Replace the 'set' function

[Rajat]

First of all, I would like to admit that I am very new to this 'YALMIP' community. Actually, I was going through one's MATLAB code. While understanding his code, I came to know about this platform.

In that MATLAB code, I noticed that he used 'set' function, but when I am trying to run that code by using newest 'YALMIP' package, it is giving me the following error-

"Error using constraint/set (line 6)

Obsolete command."

I tried to fixed it by omitting it from the code, but it is still not working. Few snaps how the code looks like-

1. c = set(A(:)>=0) + set(B(:)>=0);

2. c = c + set (C(:)==0);

3. c = c + set([eye(2), X; X', [Y(ii), Y(ij); Y(ij), Y(jj)]]>=0);

4. c = c + set(S==0, 'Equality');

My try was-

1. c = (A(:)>=0) + (B(:)>=0);

2. c = c + (C(:)==0);

3. c = c + ([eye(2), X; X', [Y(ii), Y(ij); Y(ij), Y(jj)]]>=0);

4. c = c + (S==0);

Please help me to fix the problem. Thanks in advance.

[Johan Löfberg]

That looks correct so I don't see what the question is

http://users.isy.liu.se/johanl/yalmip/pmwiki.php?n=Tutorials.Basics

[Rajat]

Thank you sir. Actually, after modifying the code as I have mentioned earlier, I am getting the following error-

"Error using lmi/subsref (line 27)

LMI 'Equality' not available.

Error in MLESDP_inside_v2 (line 116)

cc = (ConstraintSet('Equality')); num = length(cc);".

My intuition is that this is because I changed the "c = c + set(S==0, 'Equality');". Is it true? If not, do you have any idea why it is showing like that? Or, is it because of any bug inside the code?

Thank you again for your time.

[Johan Löfberg]

In the original code, one of the constraints have been tagged with the name 'equality' to be used for referencing. hence you have to do the same

c + ((S==0):'Equality')

BTW, using brackets and concatenation instead of + to generate list of constraints is, in my opinion, easier to read

http://users.isy.liu.se/johanl/yalmip/pmwiki.php?n=Tutorials.Basics

[waseem abbasi]

actually, I am also facing the problem while using the set command:  

SET has been considered obsolete for many years, and the time has come...
Update your code. https://yalmip.github.io/tutorial/basics/

Error using constraint/set (line 6)
Obsolete command

Error in chap5_1 (line 14)
L=set(FAI<0);

 Kindly guide for the solution. Thanks in advance

[Johan Löfberg]

https://yalmip.github.io/tutorial/basics/