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How can I plot the Temperature distribution in this code.
Play arround with slice: % LBM 3D - D3Q15 Heat Diffusion in a Plate % Problem - 5.10 clc clear variables close all alpha =...

quasi 3 anni fa | 1

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How to multiply a matrix to another cell matrix
Use cellfun: A = magic(3) C = {rand(3,4); rand(3,4); rand(3,4); rand(3,4); rand(3,4)} result = cellfun(@(x)mtimes(A,x),C,'Uni...

quasi 3 anni fa | 1

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Why do the ode45 solver is not running in my code?
Your problem appears to be stiff - use ode15s instead: clear; clc; a = 1; %alpha p = 7.5; %rho b = 4; %beta g = 16; %gamma ...

quasi 3 anni fa | 0

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i'm getting this error "Unable to perform assignment because the left and right sides have a different number of elements"
Problem 1 h returns more than one solution which produces the error because the result of xa1(i+1)=I2(i)+h*S2(1) with h bein...

quasi 3 anni fa | 1

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All possible combination based on 2^n
n = 3 ff2n(n)

quasi 3 anni fa | 0

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percent of similarity between images
When using a neural net you could use the score output argument to get this. Look at this example there is a bar chart based on ...

quasi 3 anni fa | 0

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How I can append matrices of different dimensions in another matrix?
A = randi(10, 3, 1) B = rand(4, 1) C = randi(10,5,1) D = vertcat(A,B,C)

quasi 3 anni fa | 0

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Checking if 2 edges in a graph are connected
You could use the neighbors function, which gives a list of connected nodes for a given node. You could combine this with the is...

quasi 3 anni fa | 0

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hi guys, I want to make a spectral RollofPoint of speech and when I enter this code from mathworks, I get this error that the variable t1 is not declared, even though I declared it. Please I will be happy for every piece of advice.
You have to run code so that the variables appear in your workspace. go to the editor tab and press "run". the editor tab appear...

quasi 3 anni fa | 0

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how to remove spaces in a string?
A = ["Ly R4", "Ba R7", "Ty Ru"] B = erase(A," ")

quasi 3 anni fa | 1

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Using previous value to get the next in for loop
The semicolon operator supresses outputs to the command window: h=0.1; y(1) = 0; for k=2:6003 y(k) = y(k-1) + h.*u(k-1);...

quasi 3 anni fa | 1

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Converting Cell matrix to a Numeric Matrix
B={'2' '3' '5'; '4' '7' '2'; '7' '5' '2'} C = cellfun(@(x)str2double(x),B)

quasi 3 anni fa | 1

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extracting droplets with fringes from a image
Have a look at imfindcircles. It might be useful to run imbinarize first.

quasi 3 anni fa | 0

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Multiplication of two different continuous signal in Matlab
You made a mistake in defining t2...t6: x = 0:0.05:6; y = sin(x); subplot(3,1,1) plot(x,y) t1 = 0:0.05:1; t2 = 1.05:0.05:2...

quasi 3 anni fa | 0

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Datetime coloumn in a matrix of double
You can not mix data types in arrays - use a table or a timetable to do this. In your case the array2table or array2timetable mi...

quasi 3 anni fa | 0

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Function that returns the number given squared
https://de.mathworks.com/help/matlab/ref/function.html?s_tid=doc_ta#btexm3w

quasi 3 anni fa | 0

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Matlab plot problem line 13
syms r E y K eqn = r*(1-y/K)*y-E*y==0; S = solve(eqn); y1=S(1); y2=S(2); h=0.01; E=1; r=2; K=1; y = double(y1-h:h:subs(...

quasi 3 anni fa | 1

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How to produce square matrix in this form
k = 2; % define how often to repeat the pattern result = toeplitz([5 repmat([1 0 0 0],1,k)]) gives: result = 5 1 ...

quasi 3 anni fa | 1

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how do i plot a complicated function
alpha = 2; gamma = 3; k1 = 0.5; k2 = 0.15; syms eta(x,y) Eta eta(x,y) = (sqrt((x*k1+gamma*(1-y)-alpha)^2-4*x.*(gamma*k2...

quasi 3 anni fa | 1

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Solve equation (unrecognized function or variable)
% define t as symbolic syms t N = 5.62; R = 6.40; W = 600; eqn = (10 + 2.*W.^(2).*t.^(2) - 8.*W.^(4).*t.^(4))./(10 +23.*...

quasi 3 anni fa | 0

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How to doI plot F(x) = [1 -(10/x)]/[1-(100/x^2)] for X ranging from 100 to 1100 at an interval of 50?
F = @(x) (1-(10./x))./(1-(100./x.^2)); x_vals = 100:50:1100; plot (x_vals, F(x_vals))

quasi 3 anni fa | 2

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Change frame rate of video file
You are fully right. First read all the frames using the read command for VideoReader. Then make a VideoWriter object and use th...

quasi 3 anni fa | 1

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How to optimise two variables at once
b = 166; %inertance c = 2000; %damping value lb = [0 500]; % lower bound ub = [500 3000]; % upper bound x0 = [b, c]; %...

quasi 3 anni fa | 0

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How to find every combination of values in a cell array?
One way, using allcomb: M = {[1,2,3], [4,5,6],[7,8,9]; [10,11],[12,13],[14,15]; [16,17,18,19,20],[21,22,23,24],[25,26,27,28]}...

quasi 3 anni fa | 1

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function in matlap#
https://de.mathworks.com/help/matlab/ref/function.html https://de.mathworks.com/help/matlab/matlab_prog/create-functions-in-fil...

quasi 3 anni fa | 0

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How to ignore negative indices or assign it to zero in a loop
It is not needed to make the elements zero - they are already, because you preallocated y with zeros: x=[1 2 -1 -3 -4] h=[0 1 ...

quasi 3 anni fa | 0

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Matlab schließt sich sofort nach dem starten wieder
Hallo, in diesem Forum wird fast ausschließlich auf Englisch geschrieben - was die Chance Deiner Frage beantwortet zu werden dr...

quasi 3 anni fa | 0

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Helo everyone, I want to ask about my error in matlab. Error: File: Untitled5.m Line: 57 Column: 56 -> (rand(1,nvar).*c1.*(pbest(pop,:)x(pop,:))+...) Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or
Line 36: for iter=1:maxiter for pop=1:maxpop % update velocity v(pop,:)=w*v(pop,:)+... rand(1,nvar)...

quasi 3 anni fa | 0

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Create Block Toeplitz Matrix
Try: rng(123) A = eye(3); B = randi(10,3); Omega = kron(A,B) gives: Omega = 7 6 10 0 0 0 0 ...

quasi 3 anni fa | 0

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IF statements together with ODE
This example appears to be what you need.

quasi 3 anni fa | 0