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|
## Copyright (C) 2011-2025 L. Markowsky <lmarkowsky@gmail.com>
##
## This file is part of the fuzzy-logic-toolkit.
##
## The fuzzy-logic-toolkit is free software; you can redistribute it
## and/or modify it under the terms of the GNU General Public License
## as published by the Free Software Foundation; either version 3 of
## the License, or (at your option) any later version.
##
## The fuzzy-logic-toolkit is distributed in the hope that it will be
## useful, but WITHOUT ANY WARRANTY; without even the implied warranty
## of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with the fuzzy-logic-toolkit; see the file COPYING. If not,
## see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{retval} =} getfis (@var{fis})
## @deftypefnx {Function File} {@var{retval} =} getfis (@var{fis}, @var{property})
## @deftypefnx {Function File} {@var{retval} =} getfis (@var{fis}, @var{in_or_out}, @var{var_index})
## @deftypefnx {Function File} {@var{retval} =} getfis (@var{fis}, @var{in_or_out}, @var{var_index}, @var{var_property})
## @deftypefnx {Function File} {@var{retval} =} getfis (@var{fis}, @var{in_or_out}, @var{var_index}, @var{mf}, @var{mf_index})
## @deftypefnx {Function File} {@var{retval} =} getfis (@var{fis}, @var{in_or_out}, @var{var_index}, @var{mf}, @var{mf_index}, @var{mf_property})
##
## Return or print the property (field) values of an FIS structure
## specified by the arguments.
##
## There are six forms of getfis:
##
## @multitable @columnfractions .20 .70
## @headitem Number of Arguments @tab Action Taken
## @item 1
## @tab Print (some) properties of an FIS structure on standard output.
## Return the empty set.
## @item 2
## @tab Return a specified property of the FIS structure. The properties
## that may be specified are: name, type, version, numinputs,
## numoutputs, numinputmfs, numoutputmfs, numrules, andmethod,
## ormethod, impmethod, addmethod, defuzzmethod, inlabels, outlabels,
## inrange, outrange, inmfs, outmfs, inmflabels, outmflabels,
## inmftypes, outmftypes, inmfparams, outmfparams, and rulelist.
## @item 3
## @tab Print the properties of a specified input or output variable
## of the FIS structure. Return the empty set.
## @item 4
## @tab Return a specified property of an input or output variable.
## The properties that may be specified are: name, range, nummfs,
## and mflabels.
## @item 5
## @tab Print the properties of a specified membership function of the
## FIS structure. Return the empty set.
## @item 6
## @tab Return a specified property of a membership function. The
## properties that may be specified are: name, type, and params.
## @end multitable
## @sp 1
## The types/values of the arguments are expected to be:
##
## @multitable @columnfractions .20 .70
## @headitem Argument @tab Expected Type or Value
## @item @var{fis}
## @tab an FIS structure
## @item @var{property}
## @tab a string; one of: 'name', 'type', 'version', 'numinputs',
## 'numoutputs', 'numinputmfs', 'numoutputmfs',
## 'numrules', 'andmethod', 'ormethod', 'impmethod',
## 'addmethod', 'defuzzmethod' 'inlabels', 'outlabels',
## 'inrange', 'outrange', 'inmfs', 'outmfs',
## 'inmflabels', 'outmflabels', 'inmftypes',
## 'outmftypes', 'inmfparams', 'outmfparams', and
## 'rulelist' (case-insensitive)
## @item @var{in_or_out}
## @tab either 'input' or 'output' (case-insensitive)
## @item @var{var_index}
## @tab a valid integer index of an input or output FIS variable
## @item @var{var_property}
## @tab a string; one of: 'name', 'range', 'nummfs', and 'mflabels'
## @item @var{mf}
## @tab the string 'mf'
## @item @var{mf_index}
## @tab a valid integer index of a membership function
## @item @var{mf_property}
## @tab a string; one of 'name', 'type', or 'params'
## @end multitable
## @sp 1
## Note that all of the strings representing properties above are case
## insensitive.
##
## @seealso{setfis, showfis}
## @end deftypefn
## Author: L. Markowsky
## Keywords: fuzzy-logic-toolkit fuzzy inference system fis
## Directory: fuzzy-logic-toolkit/inst/
## Filename: getfis.m
## Last-Modified: 13 Jun 2024
##----------------------------------------------------------------------
function retval = getfis (fis, arg2 = 'dummy', arg3 = 'dummy', ...
