linprog function - error message

2013 2 28
1 个回答
3 次查看（30 天）

0 个投票

Hi,
I am trying to use the linprog function. To start with, I am simply copying the basic example provided in the function description
f = [-5; -4; -6];
A = [1 -1 1
3 2 4
3 2 0];
b = [20; 42; 30];
lb = zeros(3,1);
[x,fval,exitflag,output,lambda] = linprog(f,A,b,[],[],lb);
However, I keep gettting the following error:
??? Undefined function or method 'linprog' for input arguments of type 'double'.
Any idea why I get this error?
Thxs

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回答（1 个）

Walter Roberson
Walter Roberson 2013-2-28

0 个投票

You do not have the Optimization toolbox installed, or else you do not have it licensed.

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Jean Marc
Jean Marc 2013-2-28
thxs walter.
it is what I read whe I was looking for an answer. However, I can see the linprog.m file in:
C:\Program Files\MatLab\R2010a\toolbox\optim\optim
and I can open it. So I assumed it was installed. Is that wrong?
Thxs again
Jean Marc
Jean Marc 2013-2-28
ah I guess the right to see doesn't give the right to use...
Thxs
Walter Roberson
Walter Roberson 2013-2-28
If you use
which -all linprog
it will likely report "no license available"

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Jean Marc
Jean Marc
2013-2-28

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