Had the same problem where the imputed data indicator on my dataset had another variable name. All I had to was to change that variable name to '_Imputation_' and run Proc mianalyze again. That fixes it.  ... View more

After you STORE the model into an item store, you can use the EFFECTPLOT statement in PROC PLM to visualize the predicted values for the model. (For procedures that do not support the STORE statement, you can create an effect plot manually.)   You can also use the OUTPREDM= option on the MODEL statement to output the predicted means yourself.   ... View more

Perhaps the coalinfo4 variable contains many more than three categories? Use PROC FREQ to find out.   Since you didn't post code, try using a standard SAS example data set in the SASHELP libref. For example, here is your syntax applied to SASHELP.cars. Which plot are you asking about?   proc glm data=sashelp.cars plots=diagnostics; class origin; model mpg_city = origin; means origin / hovtest; run;   ... View more