Scripting Guide - SAS

146 Data Structures Chapter 7
Matrices
Transpose
1 0 1 4 4 4]
The VConcat() function stacks two matrices on top of each other to form a larger matrix. The number of
columns must agree. A vertical-bar-slash ( |/ ) is the infix operator, equivalent for vertical concatenation.
Identity(2) |/ J(3,2,1); // or VConcat(Identity(2),J(3,2,1));
[1 0,
0 1,
1 1,
1 1,
1 1]
Both Concat() and VConcat() support concatenating to empty matrices, scalars, and lists.
a=[];
a || [1]; // yields [1]
a || {2}; // yields [2]
a || [3 4 5]; // yields [3 4 5]
There are two in place concatenation operators: ||= and |/= . They are equivalent to the Concat
To()and V Concat To() functions, respectively.
• a||=b is equivalent to a=a||b
• a|/=b is equivalent to a=a|/b
The Transpose() function transposes the rows and columns of a matrix. A back-quote ( ` ) is the postfix
operator, equivalent to Transpose(). In matrix notation, Transpose() is expressed as the common
prime or superscript-T notation ( A′ or A T ).
A=[1 2 3, 4 5 6, 7 8 9, 10 11 12];
A`;
[1 4 7 10,
2 5 8 11,
3 6 9 12]
Transpose([1 2,3 4]);
[1 3,
2 4]
Matrices and Data Tables
You can move information between a matrix and a JMP data table. You can use matrix algebra to perform
calculations on numbers that are stored in JMP data tables, and you can save the results back to JMP data
tables.
Move Data into a Matrix from a Data Table
These sections describe how to move data from a data table into a matrix.