MAT is a Matrix file format which is the built-in format for numerical matrix data used by MATLAB®.

This is a binary format, and supports both dense and sparse storage.

The ImportMatrix command can read MAT files created in MATLAB® version 5 and later.

The ExportMatrix command can write to this format.

The general-purpose commands Import and Export also support this format.

$A≔\mathrm{Import}\left(''example/dataLE.mat''\,\mathrm{base}=\mathrm{datadir}\right)$