pimf - Π-shaped built-in membership function
Syntax
y = pimf(x,[a b c d])
Description
This spline-based curve is so named because of its Π shape.
The membership function is evaluated at the points determined by the
vector x. The parameters a and d locate
the "feet" of the curve, while b and c locate
its "shoulders." The membership function is a product of smf and zmf membership
functions, and is given by:

Examples
x=0:0.1:10;
y=pimf(x,[1 4 5 10]);
plot(x,y)
xlabel('pimf, P=[1 4 5 10]')

See Also
dsigmf, evalmf, gauss2mf, gaussmf, gbellmf, mf2mf, psigmf, sigmf, smf, trapmf, trimf, zmf
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