User`s guide
Identity Matrix
5-231
Dialog Box
Inherit input port attributes from input port
Enables the input port when selected. The output inherits its dimensions 
and sample period from the input.
Matrix size
The number of rows and columns in the output matrix: a scalar M for a 
square M-by-M output, or a vector 
[M N] for an M-by-N output. This 
parameter is disabled when 
Inherit input port attributes from input 
port 
is selected.
Sample time
The discrete sample period of the output. This parameter is disabled when 
Inherit input port attributes from input port is selected.
Supported 
Data Types
See Also
See “Creating Signals Using Constant Blocks” on page 3-33 for related 
information.
Double-precision floating point 
Constant Diagonal Matrix DSP Blockset
DSP Constant DSP Blockset
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