Answered
Faster polygon operations than polyshape
I used http://www.angusj.com/delphi/clipper.php#code with satisfaction

5 years ago | 1

Answered
MeX implementation of Tensorproduct multiplications
I propose two other methods of MATLAB. The first simply replaces (:,:) by RESHAPE. The first doing some data copy, the second d...

5 years ago | 0

| accepted

Answered
When is minimum p-norm solution independent of p?
This code is a toy example of 2 x 2 with random f0 and show most of the time it driven by the linear constraints and all three g...

5 years ago | 2

Answered
Generate a Matrix with the structure in the description
A=nchoosek(1:128,2)

5 years ago | 1

| accepted

Question

MEX: How to modify xml file for unsupported compiler?
Context: I download the intel oneAPI C++ compiler. The C compiler is not supported by Matlab R2020b and I try to design the xm...

5 years ago | 1 answer | 3

1

answer

Answered
Avoid MCR CACHE deletion each time an executable is launched
"Now, if I launch the Filter.exe, the folder of the Init.exe in the MCR_CACHE is deleted and a folder for the Filter.exe in the ...

5 years ago | 0

Answered
How to Generate Randomized Data Set with Given Mean/Median/Standard Deviation
There is infinity of random variables with the same mean/median/standard deviation Here is one that meet what you ask (three di...

5 years ago | 0

Answered
Vectorize for loop: corr2(A(:,:,i),B(:,:,i))
If you have R2020b, you mght try to vectorize with pagemtimes function (or use mtimesx from File exchange) meanA = mean(A,[1 2]...

5 years ago | 0

| accepted

Answered
Multiplication of tranformation matrices gives strange result
Your decription does not match with what your code is doing (your code) You take T1 on (x,y) data You take T2 on (x,y)...

5 years ago | 1

| accepted

Answered
How to find the last 1 in every row
Depending on the density of 1s, but a for-loop (remember that?) might be the fatest function BenchMax A=rand(10000)>0.5; ...

5 years ago | 0

Answered
Reshape data vector for a surf plot over a non-rectangular domain
A diamond shape is bijective mapped from/to a rectangular shape, thus meshgrid/ndgrid combined with surf are still applicable. ...

5 years ago | 1

Answered
Matrix Operation and decomposition
Just straight as-it-is syntax A^(1/2) A^(-1/2) or sqrtm(A) inv(sqrtm(A)) % sqrtm(inv(A)) Checkout https://www.mathworks.co...

5 years ago | 0

| accepted

Answered
atan2 not consisent
Your result atan2(a(77:78,2),a(77:78,3)) ans = 3.141592653589793 -3.141592653589793 Type single value a(78,2) yo...

5 years ago | 0

Answered
Determinant of a unitary matrix
Here is one way of computing determinant of a complex matrix U, based on Q-less qr n = size(U,1); d = 1; for k=1:n i = k...

5 years ago | 0

Answered
Counting consecutive negative numbers in an array
length(strfind([false v<0],[0 1])) or sum(diff([false v<0])==1)

5 years ago | 1

| accepted

Answered
Output only numbers with complex conjugate
a(ismember(a,conj(a))&imag(a)>=0)

5 years ago | 0

| accepted

Submitted

Random unitary matrix (and standard subgroup of U(n))
Generate matrix of one of these four supported types of groups: O(n), SO(n), U(n), SU(n)

5 years ago | 1 download |

5.0 / 5

Answered
Possible combinations for a vector
dec2base(0:3^9-1,3)-'0'

5 years ago | 0

Question

Determinant of a unitary matrix
Is there any other (better) way to compute the determinant of the unitay matrix beside det (that calls lu factorization)? >> [U...

5 years ago | 2 answers | 0

2

answers

Answered
Create Random Points in Elliptical Belt
If the two ellipse has the same aspect ratio and aligned then this is the method without rejection. n=1e4; ax=3; ay=1; rin...

5 years ago | 0

Answered
Find angle of rotation matrix in MATLAB
Yes the approach is wrong your code has plenty of bugs* you need to learn how to debug you need to pratice MATLAB onramp O...

5 years ago | 0

Answered
difference between str2num and str2double for getting a matrix
Under the hood str2num uses EVAL str2double uses SCANF, and work only on scalar. I see no reason why SCANF is more accurate t...

5 years ago | 0

| accepted

Answered
how to calculate number of unique element in array?
c =[ 1 1 1 1 1 1 2 1 2 2 2 3 2 4 2 5 2 5 3...

5 years ago | 0

Answered
What is the simplest way to map vector values of float to matrix of floats ?
The only vector of key map container supports is char vector (variable length) If your vector has fixe length say n; you could ...

5 years ago | 0

Answered
Solving a linear system equations with variables on both sides
See my answer in another thread.

5 years ago | 0

Answered
Bit wise operation of And and XOR together
Z=quad(0,1,1,0,1,0,1,1) function F10 = quad(u2,v2,w2,x2,u3,v3,w3,x3) % note: u2 and u3 not used anywhere F10=1+v2+x2+x2*v2+...

5 years ago | 0

Answered
Surface plot not displaying full data range
Cross answer

5 years ago | 0

Answered
surface plot face not showing colors corresponding to Zgrid in some areas
Here is a workaround, keep flat facecolor. You can use mean/min instead of max depending on what is relevant for you. Z=peaks(1...

5 years ago | 0

Question

LOADLIBRARY error 'CL' and LIMITS.H not found
I get this error message recently >> loadlibrary('C:\WINDOWS\system32\user32.dll', 'WinMouse.h') Error using loadlibrary Fail...

5 years ago | 0 answers | 4

0

answers

Answered
grouping indices based on how close they are
If your array is sorted >> c = mat2cell(a,1,diff(find([true diff(a)>5 true]))); c{:} ans = 11 12 13 ans = ...

5 years ago | 0

| accepted