Hi,
I haven't been able to find answers to the following questions:
1. Why do you have to force a linear regression through the origin
when using phylogenetically independent contrasts (PICs)?
2. If you suspect an inverse linear relationship, would you transform
one axis so you could still force the regression through the origin?
If so, what's the best transformation?
Thanks for any help,
Gernot Huber
_______________________________________________
Gernot Huber
Ecology and Evolutionary Biology tel +1.607.254.4240
Corson Hall E137 fax +1.607.255.8088
Cornell University g...@cornell.edu
Ithaca, NY 14853 USA
We can't solve problems by using the same kind of thinking we used
when we created them.
—Albert Einstein
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