non estimated interaction between continuous and categorical variables in mixed model

FI — Thu, 22 Mar 2018 03:19:00 GMT

Hi,

I am trying to run an ANCOVA test. here I have one continuous variable (PreN). But SAS cannot estimate this effect on ANOVA table. It gives me 0 DF and non-estimated F and P values.

I used this model.

proc mixed data=mBiomMMMm plots=residualpanel;
class Year Trt Block Plot;
model BiomN = Trt Year Year*Trt PreN*Trt Block/ solution;
repeated Year / type = ar(1) subject = Plot(Trt);

lsmeans Trt / cl;

run;

The continuous variable is in the interaction with a categorical variable (Trt).

What can do to fix this problem and get the estimated value of precipitation?

Please let me know if you know how I can fix this. I need the answer very soon.

topic non estimated interaction between continuous and categorical variables in mixed model in SAS Procedures

non estimated interaction between continuous and categorical variables in mixed model