YALMIP

[SivaBU]

how can we define the appropriate dimension matrices in yalmip? 

[Johan Löfberg]

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

[SivaBU]

For solving complex valued LMIs, i have one appropriate dimension matrix because of introducing zero equation. If i define that as

sdpvar(n,n,'full','complex') i cant get the feasibility. how to define this type of matrices? can i define this like sdpvar(n,n,'hermitian','complex');         

[Johan Löfberg]

I have no idea what you are trying to say, but to define a complex Hermitian matrix, you use sdpvar(n,n,'hermitian','complex'). If you want some elements of that matrix to be zero, you either replace the elements with zero, or add equality constraints

[SivaBU]

Thank you for your reply. For solving complex valued LMIs, I have all the matrices are Hermitian. But i have one matrix which need not necessary to be an Hermitian matrix.  It can be any complex valued matrix. i don't have any idea to define that matrix. This is my problem, can you understand ?  

[Johan Löfberg]

From help

help sdpvar
...
    The other types are obtained as above
      X = sdpvar(n,n,'symmetric','complex') Complex symmetric nxn matrix (X=X.')
      X = sdpvar(n,n,'full','complex')      Complex full nxn matrix
      ... and the same for Toeplitz, Hankel and skew-symmetric

i.e.,

X =sdpvar(n,m,'full','complex')

Explained here too
http://users.isy.liu.se/johanl/yalmip/pmwiki.php?n=Commands.Sdpvar