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ranking the data in matrix and arrange them as per rank.
>> D=[1 2 3; 7 8 9; 4 5 6; 3 0 5]; E=[D sum(D')' ranks(sum(D')')] Unrecognized function or variable 'ranks'. Did you mean:...

5年以上前 | 0

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How can I generate all possible combinations of a vector containing specific numbers in it?
J=nchoosek(1:8,3); [m,n]=size(J); I=repmat((1:m)',1,n); accumarray([I(:) J(:)],1)

5年以上前 | 1

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3 equations 3 unknowns complex numbers
A\B

5年以上前 | 0

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This error was detected while a MEX-file was running.
It simply means the MEX file is buggy.

5年以上前 | 0

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Why it is not possible to do array indexing directly after function that returns array?
There might be some syntax confusion that leads TMW not to do that. The issue is that the indexing and function argument both us...

5年以上前 | 1

質問

What is the advantage of Help with web connection
It seems MATLAB help switch recently by default on "Web documentation" It kind of anoying where the doc is available locally. W...

5年以上前 | 1 件の回答 | 1

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Is there a reason why my stl file isn't being read correctly?
You should not use delaunayTriangulation to make connectiviy of the points. It creates a convex hull of all the points. Usualy ...

5年以上前 | 0

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Partition of a set.
https://www.mathworks.com/matlabcentral/fileexchange/17818-all-permutations-of-integers-with-sum-criteria >> N=5; L=3; >> h=al...

5年以上前 | 0

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Partition of a set.
https://www.mathworks.com/matlabcentral/fileexchange/24133-set-partition >> N=5; L=3; >> DispPartObj(SetPartition(N,L)) The 2...

5年以上前 | 0

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How can I calculate the percentage of clouds within each grid box i.e. 1 degree x 1 degree?
Take a look at function histcount2 and histogram2

5年以上前 | 0

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Help me find the index value for first minimum value in a matrix.
[~,idx] = min(A)

5年以上前 | 0

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what function can be used like arranging number like that?
[~,B] = sort(A); B(B) = 1:length(B)

5年以上前 | 0

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Power method to determine largest real eigenvalue does not converge
The png is not correct if A has negative largest eigan (absolute) value Try this A = [1 2 1; 6 -1 0; -1 -2 -1]; [V,D] = eig...

5年以上前 | 1

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How to extract a different columns for each row of a matrix without using a loop?
N = size(A,1); C = A((1:N)'+N*(B-1)); Also take a look of function sub2ind().

5年以上前 | 0

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Least-square with 2-norm constraint
Minimize |A*x-b|^2 such that |x| = cte

5年以上前 | ダウンロード 1 件 |

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Multiple eigen-values for 2x2 and 3x3 matrices
Compute in one shot the eigen-values of multiples (3 x 3) matrices using Cardan's formula

5年以上前 | ダウンロード 1 件 |

4.9 / 5

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MultipleQR
Perform a bunch of QR factorization of same size matrix

5年以上前 | ダウンロード 3 件 |

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How to put a spline through points representing a path
Put this next-below to your code waypoints=unique(waypoints,'rows','stable'); % <- this is required because your example as dup...

5年以上前 | 1

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Extract first and last nonzero elemenents inside subarrays avoiding mat2cell
A = [0 0 1 2 0 5 0 0 6 0 3 0 ; 0 3 0 2 6 0 0 0 0 0 0 0]; b = reshape(A.',6,[]) ~= 0; [m,n] = size(b); [~,istart] = max(b,[]...

5年以上前 | 0

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how to generate permutations of N numbers in K positions
No loop, no extrenal file needed N=5; K=3; P=nchoosek(1:N,K); P=reshape(P(:,perms(1:K)),[],K) You might further sort the p...

5年以上前 | 3

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How to generate this matrix?
>> rho=rand rho = 0.8832 >> N=4 N = 4 >> a=rho.^(0:N-1); >> M=toeplitz(a,a) M = 1.0000 ...

5年以上前 | 0

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Roots of a sixth order polynomial in symbolic form
"Ok let me elaborate a bit further. I have a system with a sixth order denominator polynomial, like i mentioned in the question....

5年以上前 | 0

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How to vectorize A\B operation on slices of 3D matrices?
Yes there is new news since I post this MultipleQR fex (MEX required, OpenMP multithreading), for 6 x 6 this is the speed up on ...

5年以上前 | 2

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Determine polynomial coefficients so that it's roots lie on the unit circle
For P(z) = a*z^2 + b*z + c; I claim this is these two conditions are equivalent to the fact that P has two roots on unit circ...

5年以上前 | 1

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Readability of matlab code
Why not use object oriented programing? Put your external parameters in properties. Put your functions as methods. Implement an...

5年以上前 | 0

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Piecewise differentiation, automatic identification of pieces
https://www.mathworks.com/matlabcentral/answers/587987-linear-segmentation-of-noisy-data?s_tid=ta_ans_results

5年以上前 | 2

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Random derangement
Generate sequences of random derangement

5年以上前 | ダウンロード 2 件 |

0.0 / 5

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Why Contour matrix M ( [M,c] = contour(__) ) contains the data points exceeding xmax/ymax?
[M,h]=contourf(f,8) Return contours of 8 levels, not single level of value 8. You might use this function to decode the output...

5年以上前 | 0

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What frustrates you about MATLAB? #2
Some time data comes as single, but text just rejects it >> x=single(0); >> y=single(0); >> text(x,y,'Why single is not suppo...

5年以上前 | 2

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How can I get randperm to return a permutation of a vector that has no entries at their original positions?
Here is an implementation of a non-rejection method and unbiased random derangement: function p = randder(n) % p = randder(n) ...

5年以上前 | 2