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Star Strider


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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)

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Risposto
Unable to create Bode plot of H(s)=(s+10)/(s(s+5)^2)
The tf function acceepts ‘symbolic’ arguments. After that (and supplying the necessary multipliication operators) both work ...

circa 10 ore fa | 0

Risposto
changing values in matrix from static output to dynamic output
I don’t know if this does what you want, however it has the virtue of not throwing the size mismatch error — cap=15; crit=3; ...

circa 11 ore fa | 0

Risposto
Daily mean through long time
T1 = readtable('data.xls') % Import Data DateTime = datetime([T1{:,1:5} zeros(size(T1,1)...

circa 17 ore fa | 1

| accettato

Risposto
Help fixing different sized plots with tiled layout
This may be a problem with the tiledlayout function. Looking at the Position vectors of each of the axes, they all should hav...

1 giorno fa | 0

Risposto
Combine multiple varying length double arrays into one timetable
First, convert the datenum values to datetime arrays using the ConvertFrom='datenum' name-value pair, either reading each of the...

1 giorno fa | 0

Risposto
Solving non linear system with fsolve
It seems that fsolve stopped when it converged. R = 1.0e-20 * [ 0.1251 -0.0001 -0.0000 -0.1019 -0.0008 -0.00...

3 giorni fa | 0

Risposto
Finding point of zeta line & rootlocus
I am not certain what you are starting with, so I cannot provide an exact response. However one approach may simply be to use i...

4 giorni fa | 0

Risposto
How to randomly select the datapoints in a vector based on percentage for each group?
I’m not certain iif you want to apportion them as they exist in the original vector, or if you want to apportion them by ascendi...

7 giorni fa | 0

Risposto
How to simplify output from solve
I can’t be certain that this is a significant improvement, however it is the best I can do with your data — % Define symbolic ...

8 giorni fa | 0

Risposto
How can i make optimization by using genetic algorithm to minimize error between desired and simulated force?
Your fitness function should be something like this: fitness = @(b) norm(dependent_variable - model_function(b,independent_var...

8 giorni fa | 0

Risposto
Parfor random numbers are not quite random
Sequences generated by computers are called ‘pseudorandom’ because they are just that. They are generated cyclically. See Mo...

9 giorni fa | 0

Risposto
How to save contourf data and not plot it for running efficiency?
Use gcf to return the figure handle, then set the visibility to 'off'. Example — [X,Y,Z] = peaks(50); figure [c,hc] = c...

9 giorni fa | 0

| accettato

Risposto
The method of how to calculate the FWHM.
A different approach — x = linspace(0, 10); y = exp(-(x-5).^2*0.25); ymin = min(y) [ymax,idx] = max(y - ymin) halfmax ...

11 giorni fa | 0

Risposto
How can I disable the 'select a website' pop-up every time I open the MATLAB help documentation?
I believe this has recently been resolved. See this Answer.

12 giorni fa | 0

Risposto
generate a 3d scatter plot with z-support lines / pin plot / needle plot ...
See if the stem3 function will do what you want. You will probably still have to use a loop of you want the individual stems ...

12 giorni fa | 1

| accettato

Risposto
How can I shade an interval in a calculus function with the area() function?
I prefer the patch function, simply because I have more experience with it. Try this — x = linspace(0, 1); y = 1 + 0.5*sin...

12 giorni fa | 0

| accettato

Risposto
How can I adjust the settings so that the following heatmap retains most of the details?
The clim approach could of course work. Another option that might work is to use the logarithms of the ‘z’ values. (The valu...

15 giorni fa | 0

Risposto
Problems with creating a data table
You probably do not have to do any of those data manipulations. Just read the file eand plot the results — T1 = readtable('...

16 giorni fa | 0

Risposto
morse code translator not outputting sound
When I ran your code with an appropriate argument, I got: Unrecognized function or variable 'morsecode2'. Beyond that, I juat...

16 giorni fa | 0

Risposto
How to plot an array of 4 columns?
I wrote this to solve a similar problem. The original problem was to create a surf plot to match a scatter plot. Try this — ...

17 giorni fa | 0

| accettato

Risposto
I keep on getting the error conversion to double from table is not possibl
I am not certain that I understand what you are doing. It would probably help to upload the matrix (text or Excel file) to he...

17 giorni fa | 0

Risposto
How to use Wilcoxon signed-rank test and correct for multiple comparisons?
The signed-rank test is for paired studies (for example the same group before and after an intervention) and ranksum for unpaire...

17 giorni fa | 1

| accettato

Risposto
cannot find function even it is in path
I am not certain what your problem is. In my startup.m file, I have these assignments at the beginning: pathmat = path; My...

17 giorni fa | 0

Risposto
How to color a contour of two curves?
I am not certain what you want. Try this — % Diagramme de coexistence avec des contours colorés % clc; clear; close all; ...

17 giorni fa | 0

| accettato

Risposto
How to correct for multiple comparisons when using fitlm function?
None of the linear regression coefficients are even remotely significant (other than the Intercept). A linear regression is l...

17 giorni fa | 1

| accettato

Risposto
extract fig into surf(x,y,z)
One way is tto enlarge the y-values to a matrix using repmat and then offset them by adding a different constant to each column ...

18 giorni fa | 0

Risposto
How to use "predict" to get x value for a given y value?
I generally use the interp1 function to return x-values given y-values. That generally goes something like this — x = lins...

18 giorni fa | 0

Risposto
I need help converting this 3d plot to a surface
Plotting it as a surface will probably require creating matrices from the vectors. Just looking at the images, that will probab...

18 giorni fa | 0

Risposto
How to read each column of a .BIN file as a different variable
I suggest using ‘ArduPilot Log Viewer’ once to see what the format of the file should look like (and check to be certain that ...

18 giorni fa | 0

| accettato

Risposto
isolate function is not providing multiple solutions to a polynomial problem?
Apparently isolate does not, however solve does — syms x a b c eqn = a*x^2 + b*x + c == 0; xSol = solve(eqn, x) pretty(xS...

20 giorni fa | 0

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