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How to index lmi constraints?
Something like this would be a complete vectorization n = 3; [i,ii] = find(triu(ones(n),1)); index = sub2ind([n n],i,...

約12年 前 | 1

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mixed integer(all are binary) problem
If you only have linear constraints, and the problem is as small as it is here, you should really use a dedicated mixed-integer ...

12年以上 前 | 0

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solve an inequality with LMI approach
With the MATLAB Toolbox YALMIP, and some SDP solver installed (such as SDPT3, SeDuMi, Mosek etc) it would be (you have not clear...

12年以上 前 | 1

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about the use cplex for solving LP in matlab
Late answer but anyway... 1. Why have you installed such an old version? 12.6 has been out for a long time now 2. This err...

12年以上 前 | 0

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How to solve affine Linear Matrix Inequlaity?
Standard approach is to use a common Lyapunov function, i.e., define two LMIs, one for h = 0 and one for h = -45.86. From convex...

12年以上 前 | 1

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Why LMI toolbox/ Yalmip get a semi-positive definite matrix as the answer?
Strict inequalities are not really supported http://users.isy.liu.se/johanl/yalmip/pmwiki.php?n=Blog.Prepare-your-code BTW...

12年以上 前 | 0

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YALMIP not able to find PENBMI solver for solving bilinear matrix inequlality
1. You are using a very very old version of YALMIP 2. SET is obsolete 3. Yes, you have to install PENBMI. YALMIP does not ...

12年以上 前 | 0

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Nonlinear optimal control by using yalmip
The problem is that you are creating a nonconvex nonlinear problem, and fmincon simply fails to find a solution. You see this if...

12年以上 前 | 1

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Number of lattice points within a circle
Find the number of points (x,y) in square lattice with x^2 + y^2 =< n. This is related to Jame's <http://www.mathworks.com/matla...

13年弱 前

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

13年以上 前

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Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

14年以上 前

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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

14年以上 前

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

14年以上 前

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

14年以上 前

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

14年以上 前

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

14年以上 前

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Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

14年以上 前

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

14年以上 前

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

14年以上 前

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

14年以上 前

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

14年以上 前

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

14年以上 前

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

14年以上 前

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

14年以上 前

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Add two numbers
Given a and b, return the sum a+b in c.

14年以上 前

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

14年以上 前

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

14年以上 前

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

14年以上 前