Import signal from MATLAB workspace
DSP System Toolbox / Sources
The Signal From Workspace block imports a signal from the MATLAB^{®} workspace into the Simulink^{®} model. The Signal parameter specifies the name of a MATLAB workspace variable containing the signal to import, or any valid MATLAB expression defining a matrix or 3D array.
Unlike the Simulink From Workspace (Simulink) block, the Signal From Workspace block holds the output value constant between successive output frames (that is, no linear interpolation takes place). Also, the initial signal values are always produced immediately at t=0.
Data Types 

Direct Feedthrough 

Multidimensional Signals 

VariableSize Signals 

ZeroCrossing Detection 
