Answered
Change datetime display format
It is possible. It just takes some coding gymnastics: tj = 2.456870501842000e+06; mtime = datetime(tj,'ConvertFrom','juliand...

4 Tage ago | 1

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Answered
how to get a cdf plot of my data
Try this: [f,x,flo,fup] = ecdf(fitness); figure loglog(x, f) hold on plot(x, [flo fup], '--r') hold off grid legend('...

4 Tage ago | 0

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Answered
syms 0-by-1
Ther problem is that ‘eqn’ evaluates to: eqn = 5863/20 == 923 so there are no variables in it to solve for.

4 Tage ago | 0

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Displaying random numbers as a graph
One approach is to use the inpolygon function: x = linspace(0, 10); y = exp(-(x-5).^2)*0.2; r = rand(1000,2).*[10 0.25]; [i...

4 Tage ago | 1

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Answered
Creating a Filter and applying it
See: Realize or Apply the Filter to Input Data

4 Tage ago | 1

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Answered
Unit of FFT in matlab
The fft function does not change the units of the time-domain argument it is given. The fft function produces a double-sided ...

4 Tage ago | 0

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Predictions for stepwise regression model
No predict function is defined for stepwisefit. One is defined for stepwiselm: m = stepwiselm(matrix , Y) prediction1 = pr...

5 Tage ago | 0

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Answered
Create a row vector of the diagonal elements from matrix.
Meet the diag function!

5 Tage ago | 0

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Answered
How do you use values from an array as serial numbers to extract values from a different array?
It is not possible to reference ‘row 0’ since MATLAB subscripts begin at 1. I am not certain what you want, so see if this sh...

5 Tage ago | 0

Answered
How to mix multiple audio signals in Matlab?
It is somewhat difficult to follow your code (and I cannot run it since my version of MATLAB can only run actual code, not image...

5 Tage ago | 0

Answered
Residual values for a linear regression fit
I would do something like this: x = [1,1,2,2,3,4,4,6]'; y = [8,1,1,2,2,3,4,1]'; xv = x; yv = y; for k = 1:numel(x) ...

5 Tage ago | 0

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Answered
ode45 failing but other solvers work fine
Run this from your Command Window or a script: which ode45 -all You should only get: C:\Program Files\MATLAB\R2020b\toolbox...

6 Tage ago | 0

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Answered
How can i visualize ecg contain 12 leads in 12 different figures
This is the standard format for EKG record display: EKGD = load('temp.mat'); EKG = EKGD.signal; Leadc = {'I','II','III','a...

6 Tage ago | 2

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Answered
Use vectors to index an 2D array
Use the sub2ind function to create linear indices from the subscripts: X = [1 2 3 4]; Y = [4 3 2 1]; A = zeros(4); Lidx =...

6 Tage ago | 1

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Answered
Plot range of values in a bar graph
I was not certain what result you wanted when I replied to your Comment to Plot range of values as bars. I gave a sort of gener...

6 Tage ago | 0

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How to find x-values when y-function equals a set value?
Try this: x = linspace(0.54, 0.61); % Create Data y = exp(-(x-0.58).^2*1E+4); ...

6 Tage ago | 0

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Answered
changing sampling rate of an audio
Import the file, then use the Signal Processing Toolbox resample function to resample it to a different sampling frequency.

6 Tage ago | 0

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Converting Frequency domain to time domain
‘How do I convert it into Acceleration vs time data using ifft function.’ Thet depends entirely on what the data are. If you...

6 Tage ago | 0

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Trying to Plot feedback system
The image is a bit difficult to read. The error appears to be thrown with the step call. This may likely be due to your having...

6 Tage ago | 0

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raise power to power in title
Try this (using LaTeX): figure plot(rand(50,1), rand(50,1), 'p') axis([0 1 0 1]) title('$y = x \times e^{- \frac{x^2}{2...

6 Tage ago | 1

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Answered
Hi. I have problems with transfer function and Laplace
Control System Toolbox objects and Symbolic Math Toolbox objects are inherently incompatible. It takes a bit of effort to get t...

7 Tage ago | 0

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Answered
finding rms of fundamental and thd using csv file
Use the Signal Processing Toolbox functions thd and rms. The Fourier transform plot illustrates the harmonics, so you can use...

7 Tage ago | 1

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Answered
Assigning value to a variable.
Put simply: x(1)=1; % ‘x’ is an array, with the first element assigned to ‘1’ y(1)=1; ...

7 Tage ago | 0

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Answered
How to correspond line colors with histogram
The FaceColor property of the bars is 'auto', so if you want the colors to be the same, it is necessary to define them: out = ...

7 Tage ago | 0

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Answered
Filtered signal plot not showing up
It’s necessary for you to understand the problem with your indexing. This: n = 200; k = 500:(n-1) produces: k = 1×0 ...

7 Tage ago | 0

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Answered
Local Maximums of a plot
The islocalmax function could be helpful here. The Signal Processing Toolbox has findpeaks.

7 Tage ago | 1

Answered
Plotting graph with only one point (x,y) and slope
A bit of algebra (courtesy of the Symbolic Math Toolbox to prevent stupid errors, that I will let you re-derive if you wish) mak...

7 Tage ago | 0

Answered
How to graph this 'for' loop
Try something like this (with the correct variable values): T_inf = eps; % Not ...

7 Tage ago | 1

Answered
Vectorization and a strange result
Your ‘mytest.mat’ file contains: fx_1: [1×150 double] beta: [1×25 double] t: [1×150 double] con...

7 Tage ago | 1

Answered
changing y axes on a loglog graph
Add these linmes at the end of your posted code: ylim([1 1E+3]) ytk = yticks; yticklabels(ytk) so the full code is now: x...

8 Tage ago | 0