MODELMATRIX Procedure

The variable in the FREQ statement identifies a numeric variable in the data set that contains the frequency of occurrence of each observation. PROC MODELMATRIX treats each observation as if it appears f times, where f is the value of the variable for the observation. If f is not an integer, it is truncated to an integer. If f is less than 1 or missing, all the columns of the design matrix for that observation are filled in with missing values. When the FREQ statement is omitted, each observation is assigned a frequency of 1.