arg4 = 'dummy', arg5 = 'dummy', ...
arg6 = 'dummy')
switch (nargin)
case 1 retval = getfis_one_arg (fis);
case 2 retval = getfis_two_args (fis, arg2);
case 3 retval = getfis_three_args (fis, arg2, arg3);
case 4 retval = getfis_four_args (fis, arg2, arg3, arg4);
case 5 retval = getfis_five_args (fis, arg2, arg3, arg4, arg5);
case 6 retval = getfis_six_args (fis, arg2, arg3, arg4, arg5, ...
arg6);
otherwise
error ("getfis requires 1-6 arguments\n");
endswitch
endfunction
##----------------------------------------------------------------------
## Function: getfis_one_arg
## Purpose: Handle calls to getfis that have 1 argument. See the
## comment at the top of this file for more complete info.
##----------------------------------------------------------------------
function retval = getfis_one_arg (fis)
## If the argument does not have the correct type, print an error
## message and halt.
if (!is_fis (fis))
error ("the first argument to getfis must be an FIS structure\n");
endif
## Print (some) properties of the FIS structure. Return the empty set.
printf ("Name = %s\n", fis.name);
printf ("Type = %s\n", fis.type);
printf ("NumInputs = %d\n", columns(fis.input));
printf ("InLabels = \n");
for i = 1 : columns (fis.input)
printf ("\t%s\n", fis.input(i).name);
endfor
printf ("NumOutputs = %d\n", columns(fis.output));
printf ("OutLabels = \n");
for i = 1 : columns (fis.output)
printf ("\t%s\n", fis.output(i).name);
endfor
printf ("NumRules = %d\n", columns(fis.rule));
printf ("AndMethod = %s\n", fis.andMethod);
printf ("OrMethod = %s\n", fis.orMethod);
printf ("ImpMethod = %s\n", fis.impMethod);
printf ("AggMethod = %s\n", fis.aggMethod);
printf ("DefuzzMethod = %s\n", fis.defuzzMethod);
retval = [];
endfunction
##----------------------------------------------------------------------
## Function: getfis_two_args
## Purpose: Handle calls to getfis that have 2 arguments. See the
## comment at the top of this file for more complete info.
##----------------------------------------------------------------------
function retval = getfis_two_args (fis, arg2)
## If not all of the arguments have the correct types, print an error
## message and halt.
if (!is_fis (fis))
error ("the first argument to getfis must be an FIS structure\n");
elseif (!(is_string (arg2) && ismember (tolower (arg2), {'name', ...
'type', 'version', 'numinputs', 'numoutputs', ...
'numinputmfs', 'numoutputmfs', 'numrules', 'andmethod', ...
'ormethod', 'impmethod', 'aggmethod', 'defuzzmethod', ...
'inlabels', 'outlabels', 'inrange', 'outrange', 'inmfs', ...
'outmfs', 'inmflabels', 'outmflabels', 'inmftypes', ...
'outmftypes', 'inmfparams', 'outmfparams', 'rulelist'})))
error ("unknown second argument to getfis\n");
