Crisp sets can be created using linear saturation functions such as linzmf() and linsmf(). Before these two functions were introduced in the R2022a release, the trapezoidal function, trapzmf(), was commonly used.
fis = mamfis;
% Fuzzy Input 1
fis = addInput(fis, [-1 +1], 'Name', 'Input');
fis = addMF(fis, 'Input', 'linzmf', [0 0], 'Name', 'Support');
fis = addMF(fis, 'Input', 'linsmf', [0 0], 'Name', 'Core');
figure(1)
plotmf(fis, 'input', 1, 2001), grid on, ylim([-0.2, 1.2])
title('Crisp sets for Input variable')
