Are the numbers all positive? If yes, have you considered
diff(log(x))? hope this helps. spencer graves
Chris Moyer wrote:
Hello-
I am working with a dataset of very small numbers (e.g., 0.10 to 0.00010)
and want to display the magnitude and direction of change between two
measurements in time. For example, for one subject the first measurement
was 0.0013 and the second measurement was 0.13 translating into
approximately 9900% change while in the next subject has a change of -20%.
Can anybody point me toward a reference or technique for displaying the
magnitude and direction of change?
Thanks in advance.
SPLUS 6.1 on Windows
Chris Moyer
Fish Biologist
--------------------------------------------------------------------
This message was distributed by s-news@lists.biostat.wustl.edu. To
unsubscribe send e-mail to s-news-request@lists.biostat.wustl.edu with
the BODY of the message: unsubscribe s-news
--
Spencer Graves, PhD, Senior Development Engineer
O: (408)938-4420; mobile: (408)655-4567
|