Star Strider

Last seen: Today | Actif depuis 2012

Followers: 28 Following: 0

Message

Hic sunt dracones! PROFESSIONAL: Physician (M.D.): Diplomate of the American Board of Internal Medicine; M.Sc. Biomedical Engineering: Instrumentation, Signal Processing, Control, System Identification, Parameter Estimation NON-PROFESSIONAL: Amateur Extra Class Amateur Radio Operator; Private Pilot, Airplane Single Engine Land, Instrument Rating Airplane; Gamer NOTE: I do not respond to emails or personal messages, unless they are about my File Exchange contributions. Time Zone: UTC-7 (Standard); UTC-6 (Daylight Savings/Summer)

Statistiques

All

Afficher les badges

Feeds

Réponse apportée
How do I manually set color of individual datapoints of figure ?
Stiill lacking your data, I am guessing at the problem and proposing a solution. Try this — x = (0:14).'; ...

environ une heure il y a | 0

Réponse apportée
Turn tables in a loop into a single cell array
Perhaps something like this — for k = 1:numel(OPALData) F = fullfile(OPALData(k).folder,OPALData(k).name); % I...

environ 13 heures il y a | 0

| A accepté

Réponse apportée
Indexing in a loop using fileparts
One option is to use the extractBetween funciton — filename.name(1) = "X000_104520.txt"; filename.name(2) = "X001_122004.txt"...

environ 19 heures il y a | 1

Réponse apportée
fprintf not printing to command window when asking for input.
When I run your input line, it prints this to my Command Window: Enter the number of the song you wish to play --> and then...

environ 20 heures il y a | 0

Réponse apportée
How do I manually set color of individual datapoints of figure ?
One option is to specify a colormap and then index into it — cm = turbo(5); Fs = 1000; t = linspace(0, 301, 302).'/Fs; E = ...

environ 20 heures il y a | 0

Réponse apportée
Finding peaks in a very noisy signal
Your signals have broadband noiise, so a frequency-selective filter is not going to apply here. The Savitzky-Golay filter (or w...

environ 22 heures il y a | 0

Réponse apportée
Loop for reading and extracting data from a single line of multiple text files.
I generally do something like this — files = dir('*.txt'); for k = 1:numel(files) txt = fileread(files(k).name); ...

1 jour il y a | 0

| A accepté

Réponse apportée
Monthly to annual totals
This is straightforward with the accumarray function — Y = 1960:1999; M = 1:12; Data = [[repmat(M(:), numel(Y), 1) repelem(Y(...

3 jours il y a | 0

Réponse apportée
Trouble Plotting Basic Function
It appears to be coded correctly. How is it supposed to appear? X = -4:0.01:10; Y = X.^3 - (sin(X)) - (exp(X)); figure...

6 jours il y a | 0

Réponse apportée
How to search and find array in array?
The ismember function is doing exactly what it should. You need to examine ‘bigArray’ tto understand its output. Try this — ...

6 jours il y a | 0

| A accepté

Réponse apportée
Update the number of columns needed for my times table
It would heelp to have your .csv file and a description of what you want to do. Also, it might be easiier to do this in a table...

6 jours il y a | 0

| A accepté

Réponse apportée
Segregating an EMG signal based on activation
It would help to ahve the data. Lacking it, I’ll create some. I generally approach ensemble problems such as yours like this...

7 jours il y a | 0

| A accepté

Réponse apportée
Phase Plots Dropping when quadrant changes
Use either the angle function or atan2d for this. The angle function returns the angle of a complex variable in radians, so you...

7 jours il y a | 0

Réponse apportée
How to remove border from MATLAB figure
It might be easier to do that when you first create the spectrogram. Try something like this — Fs = 1000; L = 10; t = li...

8 jours il y a | 0

Réponse apportée
Function file does not work
In R2024a, you can put the function anywhere in your code (although except for anonymous functions, I usually still put all of t...

8 jours il y a | 0

Réponse apportée
How to plot a 3D contour plot when the contours is a forth vector
Use the contour3 function. If ‘A’ is a list of the contour levels, all the MATLAB contour functions accommodate defining the c...

9 jours il y a | 0

Réponse apportée
Customizing plots that are matrices of column vectors?
It is reelatively straightforward to change the markers (and other propeerties) after plotting. Try something like this — ...

9 jours il y a | 0

Réponse apportée
Plot 3D Meshgrid
See thee documentation sections in Volume Visualization.

9 jours il y a | 0

Réponse apportée
Best fit line for scatter data along y=x line
What sort of regression would you want for the volume in the second figure? LD1= load('uu.mat'); uu = LD1.uu; uu_size = siz...

11 jours il y a | 0

| A accepté

Réponse apportée
Filtering white noise signal from acceleration data
The best way to deal with broadband noise is either to use wavelet denoiising or the Savitzky-Golay filter (the sgolayfilt funct...

12 jours il y a | 0

| A accepté

Réponse apportée
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...

12 jours il y a | 0

Réponse apportée
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...

13 jours il y a | 0

| A accepté

Réponse apportée
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 ...

13 jours il y a | 0

Réponse apportée
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...

13 jours il y a | 0

| A accepté

Réponse apportée
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...

13 jours il y a | 2

Réponse apportée
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...

13 jours il y a | 0

Réponse apportée
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...

13 jours il y a | 0

Réponse apportée
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...

13 jours il y a | 0

Réponse apportée
unable to read GR-401 gps data with gpsdev or gpsReceiver
I did an Interweb search, however I was not able to finid anything specific about your Navisys GR-401 and MATLAB, so apparently ...

13 jours il y a | 0

Réponse apportée
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...

14 jours il y a | 1

| A accepté

Charger plus