How to fix this error in gadecode(Line No 1

clear all

ff='testfunction';

npar=2;

maxit=100;

mincost=-9999999;

popsize=16;

mutrate=.15;

selection=0.5;

nbits=8;

Nt=nbits*npar;

keep=floor(selection*popsize);

iga=0;

pop=round(rand(popsize,Nt));

par=gadecode(pop,0,10,nbits);

cost=feval(ff,par);

[cost,ind]=sort(cost);

par=par(ind,:);

pop=pop(ind,:);

minc(1)=min(cost);

meanc(1)=mean(cost);

while iga<maxit

iga=iga+1;

M=ceil((popsize-keep)/2);

prob=flipud([1:keep]'/sum([1:keep]));

odds=[0 cumsum(prob(1:keep))'];

distribution function

pick1=rand(1,M);

pick2=rand(1,M);

ic=1;

while ic<=M

for id=2:keep+1

if pick1(ic)<=odds(id) & pick1(ic)>odds(id-1)

ma(ic)=id-1;

end

if pick2(ic)<=odds(id) & pick2(ic)>odds(id-1)

pa(ic)=id-1;

end

end % id

ic=ic+1;

end

ix=1:2:keep;

xp=ceil(rand(1,M)*(Nt-1));

pop(keep+ix,:)=[pop(ma,1:xp) pop(pa,xp+1:Nt)];

pop(keep+ix+1,:)=[pop(pa,1:xp) pop(ma,xp+1:Nt)];

nmut=ceil((popsize-1)*Nt*mutrate);

mrow=ceil(rand(1,nmut)*(popsize-1))+1;

mcol=ceil(rand(1,nmut)*Nt);

for ii=1:nmut

pop(mrow(ii),mcol(ii))=abs(pop(mrow(ii),mcol(ii))-1);

end

par(2:popsize,:)=gadecode(pop(2:popsize,:),0,10,nbits);

cost(2:popsize)=feval(ff,par(2:popsize,:));

[cost,ind]=sort(cost);

par=par(ind,:); pop=pop(ind,:);

minc(iga+1)=min(cost);

meanc(iga+1)=mean(cost);

if iga>maxit | cost(1)<mincost

break

end

[iga cost(1)]

end

day=clock;

disp(datestr(datenum(day(1),day(2),day(3),day(4),day(5), day(6)),0))

disp(['optimized function is ' ff])

format short g

disp(['popsize=' num2str(popsize) ' mutrate = ' num2str(mutrate) ' # par = ' num2str(npar)])

disp(['#generations=' num2str(iga) ' best cost=' num2str(cost(1))])

disp(['best solution'])

disp([num2str(par(1,:))])

disp('binary genetic algorithm')

disp(['each parameter represented by ' num2str(nbits) ' bits'])

figure(24)

iters=0:length(minc)-1;

plot(iters,minc,iters,meanc,'–');

xlabel('generation');ylabel('cost');

text(0,minc(1),'best');

text(1,minc(2),'population average')

Im getting this error at the end. How do I fix it?

[Star Strider]

You need to download the function to a directory on your MATLAB user search path.

It would not be advisable for you to install it in the MATLAB bin directory!

Answer 1

[Chisom Mirian]

gadecode is not a Matlab built in function.

This might help:

https://github.com/fit087/Genetico/blob/master/gadecode.m