I’d like to report a bug in CVX 3.0 (version downloaded from website mid-Feb. 2017).
The following crashes:
cvx_begin
variable X(2,2) symmetric;
variable y(2);
kron(X, eye(2));
kron(y, ones(2, 1));
cvx_end
with the following output:
Error using reshape (line 16)
Size vector must have at least two elements.
Error in find (line 35)
Error in kron (line 31)
Error in bug (line 4)
kron(X, eye(2));
29 error( e2 );
As a workaround, use the following kron implementation, written using an outer product:
function res = workaroundkron(x, y)
x1 = size(x, 1);
x2 = size(x, 2);
y1 = size(y, 1);
y2 = size(y, 2);
res = y(:) * x(:)';
res = reshape(res, [y1 y2 x1 x2]);
res = permute(res, [1 3 2 4]);
res = reshape(res, [y1*x1 y2*x2]);
end
Note: I have done minimal testing of this workaround, use at your own risk.
Output of cvx_version (private info < removed > ):
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CVX: Software for Disciplined Convex Programming (c)2014 CVX Research
Version 3.0beta, Build 1175 (1326ef2) Mon Nov 23 14:29:34 2015
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Installation info:
Path: <removed>
MATLAB version: 8.6 (R2015b)
OS: Linux amd64 version 4.4.0-62-generic
Java version: 1.8.0_121
Verfying CVX directory contents:
WARNING: The following files/directories are missing:
<removed>/examples/ + 504 files, 30 subdirectories
<removed>/mosek/glx/ + 2 files, 0 subdirectories
These omissions may prevent CVX from operating properly.
Loading preferences:
Preferences already loaded:
Local: <removed>
License host:
Username: <removed>
Host ID: <removed>
Installed license:
No license installed.
No valid licenses found.
<removed>
for the username and first hostid listed above.
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May I ask why would you use version 3.0?
Any status on the development of CVX 3.0?
I wish to see it goes forward.
I wanted to test more solvers, and have control over the primal/dual form (cvx_dualize).
