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How do i remove conj from differention?
clear all syms x v s a y z r t real syms x(t) y(t) assumeAlso([y(t),x(t)],'real') A=[x, diff(y(t),t), s; y, z, r; s x(...

15일 전 | 0

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How to change the values of both axes
%Define variables sigma = 35*10^6; young_modulus = 90*10^9; strain_coefficient = 6*10^-9; magnetic_field = linspace(0, 16000...

15일 전 | 0

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Selecting files from a directory
sims = pwd; %uigetdir ('C:\Matlab') save test.in sims % create a file info = dir(fullfile(sims,'*.in')) list = {info(~[info...

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fit function does not work correctly
If the StartPoint is good enough, you can get the correct fitting. t = [0:0.01:6]'; %Test with a cosinus function y = cos(t*3...

15일 전 | 0

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Display values of each element in imagesc
c = randi([0 40], [16 16]); heatmap(c); colormap(jet(512))

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How to plot this frequency graph?
load runoff load precipitation precipitation = normalize(precipitation, 'range'); runoff = normalize(runoff, 'range'); histo...

16일 전 | 1

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How can I extract the values form the cell array?
Obviously, you don't have a matlab cell array (is it a python array?). The matlab array may look like the following: a(1).name...

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Find the index of a value closest to a constant value in 3D array when the index of row and column are given
B(:,:,1) =[ 1 2 4 2 7 8 9 0]; B(:,:,2) =[ 9 2 4 7 0 1 2 ...

17일 전 | 0

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Sparse Matrix with Same number of non-zero values in each column
A = createMatrix(8, 4); full(A) function A = createMatrix(n, k) A = sparse(n,n); for i=1:n A(randperm(n, k), i) = 1/k; ...

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Displaying frames captured by getframe(h) at original size
You can use "imshow" which by default show images in 100% magnification. "doc imshow" for more details.

19일 전 | 0

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using imagesc to plot a matrix of data
%C = 0.1:0.1:0.2; C = [0.1 0.2]; % There are only two points along x F = 0.1:0.1:0.5; figure(1) subplot(1,3,1) mean_GT...

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How to create a circle filled with equidistant points inside it?
Here is a sub-optimal (or almost optimal) solution. Filled dots will form the hexagonal formation. radius = 10; d = 1; % dis...

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How I plot a matrix wich each rows is a different curves on the graph?
a = randn(6, 21); plot(a')

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How to Convert Magnitude(g/N)/Phase (degrees) data in to Complex Receptance (m/N)
x =[0.00000e+000 1.16597e+002 -1.80000e+002 3.12500e-001 9.33462e+001 5.02240e+001 6.25000e-001 ...

21일 전 | 0

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3D Plot of a Matrix with only Char data type
x= {'USA', 'Germany', 'South Africa', 'China', 'Mexico', 'Australia'}; y = {'America', 'Europe', 'Africa', 'Asia', 'South Amer...

21일 전 | 0

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Massive time required for pdist
%tic X = rand(1000,2); Y = rand(1000,2); % fprintf('Time for array creation: '); %toc %% Version 1 tic j=1; for i = ...

22일 전 | 0

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How to arrange the constraints shape to A matrix and b constants automatically ( Ax <= b)??
% Let x = [x1; x2; x3; x4] % x1 + x2 <= x3 + x4 + 1 ; % constraint 1 % => [1 1 -1 -1]*x <= 1 % X3 <= x1 + 10 ; % cons...

24일 전 | 0

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Array of Structures to Structure of arrays
% array of structure M = 5; for i=1:M a(i).f1 = rand(1,1); a(i).f2 = rand(1,1); end a a(1) % struncrure of arr...

25일 전 | 0

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How to detect and delete similar value rows in Matlab?
A =[1 2 3 4; 1 3 4 2; 1 4 2 4; 1 3 2 2]; % For columns with the same values i = find(all(diff(A, 1)==0, 1)); ...

27일 전 | 0

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How to collect output matrix from for loop
If you want to accumate over different matrices n = 10; A = zeros(3, 3) for i=1:n A = A + randi(5,3,3); end A If you ...

27일 전 | 0

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Write a script file that will compute the sine of an angle using the Taylor series formula:
disp("Input the angle in degrees (x) and the number of terms (n)") %x = input('x: '); x = 45; %n = input('n: '); n = 100; ...

27일 전 | 0

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how to normalize a uniformly distributed random values such that every row sum of X(:,:,i) should be 1 except for ith row?
n=6; key_size=3; i=5; X = rand([n,key_size,6]); idx = [1:i-1 i+1:n]; X (idx, :, :) = X (idx, :, :)./sum(X (idx, :, :), 2); ...

27일 전 | 0

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Please Help Debug/ What are the errors?
t=-2:0.1:8; % define t first, since it is used next y=t.^3-6*t.^2+3*t+10; % need the element based operat...

27일 전 | 0

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Count occurrences of categorical conjunction
Cat_one = categorical({'A'; 'B'; 'A'; 'D'; 'C'; 'B'; 'B'; 'A'; 'A'}); Cat_two = categorical({'X'; 'X'; 'Y'; 'Y'; 'Y'; 'X'; 'Y';...

28일 전 | 1

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How to plot array with result of roots?
P=1:0.1:10; A=P; B=-(10+5*P); % 5*P not 5P C=3; D=-15; for i =1 : length(P) fv=[A(i) B(i) C D] v(i)=max(roots...

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What am I missing with plot? math is working fine, just need to plot it.
For ervery loop, you have only one point (x,y) which you can not plot as a line. Use plot(x, y, 'bo') to plot the point instead...

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sampling and FFT of a sinusoid signal
f0 = 50; fs = 250; t = (0:1/fs:(0.1-.5/fs)); % [0, 0.1) g = sin(2*pi*f0*t); plot(t, g); L = 512 Y = fft(g, L); % compute...

29일 전 | 0

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Why the following code does not give me the 3D plot. Please someone help me out.
In your definition of R0, there is a term rho1+rho2, which happen to be 0. So R0 is just 0. Check your formula first.

30일 전 | 0

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How to find standard deviation of all entries in a range and omit nan
A=rand(10); StdssA=std(A(2:4,3:7), 0, 'all', 'omitnan') % doc std

약 1달 전 | 0

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How to reduce computation time with 8 nested for loop
Brute force searching for such problem is not feasible. If it takes around 10 days to reach to 10^13, it takes 10*10^11=10^12 d...

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