Undefined function or variable 'lb'.

I have two function.The first 1 is afiqah and the second is MyCost.I wolud to call the data from afiqah to MyCost.

function[ub,lb,o]=afiqah() 

lb=[57 66 22 22 17 8 32 33 36 33 18 41 80 115 105 70 57 42 17 17 12 10 11 20 36 37 20 30 35 15 20 2]
ub=[1170 1303 440 440 330 87 675 650 720 640 350 220 2200 2100 2100 1400 1139 837 405 220 240 269 220 730 710 400 600 661 150 105.5 330 29]
ak=[2759 7929 2053 7929 2053 1647 2180 3766 2525 4680 3938 4608 5261 4608 1300 817 1226 1340 2759 5507 9278 10815 6235 2759 2013 83 1250 725 313 313 13.97 2];
bk=[7.27 7.3 7.33 7.35 7.23 7.39 7.39 7.42 8.3 8.4 8.51 8.4 8.13 8.15 8.17 8.18 8.27 8.78 9.06 8.89 9.14 9.25 9.27 9.33 9.37 4.57 4.91 4.73 4.59 4.59 4.94 4.31];
o=ak.*bk;
end

function [FC] = MyCost(lb,ub,o)
afiqah;
randomArray=lb+(ub-lb).*rand(1,32);
intArray=floor(randomArray);
Pgen=sum(intArray);
if(11000<=Pgen)&&(Pgen<=16000)
    FC=sum(intArray.*o);
end 
end

The error is

MyCost(lb, ub, o)

Undefined function or variable 'lb'.

Answer 1

[madhan ravi]

lb=[57 66 22 22 17 8 32 33 36 33 18 41 80 115 105 70 57 42 17 17 12 10 11 20 36 37 20 30 35 15 20 2];
ub=[1170 1303 440 440 330 87 675 650 720 640 350 220 2200 2100 2100 1400 1139 837 405 220 240 269 220 730 710 400 600 661 150 105.5 330 29];
ak=[2759 7929 2053 7929 2053 1647 2180 3766 2525 4680 3938 4608 5261 4608 1300 817 1226 1340 2759 5507 9278 10815 6235 2759 2013 83 1250 725 313 313 13.97 2];
bk=[7.27 7.3 7.33 7.35 7.23 7.39 7.39 7.42 8.3 8.4 8.51 8.4 8.13 8.15 8.17 8.18 8.27 8.78 9.06 8.89 9.14 9.25 9.27 9.33 9.37 4.57 4.91 4.73 4.59 4.59 4.94 4.31];
o=ak.*bk;
FC = MyCost(lb,ub,o)  %function call
 
 
function [FC] = MyCost(lb,ub,o)    % function definition
randomArray=lb+(ub-lb).*rand(1,32);
intArray=floor(randomArray);
Pgen=sum(intArray);
if(11000<=Pgen)&&(Pgen<=16000) 
    FC=sum(intArray.*o);
end 
end

[Afiqah Ismail]

Both functions are in different tab .I would to call the data from afiqah to MyCost.So that i can get the value of FC in the MyCost.

Answer 2

[Steven Lord]

You call your afiqah function with 0 output arguments inside your MyCost function. That means when the afiqah function finishes executing, it throws away the variables lb, ub, and o you defined inside it since the MyCost function never asked for those variables. Call afiqah with three outputs inside MyCost if you want the contents of the variables defined in it to be available to MyCost.

[Afiqah Ismail]

Can you show example.I am new in matlab.

Both functions are in different tab.When i try to run the MyCost there will be error

MyCost(lb, ub, o)

Undefined function or variable 'lb'.