Matrix representation

Matrix representation is a method used by a computer language to store column-vector matrices of more than one dimension in memory.

An m × n (read as m by n) order matrix is a set of numbers arranged in m rows and n columns.

[3] rows and columns are the different classes of matrices The choice of representation for 4×4 matrices commonly used in 3D graphics affects the implementation of matrix/vector operations in systems with packed SIMD instructions: With row-major matrix order, it is easy to transform vectors using dot product operations, since the coefficients of each component are sequential in memory.

Consequently, this layout may be desirable if a processor supports dot product operations natively.

It is also possible to efficiently use a '3×4' affine transformation matrix without padding or awkward permutes.