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Askic V


Last seen: Today Active since 2022

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Answered
ode45 returns a vector of length 0
I see few problems. First have a look at this suggestion: Coefficient alfa is huge, so change in tempearture is very fast, ther...

5 hours ago | 1

| accepted

Answered
Str2double gives NaN
I would also like to suggest this solution: X = "3.716,3.711,3.719,3.714,3.714,3.711,3.722,3.712,3.715,3.715,3.717,3.721,3.713,...

1 day ago | 1

Answered
Str2double gives NaN
Try this: X = "3.716,3.711,3.719,3.714,3.714,3.711,3.722,3.712,3.715,3.715,3.717,3.721,3.713,3.714,0.000"; newStr = split(X,',...

1 day ago | 2

Answered
How to find first 10 minimum values in a table array?
Another solution is to use readcell function instead of read table. T = readcell('https://in.mathworks.com/matlabcentral/ans...

1 day ago | 0

Answered
Why do I get "Array indices must be positive integers or logical values" error?
You asked why, and the answer is because of this line: Vc=x(y+z-u-rr) here, x is considered an array and y+z-u-rr is an index....

1 day ago | 0

Answered
how can we decreases the length of the quiver? so that the tail get smaller but head shouldn't move.
I would do with a different approcah to have more fexibility and control over how vectors would look like. Here is a sample cod...

4 days ago | 0

Answered
I want to find out how to get the angles between the centroids
Hello Don, I think you might find this example useful: close all clc clear P1 = [231; 84]; P2 = [297; 284]; P3 = [544; 25...

5 days ago | 1

Answered
How to write this thetta fuction in Matlab? I have an example code in Python
Ok, without going into too much details, let's say you have the following Python functions that you need to rewrite in Matlab. ...

5 days ago | 1

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Answered
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...

5 days ago | 0

Answered
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...

6 days ago | 1

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Answered
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) ...

6 days ago | 0

Answered
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...

6 days ago | 0

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Answered
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])

7 days ago | 0

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

8 days ago | 1

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Answered
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 = ...

8 days ago | 1

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Answered
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)...

12 days ago | 0

Answered
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...

13 days ago | 0

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Answered
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>...

13 days ago | 0

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Answered
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...

13 days ago | 1

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Answered
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...

25 days ago | 0

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

1 month ago | 1

Answered
2 axis plot with different markers connected with lines
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...

1 month ago | 0

Answered
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...

1 month ago | 0

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

1 month ago | 0

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Answered
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...

2 months ago | 1

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Answered
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...

2 months ago | 0

Answered
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...

2 months ago | 0

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Answered
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...

2 months ago | 0

Answered
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...

2 months ago | 0

Answered
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)...

2 months ago | 0

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