endif
## Return the specified property of the FIS structure.
switch (tolower (arg2))
case 'name' retval = fis.name;
case 'type' retval = fis.type;
case 'version' retval = fis.version;
case 'numinputs' retval = columns (fis.input);
case 'numoutputs' retval = columns (fis.output);
case 'numrules' retval = columns(fis.rule);
case 'andmethod' retval = fis.andMethod;
case 'ormethod' retval = fis.orMethod;
case 'impmethod' retval = fis.impMethod;
case 'aggmethod' retval = fis.aggMethod;
case 'defuzzmethod' retval = fis.defuzzMethod;
case 'numinputmfs'
retval = [];
for i = 1 : columns (fis.input)
if (i == 1)
retval = columns(fis.input(i).mf);
else
retval = [retval columns(fis.input(i).mf)];
endif
endfor
case 'numoutputmfs'
retval = [];
for i = 1 : columns (fis.output)
if (i == 1)
retval = columns(fis.output(i).mf);
else
retval = [retval columns(fis.output(i).mf)];
endif
endfor
case 'inlabels'
retval = [];
for i = 1 : columns (fis.input)
if (i == 1)
retval = fis.input(i).name;
else
retval = [retval; fis.input(i).name];
endif
endfor
case 'outlabels'
retval = [];
for i = 1 : columns (fis.output)
if (i == 1)
retval = fis.output(i).name;
else
retval = [retval; fis.output(i).name];
endif
endfor
case 'inrange'
retval = [];
for i = 1 : columns (fis.input)
if (i == 1)
retval = fis.input(i).range;
else
retval = [retval; fis.input(i).range];
endif
endfor
case 'outrange'
retval = [];
for i = 1 : columns (fis.output)
if (i == 1)
retval = fis.output(i).range;
else
retval = [retval; fis.output(i).range];
endif
endfor
case 'inmfs'
retval = [];
for i = 1 : columns (fis.input)
if (i == 1)
retval = columns(fis.input(i).mf);
else
retval = [retval columns(fis.input(i).mf)];
endif
endfor
case 'outmfs'
retval = [];
for i = 1 : columns (fis.output)
if (i == 1)
retval = columns(fis.output(i).mf);
else
retval = [retval columns(fis.output(i).mf)];
endif
endfor
case 'inmflabels'
retval = [];
for i = 1 : columns (fis.input)
for j = 1 : columns (fis.input(i).mf)
if (i == 1 && y == 1)
retval = fis.input(i).mf(j).name;
else
retval = [retval; fis.input(i).mf(j).name];
endif
endfor
endfor
case 'outmflabels'
retval = [];
for i = 1 : columns (fis.output)
for j = 1 : columns (fis.output(i).mf)
if (i == 1 && y == 1)
retval = fis.output(i).mf(j).name;
else
retval = [retval; fis.output(i).mf(j).name];
endif
endfor
endfor
case 'inmftypes'
retval = [];
for i = 1 : columns (fis.input)
for j = 1 : columns (fis.input(i).mf)
if (i == 1 && y == 1)
retval = fis.input(i).mf(j).type;
else
retval = [retval; fis.input(i).mf(j).type];
endif
endfor
endfor
case 'outmftypes'
retval = [];
for i = 1 : columns (fis.output)
for j = 1 : columns (fis.output(i).mf)
if (i == 1 && y == 1)
retval = fis.output(i).mf(j).type;
else
retval = [retval; fis.output(i).mf(j).type];
endif
endfor
endfor
case 'inmfparams'
## Determine the dimensions of the matrix to return.
max_len = 0;
num_inputs = columns (fis.input);
num_mfs = 0;
for i = 1 : num_inputs
num_var_i_mfs = columns (fis.input(i).mf);
num_mfs += num_var_i_mfs;
for j = 1 : num_var_i_mfs
max_len = max (max_len, length (fis.input(i).mf(j).params));
endfor
endfor
## Assemble the matrix of params to return. Pad with zeros.
retval = zeros (num_mfs, max_len);
for i = 1 : num_inputs
for j = 1 : columns (fis.input(i).mf)
next_row_index = (i - 1) * max_len + j;
next_row = fis.input(i).mf(j).params;
retval(next_row_index, 1 : length (next_row)) = next_row;
endfor
endfor
case 'outmfparams'
## Determine the dimensions of the matrix to return.
max_len = 0;
num_outputs = columns (fis.output);
num_mfs = 0;
for i = 1 : num_outputs
num_var_i_mfs = columns (fis.output(i).mf);
num_mfs += num_var_i_mfs;
for j = 1 : num_var_i_mfs
max_len = max (max_len, length (fis.output(i).mf(j).params));
