![]() example MV diag (V,K) places the elements of V on the K th diagonal of the matrix MV. This command is used to the define decision variables. Syntax MV diag (V) MV diag (V,K) VM diag (M) VM diag (M,K) Description example MV diag (V) creates an uncertain matrix MV whose diagonal elements are the elements of the uncertain vector V and whose off-diagonal elements are 0. ![]() The most important command in YALMIP is sdpvar. If a is 2-D, returns the diagonal of a with the given offset, i.e., the collection of elements of the form ai, i+offset. v diag(X) returns the main diagonal of X, same as above with k 0. If you wish to perform operations between the specific elements of two matrices or vectors, you should use element by element operations. diagonal (a, offset 0, axis1 0, axis2 1) source Return specified diagonals. k 0 represents the main diagonal, k > 0 is above the main diagonal, and k < 0 is below the main diagonal. ![]() Having seen that, let us start from the beginning. v diag(X,k) for matrix X, returns a column vector v formed from the elements of the kth diagonal of X. D diag(v,k) places vector v on the kth diagonal. By default, all numeric values are represented with double-precision floating point format. If the diagonal elements are not equal to zero, it would mean that the predictions are being counted twice, both as correct and as a false positive or false. problem = 0 % Extract and display value solution = value ( x ) else display ( 'Hmm, something went wrong!' ) sol. For example, a scalar value (e.g., 5) is formally a 1-by-1 array. Use diag to create a matrix with the elements of v on the main diagonal. % It's good practice to start by clearing YALMIPs internal database % Every time you call sdpvar etc, an internal database grows larger yalmip ( 'clear' ) % Define variables x = sdpvar ( 10, 1 ) % Define constraints Constraints = for i = 1 : 7 Constraints = end % Define an objective Objective = x '* x + norm ( x, 1 ) % Set some options for YALMIP and solver options = sdpsettings ( 'verbose', 1, 'solver', 'quadprog', 'quadprog.maxiter', 100 ) % Solve the problem sol = optimize ( Constraints, Objective, options ) % Analyze error flags if sol. This MATLAB function returns a square diagonal matrix with the elements of vector v on the main diagonal. ![]()
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