www.gusucode.com > mbcexpr 工具箱 matlab 源码程序 > mbcexpr/cgnumindependentvars.m
function N = cgnumindependentvars(pVar) %CGNUMINDEPENDENTVARS Return the number of independent variables in a list % % N = CGNUMINDEPENDENTVARS(PVAR) returns the total number of independent % variables in the list PVAR. For example, if PVAR contains a pointer to a % formula f = x+K, a variable x and a constant T, the number of % independent variables is only 2 because f and x cannot be simultaneously % set to different values. % Copyright 2000-2008 The MathWorks, Inc. and Ford Global Technologies, Inc. if length(pVar)==1 N = 1; return end objVar = infoarray(pVar); for n = 1:length(pVar) if issymvalue(objVar{n}) % replace with reference to the input variable pVar(n) = getvariable(objVar{n}); end end N = length(unique(pVar));