# MATLAB: How can I solve the problem in following error…???

MATLAB Compiler

??? Input argument "graph" is undefined.
Error in ==> plotrand at 7 m = size(graph,2);

function[bestrute,setuptimes,machines] = ACO(graph,machine,nodes,Q,a,b,p,t,mactime,jobtime)%%(Ant System) 10042011%----------------------------------% inisialisasi parameter algoritma%----------------------------------m = size(graph,2);n = size(graph,1);minimumspan=0;% membuat matriks pheromonepher = pheromone(graph,t);simpulcount=0;for i=1:n    for j=1:m        if(graph(i,j)~=0)            v(i,j)=1/graph(i,j);            simpulcount=simpulcount+1;        end    endend%penyusunan rute kunjungan semutstate=1;while(state==1)rute = zeros(m,simpulcount+2); %matriks rutefor i= 1: n   node=nodes(i,1); %simpul pertama   rute(i,2)=nodes(i,1); %masukkan simpul pertama pada matriks rute   stat=1;   temps =pher;   temps(:,(nodes(i,1)+1))=0;   while(stat<simpulcount)       temp = temps(node+1,:);       for j=2:size(temp,2)           column=mod((j-1),size(v,2));           if(column==0)               column=3;           end           if(column>1) %filter berdasarkan urutan operasi               allowed=0;               for k=1:size(rute,2)                   if(nodes(ceil((j-1)/size(v,2)),column-1)==rute(i,k))                        allowed=temp(1,j);                   end               end               temp(1,j)=allowed;           end           temp(1,j)= temp(1,j)*v(ceil((j-1)/size(v,2)),column);       end       sigma = sum(temp);       prob = temp ./ sigma;       nodemax = max(prob);       for j=2:size(prob,2)           if(prob(1,j)==nodemax)               node=j-1; %simpul terpilih dengan nilai probabilitas terbesar               stat=stat+1;               rute(i,stat+1)=node; %simpan simpul terpilih               temps(:,j)=0;           end       end   end     %temukan rute dengan minimum span setelah pertukaran simpul.     bestrutes(i,:)=nodeexchange(graph,rute(i,:),nodes,machine,mactime,jobtime);  end     if(min(bestrutes(:,(size(bestrutes,2))))== minimumspan)          state=0;     end     minimumspan=min(bestrutes(:,(size(bestrutes,2))));     for j=1:size(bestrutes,1)         if(bestrutes(j,(size(bestrutes,2)))==minimumspan)             bestrute=bestrutes(j,:);         end     end     deltapher=Q/minimumspan;     %update pheromone     for j=1:size(pher,1)         for k=1:size(pher,2)             if(pher(j,k)~=0)                 pher(j,k)= (1-p)*t+deltapher;             end         end     end  end% menghitung setup time setiap operasisetuptimes =setuptime(graph,bestrute,machine,mactime,jobtime);%mengeset matriks mesin dalam satu barismachines =setmachine(machine,bestrute);
??? Input argument "graph" is undefined.Error in ==> portland at 6m = size(graph,2);