user-defined contrasts in UNIANOVA

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user-defined contrasts in UNIANOVA

Kylie Lange
Hi all,

This is a common problem I know, but I just haven't been able to set up
user-defined contrasts in UNIANOVA appropriately. Hopefully someone here
can help me out.

The design has one fixed factor (island - 4 levels) with a random factor
(nest) nested within it. I'm trying to get a contrast that will compare
levels 1 & 2 of 'island' to levels 3 & 4. I've been trying various
LMATRIX settings but am obviously not structuring it in the right way as
I get the 'L Matrix is not estimable' error.

Here is the existing basic syntax:

UNIANOVA
  eggweight  BY Island nest
  /RANDOM = nest
  /DESIGN = Island nest(Island) .

Thanks for any pointers.

Cheers,
Kylie.