Star Strider

Last seen: Today | 2012 年からアクティブ

Followers: 28 Following: 0

メッセージ

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)

統計

All

バッジを表示

Feeds

回答済み
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); ...

約9時間前 | 0

| 採用済み

回答済み
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(...

1日前 | 0

回答済み
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...

4日前 | 0

回答済み
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 — ...

5日前 | 0

| 採用済み

回答済み
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...

5日前 | 0

| 採用済み

回答済み
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...

6日前 | 0

| 採用済み

回答済み
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...

6日前 | 0

回答済み
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...

6日前 | 0

回答済み
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...

6日前 | 0

回答済み
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...

7日前 | 0

回答済み
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 — ...

8日前 | 0

回答済み
Plot 3D Meshgrid
See thee documentation sections in Volume Visualization.

8日前 | 0

回答済み
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...

9日前 | 0

| 採用済み

回答済み
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...

10日前 | 0

| 採用済み

回答済み
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...

11日前 | 0

回答済み
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...

11日前 | 0

| 採用済み

回答済み
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 ...

11日前 | 0

回答済み
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...

11日前 | 0

| 採用済み

回答済み
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...

12日前 | 2

回答済み
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...

12日前 | 0

回答済み
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...

12日前 | 0

回答済み
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...

12日前 | 0

回答済み
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 ...

12日前 | 0

回答済み
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...

12日前 | 1

| 採用済み

回答済み
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...

13日前 | 0

回答済み
Averaging non-aligned time-series arrays
Try something like this — time1 = [1 2 3 4]; data1 = [1 1 1 1]; time2 = [3 4 5]; data2 = [3 3 3]; TT1 = timetable(seconds...

13日前 | 0

回答済み
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...

13日前 | 0

回答済み
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...

13日前 | 21

| 採用済み

回答済み
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...

14日前 | 0

回答済み
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...

14日前 | 0

さらに読み込む

Star Strider

統計

Community

MATLAB Answers

MATLAB Answers

Cody

File Exchange

File Exchange

MATLAB Answers

MATLAB Answers

File Exchange

MATLAB Answers

MATLAB Answers

MATLAB Answers

Feeds