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vpaintegral() returns wrong answer for g(t) = (mod(t,5))^2
This seems to be a bug. You can use the following workaround syms t real g(t) = (t-floor(t/5)*5)^2 fplot(g, [0 10]) vpainteg...

5 years 前 | 1

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How can I plug the symbol vector into function.m file for ode solving?
Are you manually pasting your symboling expression in the ODE() function? You can use odetovectorfield(): https://www.mathworks....

5 years 前 | 0

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已回答
Inserting Elements in middle of 1-D, 2-D, N-D Array
interp1() is suitable for such cases. X = [1 2 3 4 5]; n_new = 9; X_new = interp1(linspace(0,1,numel(X)), X, linspace(0,1,n_n...

5 years 前 | 0

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delete elements from the given array
Try this X=[1,2,3,4,5,6]; idx = find(mod(X,2)==0); X(idx(1:end-1)) = []

5 years 前 | 0

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Comparing uneven sized matrix and delete rows which are not common
Try this code D = readmatrix('Dir.txt'); E = readmatrix('Esq.txt'); [tf, idx] = ismember(D(:, [2 5]), E(:, [2 5]), 'rows');...

5 years 前 | 1

| 已接受

已回答
How to implement load function into MatLab Coder
I haven't tried this myself, but this link shows that MATLAB provides C++ API to load .mat files: https://www.mathworks.com/help...

5 years 前 | 0

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average of first element of every cell
The exact solution depends on how your data is structured. I guess the following will work Average_Vector = mat2cell(mean(cell2...

5 years 前 | 0

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Export a structure into an excel file, with fieldnames as column headers.
Your struct contain data in row format. First convert it to column format before converting the struct to a table() my_struct; ...

5 years 前 | 0

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Read files from folder and subfolder
You can use dir() and for-loop to iterate over files in a folder to process them. This link shows a general template: https://ww...

5 years 前 | 1

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possible to use the terminal command in matlab script?
You can use system(): https://www.mathworks.com/help/matlab/ref/system.html. However, note that it does not use the same $PATH v...

5 years 前 | 0

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Multi input convolutional neural network
It is possible to design such a network in MATLAB if you have the deep learning toolbox. The easiest way is to open the Deep Net...

5 years 前 | 1

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annual Interest rate - Calculation
This is not really a MATLAB question. You can get more information about this on some forums related to economics and finance. F...

5 years 前 | 0

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Different value putting on different columns in matrix
You can use repmat() x = [2 0.25 3 1 7]; n_rows = 4; M = repmat(x, n_rows, 1) Result >> M M = 2.0000 0.2500 3...

5 years 前 | 0

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Decimal places for value stored
You can use round() x=4.21; h=0.001; f=@(x) x^3 + 8*x^2 + 23*x +3; f2_prime = (round(f(x+h),4)-2*f(x)+round(f(x-h),4))/(h^2)...

5 years 前 | 0

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Simulating empirical formulae with negative powers and 5 different variables
Yes, you can write this in MATLAB. You will need to change to valid variable name % random values Lambda = 1; T = 2; S = 0....

5 years 前 | 0

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features extraction for images with different features size in a matrix error?
You can use a cell array imds=imageDatastore('E:\dataset test','IncludeSubFolders',true,'LabelSource','foldernames'); [imds_5k...

5 years 前 | 1

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Implementing a shift register into a Matlab function
To save a variable between different iterations of MATLAB function block in Simulink, declare it as persistent. For example, if ...

5 years 前 | 0

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refer to the value of a variable referenced by the value of another variable
datetime() supports several of the operators supported by numeric types, including comparison operators. For example, check the ...

5 years 前 | 0

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Solving a system of equations in a loop efficiently
vpasolve() uses the symbolic toolbox, which is inherently slow. I guess you can use several-fold speed gain if you use a numeric...

5 years 前 | 0

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Setting maximum and minimum limits from cumsum function
for-loop might be the most efficient solution A = [1, 4, 3, 3, 1, -2, -5, 1, 2, 3, -5, -5, 1, 1, 1, 3]; B = zeros(size(A)); B...

5 years 前 | 1

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How to write exponential integral in equation?
You can use expint() function N = 1; U = 2; r = log2(exp(1))*exp(N/U)*expint(N/U) Result >> r r = 1.3315 If you have...

5 years 前 | 0

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Extracted data added into one column, how can data be assign into different columns
You can define res as matrix and fill its different columns folder = fullfile('C:','Users','muhammad','Desktop','Velocity'); f...

5 years 前 | 1

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Set title in two lines with different font sizes, Part 2
MATLAB just introduced subtitle(): https://www.mathworks.com/help/matlab/ref/subtitle.html in R2020b. You can combine it with ti...

5 years 前 | 0

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已回答
Undefined function 'sinc' for input arguments of type 'double'.
sinc() is available in the Signal processing toolbox or the Symbolic Toolbox. You can check of you have the toolbox installed by...

5 years 前 | 1

已回答
How to convert cell arrays inside a cell to matrix?
The exact solution depends on how the data is structured inside the nested cell arrays. The following code shows an example C =...

5 years 前 | 2

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Cannot run system commands from matlab macOS catalina; zsh:1: command not found: blastp
The command addpath() add the folder to MATLAB's path. ! or system() do not use MATLAB's path. You need to use setenv() to chang...

5 years 前 | 0

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已回答
Using for loops for a matrix
Just use a for-loop. For example M = rand(10, 40); for i = 1:size(M,1) figure(); plot(M(i,:)); end

5 years 前 | 0

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Curve fitting for degrees less than one
You can choose any exponent you want. For example x = linspace(1, 2); y = 2*x.^0.5 + 4.1*x.^1.2 + 3.3; ft = fit(x.', y.', '...

5 years 前 | 0

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已回答
Combine two vectors a make a Matrix
Try this C = accumarray(coln, rown, [], @(x) {[x; ones(10-numel(x),1)]}, {ones(10,1)}); M = [C{:}];

5 years 前 | 1

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已回答
How can I change the code to get a tangent in the graph
Compare following code with your code to see the mistakes syms x y f(x)=-(sin(x/2)); % Input the function and interval Df=di...

5 years 前 | 1