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Working with Matrices

More about Missing Values

Missing values in matrices are discussed in Chapter 3, Understanding the SAS/IML Language. You should carefully read that chapter and Chapter 22, Further Notes, so that you are aware of the way SAS/IML software handles missing values. The following examples show how missing values are handled for elementwise operations and for subscript reduction operators.

Consider the following two matrices and :

     

The following operations handle missing values in matrices:

     
     
     
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