Programming the statistical procedures from SAS

Repeated measure

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Repeated measure

Hi All, I have 2 -yr field data that I want to analyse together (Multi-yr analysis). I have all parameters measured for the two years. but when I put my repeated measure code below

 

proc mixed data;

class Year Rep T_System;

model &var = T_System;

random Rep(year) year year*T_System/solution;

repeated year/subject=rep*T_System type=ar(1) RCORR;

Lsmeans T_System/diff=all;

 

I GET THIS MESSAGE "

NOTE:

%Rotation (var=MC060);

 

NOTE: An infinite likelihood is assumed in iteration 0 because of a nonpositive definite estimated R matrix for Rep*T_System 1 HIGH

DUR.

 

HIGH DUR is one of the crops am analysing. This code has been workingfor me before (even on other two yr-analysis), Please is there anything I am not doing right?. Or is there any special character in my data? (please find attached).

 

Thanks

 

-OA

 

 

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