Linprog error - The number of rows in A must be the same as the number of elements of b.

Hi , I am trying code a linprog optimisation

my code is

Aeq = [PV_power_output(:,:,K) WT_power_output(:,:,M) Bat_power_output]; % supply meets demand every hour

 beq = [Hourly_power_demand(j,i)];

 A = [PV_emissions_reduction(:,:,K) WT_emissions_reduction(:,:,M)    Bat_emissions_reduction];

 b = [0.8.*Current_emissions]; % Emissions reduction 20% 

x = linprog(f,A,b,Aeq,beq)

I get an error saying "The number of rows in A must be the same as the number of elements of b." Im not sure what detail Im missing since A has one row and b has one element as far I can see!

Thanks

[Walter Roberson]

PV_emissions_reduction(:,:,K) would normally be many rows.

Answer 1

[Alan Weiss]

After you enter your code, but before you call the last line

 x = linprog(f,A,b,Aeq,beq)

I suggeset that you enter size(A) at the MATLAB command line to see how many rows MATLAB thinks A has.

Alan Weiss

MATLAB mathematical toolbox documentation