endfor
endfor
## Assemble the matrix of params to return. Pad with zeros.
retval = zeros (num_mfs, max_len);
for i = 1 : num_outputs
for j = 1 : columns (fis.output(i).mf)
next_row_index = (i - 1) * max_len + j;
next_row = fis.output(i).mf(j).params;
retval(next_row_index, 1 : length (next_row)) = next_row;
endfor
endfor
case 'rulelist'
## Determine the dimensions of the matrix to return.
num_inputs = columns (fis.input);
num_outputs = columns (fis.output);
num_rules = columns (fis.rule);
## Assemble the matrix of rules to return.
retval = zeros (num_rules, num_inputs + num_outputs + 2);
for i = 1 : num_rules
retval(i, 1:num_inputs) = fis.rule(i).antecedent;
retval(i, num_inputs+1:num_inputs+num_outputs) = ...
fis.rule(i).consequent;
retval(i, num_inputs+num_outputs+1) = fis.rule(i).weight;
retval(i, num_inputs+num_outputs+2) = fis.rule(i).connection;
endfor
otherwise
error ("internal error in getfis_two_args");
endswitch
endfunction
##----------------------------------------------------------------------
## Function: getfis_three_args
## Purpose: Handle calls to getfis that have 3 arguments. See the
## comment at the top of this file for more complete info.
##----------------------------------------------------------------------
function retval = getfis_three_args (fis, arg2, arg3)
## If not all of the arguments have the correct types, print an error
## message and halt.
if (!is_fis (fis))
error ("the first argument to getfis must be an FIS structure\n");
elseif (!(is_string (arg2) && ...
ismember (tolower (arg2), {'input','output'})))
error ("incorrect second argument to getfis\n");
elseif (!is_var_index (fis, arg2, arg3))
error ("incorrect third argument to getfis\n");
endif
## Print the properties of a specified input or output variable of the
## FIS structure. Return the empty set.
var_str = ["fis." tolower(arg2) "(" num2str(arg3) ")"];
var_mf_str = [var_str ".mf"];
num_mfs = columns (eval (var_mf_str));
printf ("Name = %s\n", eval ([var_str ".name"]));
printf ("NumMFs = %d\n", num_mfs);
printf ("MFLabels = \n");
for i = 1 : num_mfs
printf ("\t%s\n", eval ([var_mf_str "(" num2str(i) ").name"]));
endfor
printf ("Range = %s\n", mat2str (eval ([var_str ".range"])));
retval = [];
endfunction
##----------------------------------------------------------------------
## Function: getfis_four_args
## Purpose: Handle calls to getfis that have 4 arguments. See the
## comment at the top of this file for more complete info.
##----------------------------------------------------------------------
function retval = getfis_four_args (fis, arg2, arg3, arg4)
## If not all of the arguments have the correct types, print an error
## message and halt.
if (!is_fis (fis))
error ("the first argument to getfis must be an FIS structure\n");
elseif (!(is_string (arg2) && ...
ismember (tolower (arg2), {'input','output'})))
error ("incorrect second argument to getfis\n");
elseif (!is_var_index (fis, arg2, arg3))
error ("incorrect third argument to getfis\n");
elseif (!(is_string (arg4) && ismember (tolower (arg4), ...
{'name', 'range', 'nummfs', 'mflabels'})))
error ("incorrect fourth argument to getfis\n");
endif
## Return the specified property of the FIS input or output variable.
arg2 = tolower (arg2);
arg4 = tolower (arg4);
if (ismember (arg4, {'name', 'range'}))
retval = eval (["fis." arg2 "(" num2str(arg3) ")." arg4]);
elseif (strcmp (arg4, 'nummfs'))
retval = columns (eval (["fis." arg2 "(" num2str(arg3) ").mf"]));
elseif (strcmp (arg2, 'input') && strcmp (arg4, 'mflabels'))
retval = [];
for i = 1 : columns (fis.input)
for j = 1 : columns (fis.input(i).mf)
retval = [retval; fis.input(i).mf(j).name];
endfor
endfor
elseif (strcmp (arg2, 'output') && strcmp (arg4, 'mflabels'))
retval = [];
for i = 1 : columns (fis.output)
for j = 1 : columns (fis.output(i).mf)
retval = [retval; fis.output(i).mf(j).name];
