Find mean of SAS IML vector code example

Example: Find mean of SAS IML vector

proc iml;
x = {-1 -1,
      0  1,
      1  2,
      1  0,
     -1  0 };
 
rowMeans = x[ ,:];
colMeans = x[:, ];
grandMean= x[:];
print x rowMeans, colMeans grandMean;