Answered
How to Remove Noise from Plot of Velocity Profile?
It is difficult to determine from the image what the ‘noise’ actually is. If it is significantly higher or lower in frequency c...

1 year ago | 0

Answered
QRS area calculation from ECG
II have heard of the Kors transformation matrix, however I have never used it. I just now did an Interweb search, and I was not...

1 year ago | 0

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Answered
first time use Histogram, need help
The histogram has already been created. Use the bar function to plot it — x = reshape([0.29:0.01:0.4], 2, []); y = [30 75 ...

1 year ago | 0

Answered
How to stop unwanted rows being added when constructing a matrix in a for loop
The reason is that there are the same number of ‘6’ and ‘-4’ being created in the loop. There needs to be one less ‘-4’. cle...

1 year ago | 0

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Answered
Slice of a 3D plot and projection of that function in a plane.
II’m not certain what result you want. Try this — x = linspace(-2,2,100); y = linspace(0,2,100); [X,Y] = meshgrid(x,y); R...

1 year ago | 2

Answered
error using reshape , number of elements must not change
An alternative could be to use the buffer function. For example — t_OCDMSymbol = buffer(t_ModemSymbol, num_Symbol); It wil...

1 year ago | 0

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curve fitter, the coefficients are hidden as 0.0000
It may not be possible to change the display format in the app. A better option would be to use fit and, iif necessary, set t...

1 year ago | 0

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Problems with integration using functions
With this slight change: expecX_xbasis = integral(@(x)psitimesX(x),-inf, inf,'ArrayValued',true) I was able to get it to work...

1 year ago | 0

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I need help with fixing my filtering for EMG signals
You are filtering your signals twice — once wiith the movmean call and once with thte butter call. It would likely be best to f...

1 year ago | 1

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Answered
Odd behavior using datetime
If there are more than one value that you want to convert, perhaps something like this — date = [4072016 12072016]; sdate = c...

1 year ago | 0

Answered
Error in ode45: issue with length of initial conditions vector
The ‘u’ function is either not being called correctly or not written correctly. In any event, it is miissing in the posted code...

1 year ago | 0

Answered
How do I convert table data to double to manipulate them?
There are several ways you can convert or extract table data to an array. You can use dot notation or curly brace indexing, as...

1 year ago | 21

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Answered
How to interpolate data with different sample times
‘These structures have a field for time (in datenum format) and a field for value (lets say units of Watts)’ I would create t...

1 year ago | 0

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Intro to matlab lab and I have no idea how this works
Both questions seem to me to involve element-wise operations. See the documentation section on Array vs. Matrix Operations for...

1 year ago | 0

Answered
How to get the values of the XAxis Minor Ticks (of an inset plot)
Assign the output to a variable — % create a plot x1 = linspace(0,1000); y1 = sin(2*pi*x1); plot(x1,y1) set(gca,'Fontsize'...

1 year ago | 1

Answered
How can I draw a frame around the inset plot?
Use an annotation object — x1 = linspace(0,1); x2 = linspace(3/4,1); y1 = sin(2*pi*x1); y2 = sin(2*pi*x2); figure(1) ...

1 year ago | 1

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Answered
Can gamultiobj skip over instances where the function cannot solve?
II am not certain about gamultiobj because I have very limited experience with it. However ti has been my experience when using...

1 year ago | 0

Answered
How to run a code (in series) in different folders?
Probably the easiest way would be to create ‘S4’ as a function and go from there. Example — pwd A = randi(10, 5) writemat...

1 year ago | 0

Answered
I need to innovatively produce a 140x8 matrix filled with random grades from 140 students
OPne approach is to use logiical indexing — StuGra=[60 70 80 90;50 40 30 20;20 20 20 90;10 90 10 90] Lm = StuGra < 50 ...

1 year ago | 0

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Answered
Can plot markers be specified in an array?
Both of those are possible (with the correct referencing), however I usually use a character array. Try this — marker = 'ox...

1 year ago | 1

Answered
How to locate an entire column based on one value?
The way the median is calculated may not exactly match any of the values in the matrix. The solutiion to that problem is to u...

1 year ago | 0

Answered
FILTER BIG DATA SET
Your qquestion is a bit ambiguous. If you want to match thee elements of the data you posted to elements of your matrix, one ...

1 year ago | 1

Answered
Include rows containing specific value
the value you are searching for. 0.456, may not be the exact value. Use ismembertol instead of find to search for values with...

1 year ago | 1

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Answered
Need help to removing motion (breathing?) artifact from ECG signal
There does not appear to be much noise at all, however the small baseline variation and high-frequency noise can be eliminated w...

1 year ago | 0

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Answered
How to remove black frame around the legend?
Add: legend('boxoff') after creatiing the plot. See Legend Properties for more legend options.

1 year ago | 0

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Answered
Compute the conditional variance σ2 t for each series
The garch function may be helpful, with See Also for more options and functions.

1 year ago | 0

Answered
What is the difference between + and .+ explain with example. Suppose i am adding two matrices which is best and what are their roles.
Theree is no ‘.+’ (or ‘.-’) operator. (Using them would throw an error.) The dot operator with multiplication (‘.*’), division...

1 year ago | 0

Answered
Random area of no data
I do not have your data, and I am not certain what ‘randomly’ implies.. Consider usinig the fillmissing function if the data cr...

1 year ago | 0

Answered
unknown parameters in Radon transform example
Considering the complete example — I = fitsread("solarspectra.fts"); I = rescale(I); figure imshow(I) title("Original Im...

1 year ago | 0

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Answered
I want to install an MATLAB 2024 Update 6 but it is only showing Update 2 do I have to reinstall?
You should have gotten an update notice (a red dot will appear next to the bell icon in the upper right corner of the MATLAB hom...

1 year ago | 0

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