02-03-2016 05:21 AM
I have an experiments with 2 different crop rotations, 16 fertilizing treatments. The design of the experiment is split-block design with 2 blocks. In total 64 eperimental units. We have made measurements during 12 years. Hence, we think the repeated statement would be a good idea to use in PROC MIXED.
The model looks like this:
proc mixed data=Test9001;
class Year Block Fert Rotation;
model Yield = Rotation Fert Fert*Rotation Year Year*Rotation Year*Fert Year*Rotation*Fert/ ddfm = sat outp=test;
random Block Block*Rotation Block*Fert Block*Fert*Rotation;
repeated / type=AR(1) subject=Block*Fert*Rotation;
However, in the attached Word-file the Subjects =1 and Max Obs Per Subject = 768. Shouldn’t it be Subjects = 64 (since I have 64 eperimental units) and Max Obs Per Subject =12 (since I have 12 measuremenst/experimental unit) ???? Is the subject statement (Block*Fert*Rotation) above wrong??