Force linprog to use simplex method

Hi everyone,

I want linprog to use simplex method, but when I check the output I still see that it uses the default method (Interior point).

This my code:

f=[];
A=[-1 -1 -0.94
1 1 0.94
-1 -1 -0.54
1 1 0.54
-1 -0.664 -0.313
1 0.664 0.313
-1 -0.260 -0.228
1 0.260 0.228
-0.736 -0.176 -0.09
0.736 0.176 0.09
-0.401 -0.050 -0.031
0.401 0.050 0.031];

b=[-0.9
1
-0.6
0.75
-0.4
0.55
-0.2
0.35
-0.12
0.22
-0.05
0.1];
Aeq=[1 1 1];
beq=[1];
options = optimoptions('linprog','Algorithm','active-set')
[x,fval,exitflag,output,lambda]=linprog(f,A,b,Aeq,beq,[],[],[],'options')

And how can I increase the iterations?

Answer 1

[Matt J]

Remove the quotation marks from 'options'. I don't understand why this didn't produce an error message.

options = optimoptions('linprog','Algorithm','simplex')
[x,fval,exitflag,output,lambda]=linprog(f,A,b,Aeq,beq,[],[],[],options)

I also don't understand why the fact that you have f=[] doesn't produce an error message.

And how can I increase the iterations?

Use the 'MaxIter' option.