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Splitting code into groups
Note that the run button will run all your code in one, while the other buttons will run you code section wise and go / go not t...

4ヶ月 前 | 0

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Solution to a simple equation
use isolate instead of solve: clear all; close all; syms R L C omega eqn=1 - 2*C*L*omega^2 + C^2*R^2*omega^2 + C^2*L^2*omega^...

4ヶ月 前 | 0

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how to make a function of this system
syms a b y1(t) y2(t) ode(1,1) = diff(y1,t,2) == a*y2 - cos(diff(y1,t)); ode(2,1) = diff(y2,t) == b*y1 + cos(t) [V,S] = od...

4ヶ月 前 | 1

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error with plotting graph
Since theta is a vector you need to perform elementwise multiplication: a = 13; c = 17; k = 2*pi/3; theta = 0:0.0001:2*pi; ...

4ヶ月 前 | 1

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Getting error with the code in ode45 function
t=[0 5]; inity = 1; [t,y]=ode45(@f, t, inity); plot(t,y) function dy = f(~,y) % y=[9,100]; dont overwrite y D=0.00000001; ...

4ヶ月 前 | 0

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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 =...

4ヶ月 前 | 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...

4ヶ月 前 | 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 ...

4ヶ月 前 | 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...

4ヶ月 前 | 1

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

4ヶ月 前 | 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 ...

4ヶ月 前 | 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)

4ヶ月 前 | 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...

4ヶ月 前 | 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...

4ヶ月 前 | 0

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

4ヶ月 前 | 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);...

4ヶ月 前 | 0

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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)

4ヶ月 前 | 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.

4ヶ月 前 | 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...

4ヶ月 前 | 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...

4ヶ月 前 | 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

4ヶ月 前 | 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(...

4ヶ月 前 | 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 ...

4ヶ月 前 | 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...

5ヶ月 前 | 0

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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.*...

5ヶ月 前 | 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))

5ヶ月 前 | 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...

5ヶ月 前 | 0

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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]; %...

5ヶ月 前 | 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]}...

5ヶ月 前 | 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...

5ヶ月 前 | 0

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