fuz_conv.m

FISMAT accommodates different arithmetic operators, fuzzification and defuzzification algorithm, imp

function [setA,setB] = fuz_conv(setA,setB,resx)

% [setA,setB] = fuz_conv(setA,setB,resx)
%
% Converts the fuzzy sets ua and ub given in parameter form
% (4*n matrix for generell trapezoid) in a discrete form with
% the resolution resx.
% Both sets get the same abscissa range.
% See also con2dis(). This file is used by some logical operators to use
% them with both fuzzy set forms.
%
% FSTB - Fuzzy Systems Toolbox for MATLAB
% Copyright (c) 1993-1996 by Olaf Wolkenhauer
% Control Systems Centre at UMIST
% Manchester M60 1QD, UK
%
% 25-Feb-1994
 
if (setA(1)==-inf), setA(1)=setA(2); end;
if (setA(4)==inf), setA(4)=setA(3); end;
if (setB(1)==-inf), setB(1)=setB(2); end;
if (setB(4)==inf), setB(4)=setB(3); end;

xmin=min(setA(1),setB(1)); xmax=max(setA(4),setB(4));
alpha=setA(2)-setA(1); beta=setA(4)-setA(3);
setA=modlrset('tr','',[xmin,xmax,setA(2),setA(3),alpha,beta,0,1],resx);
alpha=setB(2)-setB(1); beta=setB(4)-setB(3);
setB=modlrset('tr','',[xmin,xmax,setB(2),setB(3),alpha,beta,0,1],resx);