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Make array with elements repeating as many times as specified in another list.
a{1} = [1, 2, 4]; a{2} = [5, 3, 8, 9]; a{3} = [2, 6, 3, 7, 8, 1]; y_val = repelem(1:length(a), cellfun('length', a))

3年弱前 | 2

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Adjacency matrix.I want to simply the code .
n = 10; x=accumarray([2 3 n-1 n]',1); B = toeplitz(x,x); G=graph(B); plot(G)

3年弱前 | 0

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Generate random integers that sums to a specific number within a specific range
Revisit this old thread here is the randfixedsum version but for integers. It's a quick implementation and it is slow, but math...

3年弱前 | 1

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Move a Point on a 3D surface
% Generate test mesh x = 1:15; y = 1:15; [X,Y] = meshgrid(x,y); Z = peaks(15); F = delaunay(X,Y); % Your points to be p...

3年弱前 | 0

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How can I extract multiple rows from an array at regular intervals?
No need for reshape and repmat, etc... A = reshape(1:720, 72, 10); B = A((0:12:66) + (1:6)', :) % 66 is size(A,1)-6

3年弱前 | 2

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how to write all the for loop outputs in a single vector
function y = everyOther(x) L = length(x); i = 1:2:L; y = zeros(size(i)); for j = 1:length(i) y(j) = x(i(j)); end end

3年弱前 | 0

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I don't want any imaginary number , and I don't want any negative number in my matrix, but none of MathWork can even answer it.
Just add the max statement to clamp the variable nu01 whenever you set nu01 (2 places): nu01(1,w+1,z) = ...; nu01(1,w+1,z) =...

3年弱前 | 1

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converting matlab into python using an official matlab add on
Not official but recently I need to do conversion of a small function, and ChatGPT works great.

3年弱前 | 0

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Is it possible to restore all the variables from the previous session?
Unfortunately no. It's up to you to regularly save the intermediate results and make you program able to warn start from where ...

3年弱前 | 0

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Which method I can use for reduce number of samples or Increase the samples?
Take a look at interp1 https://www.mathworks.com/help/matlab/ref/interp1.html

3年弱前 | 0

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Fastest way to convert nested cell arrays into a Matrix?
If the deep nested arrays are column vectors Tmp=cat(2,ExampleCellArray{:})'; OutputMatrix=reshape(cat(2,Tmp{:})', [A_Length B...

3年弱前 | 0

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How can I do to break this while loop with the keyboard?
Try this test function test fig = uifigure(); ax = uiaxes('Parent', fig); h = plot(ax, NaN); stop = false; function...

3年弱前 | 1

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scatteredInterpolant gives out NaN in some query points
Probably your data contains NaN at one or several points. I don't quite understand your code datau.Value seems not valid sin...

3年弱前 | 0

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Why the calculation error enhances as the phase angle increases when using atan2?
It doesn't seem weird to me. Both of the (atan2+unwrap) and (sin+cos) do somekind of undo modulo 2*pi differently. unwrap make...

3年弱前 | 0

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Nested parfor effecting fprintf?
I add this line before the IF test something = rand() < 0.01 if(something) break end it works for me, my command window...

3年弱前 | 0

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All combinations of a data set without mixing data across arrays
If you have R2023a use the stock combinations function Var1 = [1400, 1700, 1900]; Var2 = [1340, 1680, 1900, 1871, 789]; Var3 ...

3年弱前 | 0

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Discrepancy between local maxima of cfit and global minima in second derivative
You missunderstand and missinterpret the second derivative. At the local minima the first derivative is 0 and the second deriv...

3年弱前 | 1

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how can i vectorize it?
If you prefer ugly and unreadable code %I BUILD DATA IN THIS EXAMPLE row=10; col=8; profit = rand(row,col); c3 = randi(si...

3年弱前 | 1

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Solving an overdetermined linear system
least square solution syms e0 e1 e2 T1=1; T2=3; T3=4; T4=5; T5=6; TM1=8; TM2=7; TM3=6; TM4=5; TM5=4; Eqns = [e0 + T...

3年弱前 | 0

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Reshape matrix dimensions to a larger and sparse one
A = [0.8147 0.1576 0.6557 0.7060; 0.9058 0.9706 0.0357 0.0318; 0.1270 0.9572 0.8491 0.2769;...

3年弱前 | 0

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質問

When assignment is allowed?
The question concerns the requirement of the sizes of the assignment between two arrays. To my great surprise this is allowed ...

3年弱前 | 1 件の回答 | 1

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How to use "eig" function in optimproblem?
Put whatever you want to compute (with eig) in a standard matlab function (e.g., in an mfile) then use fcn2optimexpr to convert ...

3年弱前 | 0

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Efficient and quick way to summation of large data points
instead of doing over and over (in the loop on the bottom) such calculation sum(omega(i1:i2)); you could do once the cumulati...

3年弱前 | 0

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i just want to know the given code is correct or not.
Replace the calculation with epsilon_complex = (epsilon_inf + sum(A ./ (C.^2 - E^2 - 1i * v * E))); epsilon_real = real(epsilo...

3年弱前 | 0

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How I would determine if a string contains multiple substrings?
myString = "This has some words in it."; subStrings = ["This","some"]; hasAllSubstrings = isequal(regexp(myString, subString...

3年弱前 | 2

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Implement the "total variation distance" (TVD) in Matlab
Supremum is very often implemented by max, since one can only list or compute a finite set on computer. However your formula d...

3年弱前 | 1

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Error using .' TRANSPOSE does not support N-D arrays. Use PAGETRANSPOSE/PAGECTRANSPOSE to transpose pages or PERMUTE to reorder dimensions of N-D arrays.
Your image I is 3D RGB not 2D so you have to do 2D interpolation page by page for k = size(I,3):-1:1 I2(:,:,k) = interp2...

3年弱前 | 0

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Calculating the area of overlapping polgyons
Is it what you want? (I'm not sure about the desired output if polygons are not hierachical included to each other, see variant ...

3年弱前 | 0

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Can't find references for lqr.m
https://www.mathworks.com/products/control.html

3年弱前 | 0

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randinrc
randi with non-repeat constraint.

3年弱前 | ダウンロード 1 件 |

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