Insert Row into a Matrix
Insert a new row into a matrix.
insertRow( m, r, v = NA, rName = "" )
 m  | 
 matrix.  | 
 r  | 
 row number where the new row should be inserted.  | 
 v  | 
 optional values for the new row.  | 
 rName  | 
 optional character string: the name of the new row.  | 
a matrix with one more row than the provided matrix m.
Arne Henningsen
m <- matrix( 1:4, 2 ) insertRow( m, 2, 5:6 )
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