endfor
endfor
endif
endfunction
##----------------------------------------------------------------------
## Function: getfis_five_args
## Purpose: Handle calls to getfis that have 5 arguments. See the
## comment at the top of this file for more complete info.
##----------------------------------------------------------------------
function retval = getfis_five_args (fis, arg2, arg3, arg4, arg5)
## If not all of the arguments have the correct types, print an error
## message and halt.
if (!is_fis (fis))
error ("the first argument to getfis must be an FIS structure\n");
elseif (!(is_string(arg2) && ...
ismember(tolower(arg2), {'input','output'})))
error ("incorrect second argument to getfis\n");
elseif (!is_var_index(fis, arg2, arg3))
error ("incorrect third argument to getfis\n");
elseif (!(is_string(arg4) && isequal(tolower(arg4), 'mf')))
error ("incorrect fourth argument to getfis\n");
elseif (!is_mf_index(fis, arg2, arg3, arg5))
error ("incorrect fifth argument to getfis\n");
endif
## Print the properties of a specified membership function of the
## FIS structure. Return the empty set.
var_mf_str = ["fis." tolower(arg2) "(" num2str(arg3) ").mf(" ...
num2str(arg5) ")"];
printf ("Name = %s\n", eval ([var_mf_str ".name"]));
printf ("Type = %s\n", eval ([var_mf_str ".type"]));
printf ("Params = ");
disp (eval ([var_mf_str ".params"]));
retval = [];
endfunction
##----------------------------------------------------------------------
## Function: getfis_six_args
## Purpose: Handle calls to getfis that have 6 arguments. See the
## comment at the top of this file for more complete info.
##----------------------------------------------------------------------
function retval = getfis_six_args (fis, arg2, arg3, arg4, arg5, arg6)
## If not all of the arguments have the correct types, print an error
## message and halt.
if (!is_fis (fis))
error ("the first argument to getfis must be an FIS structure\n");
elseif (!(is_string (arg2) && ...
ismember (tolower (arg2), {'input','output'})))
error ("incorrect second argument to getfis\n");
elseif (!is_var_index (fis, arg2, arg3))
error ("incorrect third argument to getfis\n");
elseif (!(is_string (arg4) && isequal (tolower (arg4), 'mf')))
error ("incorrect fourth argument to getfis\n");
elseif (!is_mf_index (fis, arg2, arg3, arg5))
error ("incorrect fifth argument to getfis\n");
elseif (!(is_string (arg6) && ismember (tolower (arg6), ...
{'name', 'type', 'params'})))
error ("incorrect sixth argument to getfis\n");
endif
## Return the specified membership function property.
retval = eval (["fis." tolower(arg2) "(" num2str(arg3) ").mf(" ...
num2str(arg5) ")." tolower(arg6)]);
endfunction
%!shared fis
%! fis = readfis ('mamdani_tip_calculator.fis');
## Test input validation
%!error <getfis requires 1-6 arguments>
%! getfis()
%!error <getfis: function called with too many inputs>
%! getfis(1, 2, 3, 4, 5, 6, 7)
%!error <the first argument to getfis must be an FIS structure>
%! getfis(1, 2, 3, 4, 5, 6)
%!error <incorrect second argument to getfis>
%! getfis(fis, 2, 3, 4, 5, 6)
%!error <incorrect third argument to getfis>
%! getfis(fis, 'input', 3, 4, 5, 6)
%!error <incorrect fourth argument to getfis>
%! getfis(fis, 'input', 1, 4, 5, 6)
%!error <incorrect fifth argument to getfis>
%! getfis(fis, 'input', 1, 'mf', 5, 6)
%!error <incorrect sixth argument to getfis>
%! getfis(fis, 'input', 1, 'mf', 1, 6)
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