Line | |
---|
1 | function X=diag(X,k) |
---|
2 | %DIAG (overloaded) |
---|
3 | |
---|
4 | % Author Johan Löfberg |
---|
5 | % $Id: diag.m,v 1.1 2006/08/10 18:00:19 joloef Exp $ |
---|
6 | |
---|
7 | n = X.dim(1); |
---|
8 | m = X.dim(2); |
---|
9 | |
---|
10 | if nargin == 1 |
---|
11 | k = 0; |
---|
12 | end |
---|
13 | |
---|
14 | if min([n m])==1 |
---|
15 | Y = X; |
---|
16 | diagX = diag(X.basis(:,1),k); |
---|
17 | Y.basis = diagX(:); |
---|
18 | for i = 1:length(X.lmi_variables) |
---|
19 | diagX = diag(X.basis(:,i+1),k); |
---|
20 | Y.basis(:,i+1) = diagX(:); |
---|
21 | end |
---|
22 | Y.lmi_variables = X.lmi_variables; |
---|
23 | Y.dim(1) = size(diagX,1); |
---|
24 | Y.dim(2) = size(diagX,2); |
---|
25 | X=Y; |
---|
26 | else |
---|
27 | index = diag(reshape(1:n*m,n,m),k); |
---|
28 | X.basis = X.basis(index,:); |
---|
29 | X.dim(1) = length(index); |
---|
30 | X.dim(2) = 1; |
---|
31 | X = clean(X); |
---|
32 | end |
---|
33 | % Reset info about conic terms |
---|
34 | if isa(X,'sdpvar') |
---|
35 | X.conicinfo = [0 0]; |
---|
36 | end |
---|
Note: See
TracBrowser
for help on using the repository browser.