plotset.m

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%
%  Syntax:  plotset(Set,strLineType)
%
%  Inputs:  Set is a 1x5 vector for picurves, a single value for singletons.
%           strLineType is a legal Matlab linetype argument, e.g. 'r-'.
%
%  Result:  The Set memberships are plotted against its universe in the 
%           current plot area.  The universe axis limits are set to [-100;100]
%           for input sets and to [-200;200] for output sets.
%
%           Petur Snaeland,  30.04.1995.
%
function plotset(Set,strLineType)

if length(Set)==1,
   %
   %  The fuzzy set is a singleton.  Then use a [-200;200] universe and
   %  and let the singleton be 1, but all other elements 0.
   %
   MembershipFcn = zeros(1,401);
   MembershipFcn(201+Set) = 1;
   axis([-200 200 0 1]);
   plot(-200:200,MembershipFcn,strLineType);
else
   %
   %  The fuzzy set is a pi-curve.  Then use a [-100;100] universe and
   %  compute the membership values for each element in the universe.
   %
   MembershipFcn = picurve(Set(1),Set(2),Set(3),Set(4),-100:100,Set(5));
   axis([-100 100 0 1]);
   plot(-100:100,MembershipFcn,strLineType);
end;