Query output/input/array dimensions of input–output model and number of frequencies of FRD model
size(sys)
d = size(sys)
Ny = size(sys,1)
Nu = size(sys,2)
Sk = size(sys,2+k)
Nf = size(sys,'frequency')
When invoked without output arguments, size(sys) returns
a description of type and the input-output dimensions of sys.
If sys is a model array, the array size is also
described. For identified models, the number of free parameters is
also displayed. The lengths of the array dimensions are also included
in the response to size when sys is a model array.
d = size(sys) returns:
The row vector d = [Ny Nu] for
a single dynamic model sys with Ny outputs
and Nu inputs
The row vector d = [Ny Nu S1 S2 ... Sp] for
an S1-by-S2-by-...-by-Sp array
of dynamic models with Ny outputs and Nu inputs
Ny = size(sys,1) returns the number of
outputs of sys.
Nu = size(sys,2) returns the number of
inputs of sys.
Sk = size(sys,2+k) returns the length of
the k-th array dimension when sys is
a model array.
Nf = size(sys,'frequency') returns the
number of frequencies when sys is a frequency response
data model. This is the same as the length of sys.frequency.