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Euler Method for vector function
It appears to me that you want this: clear clc close all % step size h = 0.1; % final time Tf = 5; x = 0:h:Tf; yexact...

約3年前 | 0

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Matlab Code to calculate total energy consumed in given time.
Energy is just an integral of power over time. You can use cumtrapz function. This is probably what you need: A = xlsread('X_F...

約3年前 | 1

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Basic Matlab to python question
This is what you probably want: import numpy as np arr = np.array([1, 2, 3, 4, 5]) arr2 = np.arange(0,10,2) print(arr) ...

約3年前 | 0

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Unexpected output from simplify()
It is probably because you he a division by vc in your expression. .../(vc^2)... This means simplified expression is valid onl...

約3年前 | 0

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How to change element position in matrix?
Please use Matlab built in function called: circshift for example: A=[1;1;0;0;1;0;1] B = circshift(A, [-1, -1])

約3年前 | 0

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How to rotate a vector
If you want to reverse elements, then just use flip function. v = 1:10 v_f = flip(v)

約3年前 | 1

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How to name axes from the script
I would do ike this: x = linspace(0, 50); y = sin(x); plot(x,y); input_x = input('Enter name for x label:','s'); input_y = ...

約3年前 | 1

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Calculate number appearance within a range
Perhaps this code snippet will help you: load TT classes = [1 2 10 20 50 100]; tol = 1e-10; res = zeros(size(diff(classes)...

約3年前 | 0

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How to remove all for-loops with vectorization?
This code should give you a pretty good idea how to do this: clear clc u=[35 75 -35 -75 0.3 0.5]; b=u; K=length(u)/3;% C...

約3年前 | 0

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Defining and plotting a piecewise function of irregular interval
You can try something like this: syms x %makes x a symbolic variable f = piecewise(x>=0 & x<1/4, 1, x>=1/4 & x<1/2, 4*x.^2, x>...

約3年前 | 0

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How do I create a function, save it, then run feral on it?
I understand this is homework, but you need to know that feval is not really necessary. Evan matlab suggest that. You can use t...

約3年前 | 1

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HOW to convert negative integer to bit in Matlab?
Wel, you can use something like this (assuming you're working strictly with integers): s = -10 b = dec2bin(typecast(int8(s),'u...

約3年前 | 0

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Depth first search algorithm
Use built in function: https://www.mathworks.com/help/matlab/ref/graph.dfsearch.html

約3年前 | 1

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2 axis plotting with different markers
If you want to have legend only on points 'o' in both red and blue lines, I would do this: %plotting % I want to plot two axi...

約3年前 | 0

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Need to implement a bandpass filter on the ECG signal using matlab
Please have a look at the file exchange. For example: https://www.mathworks.com/matlabcentral/fileexchange/49822-open_ecg-ecg...

約3年前 | 0

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2 axis plotting with different markers
I would do somthing like this: %plotting % I want to plot two axis with different markers for lambda_r (hollow marker)and alp...

約3年前 | 0

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Function inside a for loop
For loop will be executed in a matter of milliseconds. On the other hand when you call function once at a time, there is a signi...

約3年前 | 1

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Precision and indices must be positive integers
The problem is in the line: kd = (Ppeak-0)/(times(end) - t); times is a built in Matlab function for element wise multiplicat...

約3年前 | 0

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What is wrong with my code?
In the line inside the function: term(k) = pi/(12+ k^b); but you didn't send b as an input parameter nor did you define it ins...

約3年前 | 0

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I can not use i j k as a sym type what should I do
This is how I would solve this problem: c1 = test() function c1 = test() syms x y z k real i = sym('i'); j = sy...

約3年前 | 0

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Is this proper use of backward difference approxiamation?
The difference can be best seen on an example: h = 0.1; x = 0:h:6; F = sin(x); x_fw = x(1:end-1); dF_fw=(F(2:end)-F(1:end...

約3年前 | 0

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How to take first and second order derivative of discrete data?
Hello Ying, you wrote that second derivative of signal 2 looks weird. I assume that is ddCl (also based on how plot looks like)...

約3年前 | 1

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How to calculate differential of scattered data?
Okay, here's what I do in order to avoid calculating derivation on the discrete data, especially when I know that they represent...

約3年前 | 0

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Please help me...
I can only imagine that you're trying to do something like this: n = 3; A = randn(n); A = A'*A; [V, D] = eig(A); X = ze...

約3年前 | 0

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Please help me...
First of all, you need to read this: https://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-ans...

約3年前 | 1

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How can I call my function myfourier again with inputs specified and not entered from the user?
If I understood your question correctly, sometimes you want to call a function when user needs to enter inputs, and sometimes yo...

約3年前 | 0

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Transfer function to filter signal Simulink to Matlab
This shouldn't be a big problem in Matlab code. The most work is in defining input signal. Here's one example: close all clc ...

約3年前 | 0

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A table of y versus t every 1 second.
I would do somthing like this: % assuming t and y are row vectors M = [t.',y.']; T = array2table(M); T.Properties.VariableNa...

約3年前 | 0

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How to corrplot without displaying histograms?
Please execute this script. I think it will give you pretty good idea what to do next. clear close all load Data_Canada corr...

約3年前 | 0

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3d plot with x value being constant
p5x= p1x*ones(z);

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