Bug/fix with 1x1 (scalar) sdpvar and 3-dimension repmat

[Olivier Mégel]

Hi Johan,

I think I have spotted a bug when trying to duplicate a scalar sdpvar into a 3-dimension sdpvar object:

reproducible code :

P_prev=sdpvar(1,1)
P_prevS=repmat(P_prev,[2,2,2])

I tried with other replication factors than [2,2,2], they all seem to lead to the same error (even [1,1,1]), it seems to come from the MATLAB reshape function:

"Error using reshape

ND sparse arrays are not supported." 

This error can be spotted by putting a breakpoint in yalmip\@sdpvar\repmat.m , line 50 (B = reshape(B,siz);).

However, when replacing this line by 

        try
            B = reshape(B,siz);
        catch
            B = reshape(full(B),siz);
        end

It seems to work. Does this solve the issue, or am I messing up something else in YALMIP by doing this?

Best,

Olivier

[Johan Löfberg]

works, but doesn't scale well 

(but neither does the current code, needs a complete overhaul)

[Olivier Mégel]

OK thanks for the info!