print format for difftime

"BXC (Bendix Carstensen)" <bxc at steno.dk> writes:

Has anyone written a function that will print a difftime in the form:

hh:mm:ss

or

yy-mm-dd hh:mm:ss

depending on the actual size.
(sloppy notation for months/minutes, but surely you get the point).

Ummm, how are you going to convert a number of days to
years/months/days without specifying an origin? (00-01-00 could be
28,29,30, or 31 days.) Unless, of course you want to deal in "banker's
months" of 30 + 5.25625/12 days.

O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907