Community Profile

photo

Star Strider


Last seen: Today Aktiv seit 2012

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)

Statistiken

All
  • Scavenger Finisher
  • Most Accepted 2023
  • Most Accepted 2022
  • Solver
  • Personal Best Downloads Level 2
  • 5-Star Galaxy Level 3
  • Most Accepted 2021
  • Revival Level 3
  • First Submission
  • Grand Master
  • 36 Month Streak
  • Thankful Level 4

Abzeichen anzeigen

Content Feed

Anzeigen nach

Beantwortet
HD-sEMG data segmentation
Use the Signal Processing Toolbox buffer function on each column individually. The number of samples to use as the second arg...

etwa 2 Stunden vor | 0

Beantwortet
How to set as preferences radiant instead of degrees?
Functions have their own defined preferences. For example polarplot, sin, cos, tan, and most others require radian angle argume...

etwa 17 Stunden vor | 0

Beantwortet
italicize only a part of the legend
Use \it to begin it an \rm to end it. If you are doing that in an sprintf call, use \\it and \\rm respectively. text(0.4, 0...

ein Tag vor | 1

| akzeptiert

Beantwortet
import data from csv file with same format of stored data in file
The data are imported and stored with their original precision. They are just displayed with 4 digits to the right of the decim...

ein Tag vor | 0

Beantwortet
How to exported formatted text and create files in array with specified variables ?
There are several ways to do this — VariantModel = compose('%c', 'A':'E') files = sprintf('''Model%c.$2k'' (or it may be .txt...

2 Tage vor | 0

Beantwortet
How to speed up pcolor and waterfall for large arrays?
The code is actually fairly fast, however the rendering takes time. If you are willing to accept compromises, the surf functi...

3 Tage vor | 0

Beantwortet
Plot contour3 of data consist x, y, phi
It would be nice to have all of it to work with. The data are already gridded, so simply reshape each column the same way to ...

3 Tage vor | 0

Beantwortet
Download MATLAB 2023b for Windows off the network
I doubt that we can provide that information here. I suggest that you Contact Support.

3 Tage vor | 0

Beantwortet
Issue with legend colours in scatter plots with tranparency set 'ON'
The legend function has at least two other undocumented outputs (those are all that I experimented with, anyway), that can chang...

4 Tage vor | 0

| akzeptiert

Beantwortet
How to add two different surface curves in a single plot?
Try this — ‘I want to add another surface to the same plot for the same data which is at z=1 and parallel to x- and y-axis.’ ...

4 Tage vor | 0

Beantwortet
connecting each data points in a bar graph with an error bar
Sure! The easiest way is probably to return the handles of the errorbar calls to get the ‘XData’, ‘YData’, ‘’YPOsitiveDelta’,...

4 Tage vor | 0

| akzeptiert

Beantwortet
Average data points of different X,Y range
You have too interpolate all the curves to a single common independent variable. Then you can average them. x1 = sort(rand(...

4 Tage vor | 0

| akzeptiert

Beantwortet
How to achieve symbolic numerical integration
Without knowing more about ‘chi’ and the characteristics of its integrated result, one option (especially if the integration lim...

5 Tage vor | 0

| akzeptiert

Beantwortet
High Frequency Noise baseline filter
Your data have broadband noise, so as might be expected, a frequency-selective filter is going to have very little effect. Prob...

6 Tage vor | 1

| akzeptiert

Beantwortet
How to interface symbolic solutions with numeric ode solvers
With an initially symbolic set of differential equations, the symbolic versions should not be part of a numerical integration. ...

6 Tage vor | 0

| akzeptiert

Beantwortet
How do I obtain the area of each contour on a contour3 plot?
I wrote some utility routines to get information from contour plots a while ago, and tweaked them for this project. The ap[proa...

7 Tage vor | 0

| akzeptiert

Beantwortet
How to plot direction of forces on a body with polar plots or similar?
I can’t figure out what you’re plotting. The data are vectors, so any sort of surface plot isn’t possible, and I don’t understa...

9 Tage vor | 1

| akzeptiert

Beantwortet
Can someone help me display the area bounded by the curve and the linear line. Pls see attached photo.
One approach — clear all; close all format shortG filename = 'GT+10-ubc-X-Axis - Static.csv'; T1 = readtable(file...

9 Tage vor | 0

| akzeptiert

Beantwortet
I want to find the least negative non positive number in a vector
Perhaps this — V = [-10 , -5 , -1 , -0.1 , 0 , 1 , 2 , 3 , 4 , 5] [Vmax,idx] = max(V(V<0)) V(idx) .

9 Tage vor | 1

| akzeptiert

Beantwortet
Plot Piecewise function graph
To do this in the Symbolic Math Toolbox, just write it essentially as in your original post — syms x f(x) = piecewise((-3*...

10 Tage vor | 0

Beantwortet
Surf plot from excel file
It would help to know what the data are, and what you want to do with the NaN values. That aside, just plot all but the firs...

11 Tage vor | 0

Beantwortet
How to Curvefit amplitude output of a spring-mass-damper system to find coefficients?
Try this — load('sampleData.mat') % whos objfcn = @(b,t) b(1) .* exp(b(2).*t) .* cos(2*pi*b(3)*t + b(4)) + b(5); Lvlm =...

11 Tage vor | 0

| akzeptiert

Beantwortet
Using string variable names for dot indexing
That approach can work, however it is necessary to put the variable name from the cell array in parentheses — varnames = {'rs...

12 Tage vor | 0

| akzeptiert

Beantwortet
Normalized graph not showing
The timeseries ‘out.Q_i_nd.Data’ is a 3D matrix. You need to use the squeeze function to remove the extra singleton dimensions. ...

12 Tage vor | 0

Beantwortet
Want to truncate an array
There are a few options, including using the vpa function in the Symbolic Math Toolbox, and to use sprintf to display the values...

12 Tage vor | 0

Beantwortet
bug in sprintf 2024a, can't use other variable and just repeating the first variable
The residue funciton produces column vectors in its output. To use sprintf with them, concatenate them in a matrix and then tra...

12 Tage vor | 0

| akzeptiert

Beantwortet
Graph lines not showing
See if the yline function will do what you want.

12 Tage vor | 1

Beantwortet
Two sets of data with two date ranges and y-axis values
Try this — x1 = 1:250; y1 = 20*sin(2*pi*x1/100) + 20 + randn(size(x1))*5; x2 = 15:250; y2 = cos(2*pi*x2/150)*60 + 150 + ...

13 Tage vor | 1

| akzeptiert

Beantwortet
Parameters identification providing derivative
The differential equation needs to be integrated in order to use . This does not appear to be as straightforward as I would hav...

13 Tage vor | 1

| akzeptiert

Mehr laden