interaction
terms, but I don't know how to overcome this.
Any advice would be greatly appreciated. I'm new to R
and analysis such as this.
Thank you,
Sarah Mclean
[EMAIL PROTECTED]
http://mobile.yahoo.com.au - Yahoo! Mobile
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- 1)
Error in chol((value + t(value))/2) : non-positive
definite matrix in chol
I know the problem is with the random interaction
terms, but I don't know how to overcome this.
Any advice would be greatly appreciated. I'm new to R
and analysis such as this.
Thank you,
Sarah Mclean
[EMAIL
.
I've learned a lot
about S-Plus / R by doing that -- and solved a lot
of my own problems
that way.
hope this helps. spencer graves
Sarah Mclean wrote:
Hi,
if I have posted this twice, please ignore this.
I'm
not sure if I sent it to the correct e-mail
address
the first
Hi,
here is a clarified version of my problem.
I have a total of 4*74 observations on 74 different
mums in 5 different populations of mums, subject to 6
treatments (2 moisture levels*3 substrate types).
I want to know if mum interacts with moisture level or
substrate type.
Population, moisture
