What Is Fuzzy Logic?

evalfis
Purpose
Syntax
Description
Perform fuzzy inference calculations
output= evalfis(input,fismat)
output= evalfis(input,fismat, numPts)
[output, IRR, ORR, ARR]= evalfis(input,fismat)
[output, IRR, ORR, ARR]= evalfis(input,fismat,
numPts)
evalfis has the following arguments:
• input: anumberoramatrixspecifyinginputvalues.Ifinput is an
M-by-N matrix, where N is number of input variables, then evalfis
takes each row of input as an input vector and returns the M-by-L
matrix to the variable, output, where each row is an output vector
and L is the number of output variables.
• fismat: a FIS structure to be evaluated.
• numPts: an optional argument that represents the number of sample
points on which to evaluate the membership functions over the input
or output range. If this argument is not used, the default value of
101 points is used.
The range labels for evalfis are as follows:
• output: the output matrix of size M-by-L, where M represents the
number of input values specified previously, and L is the number
of output variables for the FIS.
The optional range variables for evalfis are only calculated when the
input argument is a row vector, (only one set of inputs is applied).
These optional range variables are
• IRR: the result of evaluating the input values through the
membership functions. This matrix is of the size numRules-by-N,
where numRules is the number of rules, and N is the number of
input variables.
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