Star Strider
Last seen: Today
14.436 total contributions since 2012Hic 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.
Star Strider's Badges
Your submissions were downloaded 30 or more times in a month
Awarded to Star Strider on 01 Nov 2019
Your submissions received 5 five star ratings
Awarded to Star Strider on 09 Oct 2019
Publish your first submission
Awarded to Star Strider on 09 Oct 2019
Reach 25000 reputation points
Awarded to Star Strider on 28 Jan 2018
Contribute at least one answer each month for 36 consecutive months
Awarded to Star Strider on 20 Jul 2017
Accept 20 answers given by other contributors
Awarded to Star Strider on 20 Jul 2017
Answer 3 questions that were unanswered for more than 30 days
Awarded to Star Strider on 20 Jul 2017
100 of your answers have been accepted
Awarded to Star Strider on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Star Strider on 20 Jul 2017
15-year anniversary Scavenger Hunt finisher badge
Awarded to Star Strider on 09 Nov 2016
Solve a problem for the first time
Awarded to Star Strider on 01 Sep 2016
change timetable variable (working day to holiday)
Try this: dd = datetime(2016,01,01):days(1):datetime(2016,12,31); % Create ‘datetime’ Array workday = ones(si...
circa 3 ore ago | 0
Multiple plots in a single X and y axis
Use the hold function. Example — x = linspace(1, 2, 250); y1 = sin(2*pi*x*5); y2 = cos(2*pi*x*7); figure plot(x, y1) ...
circa 10 ore ago | 0
How to solve a system of 4 ODEs?
Try this: syms Sh(t) Ih(t) Sm(t) Im(t) Sh0 Ih0 Sm0 Im0 T Y betah = 1000; betam = 300; gammah = 0.004; gammam = 0.06; muh ...
circa 10 ore ago | 0
Solve (a*B) + (c*D) = E without the Symbolic Toolbox
This would seem to be homework, and for homework we only give guidance and hints. I would set it up as an implicit equation (...
circa 19 ore ago | 0
how o count he number of occurences of a string in an external text file?
The function you want is probably fgetl (or related functions) rather than char. Then try: s = fgetl(fid); There are likel...
circa 20 ore ago | 0
For Loop to calculate prob of pair of values occuring
Using the unique function with the 'rows' option may help. If you want to include a tolerance if the elements are °close enou...
circa 23 ore ago | 0
Searching for a line of characters from a text file
It might be easier to use the fileread function to read the entire file in as text, then use strfind to locate the strings you w...
circa 23 ore ago | 0
ERROR: Not enough input arguments.
That error could be thrown if ‘obsData’ is a variable that should be passed to your ‘CalcMKJointProb’ function as an argument, a...
1 giorno ago | 1
| accepted
Need to make a 4D plot(3D + Colour)
The simplest option is likely the scatter3 function. plot it as: figure scatter3(x, y, z, [], t, 'filled') grid on axis e...
1 giorno ago | 0
Curve fitting for coupled monod equation
There are several options. Two are linked to here. One option: Parameter Estimation for a System of Differential Equations u...
1 giorno ago | 0
Error when using step-command
I strongly suspect that you have a variable named ‘step’. Run this is a script or your Command Window: which step -all I s...
1 giorno ago | 1
| accepted
How to solve this equation on MATLAB ? how to get the value of x
Running vpasolve two times reveals two solutions: syms x f = ((30\((0.45+0.1233*x).*(12+0.2958*x)))-(2.41*((0.57-0.11789*x)....
1 giorno ago | 0
Lotka Volterra with an additional parameter
I cannot imagine how you got that code to work at all, considering that the function you call in ode45 is not the function you p...
1 giorno ago | 0
| accepted
Plotting the Complex spectrum of a converted signal
Whatever ’P’ is, is missing, however that is of no consequence. Use the fplot function to do the plotting: figure fplot(re...
1 giorno ago | 1
Statistical Analyses Across Structures
I am not certain what you want to do. For the boxplot, try this: D = load('structure.mat'); S = D.S; for k1 = 1:numel(S) ...
2 giorni ago | 0
Get rid of array strings from readtable
Try this: Precision = [{'91,6'}; {'91,1'}; {'90,4'}]; % Create Vector T1 = table(Precision); ...
2 giorni ago | 0
plot a marker in the center of the circle?
Add this after the fill call: plot(x, y, 'kp', 'MarkerSize',15, 'MarkerFaceColor','k') Also consider separate arguments for t...
2 giorni ago | 0
| accepted
To associate a routine to only one PC
For Windows systems, one option could be to do what MathWorks does, and use the ‘C:\’ volume sedrial number: [s,cmdout] = syst...
2 giorni ago | 0
will there be any effect on the result while multiplying two signals with the same time range but different sampling rate?
They have to have the same numbers of elements, or the element-wise multiplication will throw an error. You can multiply one as...
2 giorni ago | 0
Multiple functions working together?
MATLAB is interpreting: d(3) as indexing into the third element of ‘d’. Run: which d -all from a script or your Command...
2 giorni ago | 1
| accepted
Log axis with percentage tick labels
I am not certain what you want to do. Try this: x = linspace(-2, 2, 50); % Create Data y = exp(...
2 giorni ago | 0
| accepted
Help creating a basic function
It is likely easiest to define a third variable, then set that equal to what you want: function [n] = n(x,y) z = x+y+1; syms...
2 giorni ago | 0
Genetic Algorithm Calculation steps
The ga function essentially takes a population of possible parameter vectors and ‘evolves’ them so that the set that produces th...
2 giorni ago | 0
how to read big signal data
If you have R2020b, see the documentation section on Large Files and Big Data. These appear to have been introduced in R2016b. ...
2 giorni ago | 0
How to use regexp to extract data?
Try this: tdata = {'XX__TG','GB_TH','BN__TH'}'; Out = regexp(tdata, '__|_','split') with: Out{1} Out{2} Out{3} producin...
3 giorni ago | 0
Integral with specific range (i.e t = 0:0.1:1)
Do the integration in a loop for each value of ‘t’: function lc = intensityc(t) B = 2; ac = 0.4; lc = (B/ac)*((...
3 giorni ago | 0
Solving using ODE45
I am not certain what you are doing. One problem is that you would have to iterate over ‘n’ with a loop, because otherwise t...
3 giorni ago | 0
The input command problem
Yes! Although for a string input, use the 's' option: A=input('please insert your name','s') For what it’s worth, I prefer...
3 giorni ago | 0
Loglog plot not plotting anything
The logspace call is wrong. If you want ‘f’ to go from 10 to , call it as: f = logspace(1, 9, 50); That creates a 50-eleme...
3 giorni ago | 0
odearguments error for fitting data with system of ODEs
The ‘dydt’ definition should be: dydt = [0; 0]; that would define a column vector. The differential equation runs correctrly...
3 giorni ago | 0
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)