Not enough input arguments

Hi, I try to create a genetic algorithm model and i try to create a fitness function to calculate fitness of every child. However, Matlab gives a function input error.

Here is the code that I wrote so far,

_
function [ fitness ] = calcfitness( breedingpop, nbreeding, penalty )
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
for i=1:nbreeding
  fitness = (breedingpop(nbreeding).penalty - breedingpop(i).penalty)  / (breedingpop(nbreeding).penalty - breedingpop(1).penaltybreedingpop)

end

i know "penalty" is not the correct way to add as an argument. Does anyone have any idea how I could add penalty as an argument. Thanks

Answer 1

[Azzi Abdelmalek]

function [ fitness ] = calcfitness( breedingpop, nbreeding, penalty )
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
for i=1:nbreeding
fitness = (breedingpop(nbreeding).(penalty) - breedingpop(i).penalty)  / (breedingpop(nbreeding).(penalty) - breedingpop(1).penaltybreedingpop)
end

penalty should be a strindg

[tevzia]

I know input arguments should be string but the penalty is a value that i calculate for every individuals in the model and i try to compare them (fitness) but I cannot figure out how to add argument for this functions.

    % code
function [ fitness ] = calcfitness(breedingpop, nbreeding)
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
for i = 1:nbreeding
    fitness = (breedingpop(nbreeding).penalty - breeding(i).penalty) / (breedingpop(nbreeding).penalty - breedingpop(1).penalty);

    % code

for this variable "breedingpop(nbreeding).penalty" of function, what should i add as an argument. Sorry I am new user of matlab Thanks

[Azzi Abdelmalek]

Did you read my answer?

use

breedingpop(nbreeding).(penalty)  % instead of

breedingpop(nbreeding).penalty

[tevzia]

yes i did but i didnt work as well

[Azzi Abdelmalek]

How did you call your function?

[tevzia]

in the main code

childfitness = calcfitness(breedingpop, nbreeding, penalty )

[Azzi Abdelmalek]

penalty should be a string

childfitness = calcfitness(breedingpop, nbreeding, 'penalty' )