[Octave-bug-tracker] [bug #57559] parse error near line 165 of file .... defuzz.m

[Botond Sandor Kirei]

URL:
  <https://savannah.gnu.org/bugs/?57559>

                 Summary: parse error near line 165 of file .... defuzz.m
                 Project: GNU Octave
            Submitted by: botondkirei
            Submitted on: Wed 08 Jan 2020 03:22:47 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Other
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.0
        Operating System: Microsoft Windows

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Details:

After I create a fuzzy controller, and try to plot the control surface a
pasing error appears:

------------------------------copied from the command prompt ----

parse error near line 165 of file
C:\Octave\OCTAVE~1.0\mingw64\share\octave\packages\fuzzy-logic-tool
kit-0.4.5\defuzz.m

  anonymous function bodies must be single expressions

>>>   y_val = @(y_val) if (y_val == max_y) 1 else 0 endif;
                        ^

error: called from
    defuzzify_output_mamdani at line 82 column 15
    evalfis_private at line 57 column 20
    gensurf>generate_plot at line 160 column 10
    gensurf at line 119 column 5

----------------------------------------------------------

The fuzzy inferention system I try to run:

fis = newfis("me_lab");

fis = addvar(fis, "input", "temperatura", [-20,50]);
fis = addmf(fis, "input", 1, "frig", "trapmf", [-Inf -20, 0, 20]);
fis = addmf(fis, "input",1,"cald", "trapmf",[10, 30, 50, Inf]);

fis = addvar(fis, "output","comanda", [0 1]);
fis = addmf(fis, "output",1, "oprit", "trapmf", [-Inf, 0, 0.1, 0.11]);
fis = addmf(fis, "output",1, "pornit", "trapmf", [0.89, 0.9, 1, Inf]);
fis = addmf(fis, "output",1, "nu_conteaza", "trapmf", [0.09 0.11 0.89 0.91]);

rules = [1 2 1 2
        2 1 1 2];
fis = addrule(fis,rules);

plotmf(fis, 'input',1);
plotmf(fis, 'output',1);
showrule(fis)

gensurf(fis)





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