you are using REBOL's standard date arithmetic.
But, if I read Stuart's question right, he has days:hours:minutes. They don't add right in the same way: 1:12:00 + 1:12:00 should be 3:00:00 in his example (1 day & 12 hours, twice) In REBOL, 1:12:00 + 1:12:00 = 2:24 Here's a couple of functions that misuse the date format to treat it as d:h:m for addition. The result is in hours:minutes -- you'll need a bit more arithmetic to convert that to days:hours:minutes -- after dividing to get the average, that is. make-hm: func [d1 [time!] ][ return to-time join d1/minute [":" d1/second ":00"] ] add-dhm: func [d1 [time!] d2 [time!] ][ return (make-hm d1) + (make-hm d2) + (24 * 3600 * to-time (d1/hour + d2/hour)) ] ;; examples: add-dhm 1:12:0 1:12:0 ;; 1.5 days + 1.5 days == 72:00 ;; seventy-two hours = three days add-dhm 0:30:30 0:30:30 == 61:00 add-dhm 2:1:45 0:0:15 == 50:00 Sunanda. Sunanda -- To unsubscribe from this list, just send an email to [EMAIL PROTECTED] with unsubscribe as the subject.
