Answered
Zero crossings and separation of data
Use the envelope function to define the ‘outline’ of the upper portion of the signal (and the lower portion if you want that), t...

10 days ago | 0

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Answered
Issue with velocity signal from measurement
First, if you want to eliminate noise, use a lowpass filter, and if you have a significant amount of baseline offset or baseline...

10 days ago | 0

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Answered
ode with varying constant
Interpolating a time-domain vector in a differential equation is essentially described in the ode45 (and other solvers) document...

10 days ago | 0

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plotting 2 graphs on the same axes
Use the hold function.

10 days ago | 1

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Answered
Calculate shifts/translation between two curves
The blue curve is not ‘shifting’. It has a different scale with respect to the independent variable than the purple curve. The...

10 days ago | 0

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Answered
Index exceeds the number of array elements (10).
In this line: A(i)=(x(i+3)-x(i))*((y(i)+3*y(i+1)+3*y(i+2)+y(i+3))/8); ↑ ← HE...

10 days ago | 0

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Unable to perform assignment because the left side is 1-by-3 and the right side is 1-by-2
I’m not certain what you’re doing with that line. The standard way of coding it (to put errorbar objects or text objects at t...

10 days ago | 0

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Answered
Why does my code only come out with one result?
Call it as: [siftedData, siftedMean, siftedStd, siftedNorm] = project2(rawData, categories, selectedCategory) and all the ou...

11 days ago | 0

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Answered
How to add error bars to a bar graph
See: error bars in bar plot with categories for one example.

11 days ago | 0

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Answered
How do I use an unusual base in a semilogx plot?
See if this works for what you want to do: x = 1:5; y = 1.85.^x; figure subplot(2,1,1) semilogx(x, y) ...

11 days ago | 0

Answered
converting abbreviation of months to numerical value
Another approach: mnth_nr = @(mth) find(strcmpi(mth, {'jan','feb','mar','apr','may','jun','jul','aug','sep','oct','nov','dec'}...

11 days ago | 0

Answered
How to get upper and lower bounds values from an empirical cumulative distribution?
Using the prctile funciton on ‘cdf_y’ may work to calculate the percentiles (that appear to be what you want). To get the appro...

11 days ago | 1

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Answered
Plot not showing line fully
There may be some problem with the graphics rendering. See if an update to your graphics driver is available. Otherwise, add...

11 days ago | 0

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Answered
Complex number to polar form
Use the abs (magnitude) and angle (radian phase angle) functions. The phasor notation for it would be: phasor = [abs(z) ang...

11 days ago | 0

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Understanding the FFT documentation
Your understanding essentially equates to my understanding of fft. It produces a ‘two-sided’ Fourier transform with the first v...

11 days ago | 0

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Answered
Making graph at the every for loop
First, if you are defining each plot in a separate figure, remove the figure call in the loop and put it before the loop. Jus...

11 days ago | 0

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How do I add variables into a string within a table?
The only option appears to be to turn the string variable into a char array first: str = "0001336363"; strc = char(str); Out...

11 days ago | 0

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Answered
Computing findpeaks along 3-Dimensional matrix
I am guessing here, since I do not have your data. Since findpeaks is going to return vectors for the peaks, locations (and oth...

12 days ago | 0

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Fill in a Polar Scatter Plot
Do everything in Cartesian coordinates, although defining the coordinates in terms of and . Then, use pol2cart to create them ...

12 days ago | 0

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finding the exact points of Zero crossing using interpolation method
You are plotting the values of the data at the indices that ‘zci’ returns, not the interpolated aero-crossings. It would be b...

12 days ago | 0

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Answered
how do i find minimum value of function with matlab?
I agree with you that using the diff function is the appropriate way to begin.

12 days ago | 0

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Can't plot polyfit
The polyfit function also needs to know what degree of polynomial you want to fit: p = polyfit(x,y,n) where ‘n’ is the degree...

12 days ago | 0

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Answered
Matlab code and filterDesigner give different plots for the same setting of Chebyshev II bandpass filter?
I suspect that filterDesigner uses the second-order-section implementation of the filter. You should, as well. Change: [...

12 days ago | 0

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Answered
How to find the width of plotted graph at selected Y-axis level?
Try this: lambda = linspace(0.4, 0.6); % Wavelength Vector s = sinc(((0.47:0.02:0....

12 days ago | 1

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Answered
how to get the value of x, from this equation: 0.2exp(x)-x^(0.25) = 0
I do not understand what the problem is: fun = @(x) (0.2*exp(x)-x.^(0.25)); x0 = [1.5,0]; x = fsolve(fun,x0); xv = linspac...

13 days ago | 0

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2 Scenario Legend Setup
See the Line Properties documentation on DisplayName. That might do what you want.

13 days ago | 0

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

13 days ago | 1

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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('...

13 days ago | 0

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Answered
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...

14 days ago | 1

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

14 days ago | 1

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