VSIZE is the jVarfun module of jLab.

 VSIZE  Returns the sizes of multiple arguments.
 
    VSIZE(X1,X2,... XN) returns the sizes of the input variables.
    These are organized in a matrix of size M x N where M is the number
    of input variables and M is the maximum number of dimensions.
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    This is part of JLAB --- type 'help jlab' for more information
    (C) 2001--2018 J.M. Lilly --- type 'help jlab_license' for details