# Star Strider

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

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**Content Feed**

How to combine the matrices ?

One approach — A = rand(293,13); B = rand(392,13); C = rand(480,13); ABC = cat(1,A,B,C) .

2 hours ago | 0

How to use FFTshift to produce a 0 frequency centered plot

The frequencies are not centred because of the way ‘fshift’ is calculated. Try this version — fs = 250; t = (0:1/fs:(0.1-....

2 hours ago | 0

The transfer function of a small position Sensor

If you actually want the transfer function, use the System Identification Toolbox functions — Displacement_d_mm = [0, 0.08, 0....

3 hours ago | 0

PARAMETER estimation of kinetic and adsorbtion constant of langmuir hinshelwood haugen watson model

I have no idea what ‘Model E’ is. I assume that it was coded correctly, however even at that, I cannot get the data to fit it, ...

4 hours ago | 0

rotating the plot axis

I am not certain what you intend by ‘rotate the axis’. It is a(4x4) matrix, so if you want to plot the transpose, just plot the...

5 hours ago | 0

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Help Using Solve Function

Try something like this — Gamma=1.4 Mu_2=MuM(2.2, Gamma,10); M_2 = FindM_2(Mu_2,Gamma) function [M_2]=FindM_2(Mu_2,Gamm...

8 hours ago | 0

How to make syms functions have specific values

One approach — syms c F(x) x dF = diff(F) F(x) = dsolve(dF == c, F(0)==0) c = solve(diff(F)==1,c) % ...

20 hours ago | 0

Plot specific rows with an defined offset

One approach — f = 0:49; Spectra = rand(10, 50); Scores = randn(10,1); Offset = Scores; Offset((Offset>-0.5) & (Offset<0...

23 hours ago | 0

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How to solve surface plot viewing issue?

Using an axes call could make the axis limits a bit more obvious, and to call attention to a specific point, one option is to d...

23 hours ago | 0

Taking elements of matrix into coefficient of a function

Try this — A = [randi(9) randi(9) randi(9)] x = 1:1e-2:2; y = polyval(flip(A), x); figure plot...

1 day ago | 0

how to normalize two graphs to each other?

Try something like this — D = randn(1,500); figure hfh = histfit(D); hfh(2).YData = hfh(2).YData * max(hfh(1).YData)/ma...

1 day ago | 0

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how to obtain the bode plot of trans function in matlab?

See if using the bode (or bodeplot) funciton will do what you want. .

1 day ago | 0

how to obtain Nyquist plots ?

See if using the nyquist function will do what you want. .

1 day ago | 0

How to obtain a particular value from set of matrix

If they are not already in some sort of array themselves, it would first be necessary to put them in one. Then extracting the e...

1 day ago | 0

FFT from a .CSV not giving the correct results

It works correctly. However it is also taking the Fourier ttransform of the time vector, so restricting it to only the data vec...

1 day ago | 1

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How to remove legend entries from saved .fig file?

One approach — figure; x = linspace(0,pi); y1 = cos(x); p1 = plot(x,y1); hold on y2 = cos(2*x); p2 = plot(x,y2); y3...

1 day ago | 1

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Using the Rigol 5000 series in Matlab

The only reference I could find for it is Overview - Using MATLAB Software with Rigol Instruments and apparently the Instrument ...

1 day ago | 0

how to plot a matrix values in 3d plot

It would be nice to have the ‘z’ matrix as well, however in its absence, I will create one. x=[0.2;0.5;0.8;1;1.5]; y=[0;0.2;...

2 days ago | 0

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Select a record from a table where an exact value is not provided

This is a bit ambiguous. If the simulation is a system of differential equations, the time vector (‘tspan’ in the documentati...

2 days ago | 0

Error in bvp4c

The symbolic Math Toolbox disagrees with you with respecty to ‘bvpfun’, however I don’t know if that was the problem. (I use it...

3 days ago | 0

How can I use xticks with a bigger range of values towards x axis

Perhaps semilogx would do what you want. A different way to do the same thing — set(gca, 'XScale','log') xlim([1e+3 1e...

3 days ago | 0

How to do math to entirety of a vector?

Creating it as an anonymolus function and using it with arrayfun and cell2mat is an option — selectIndicies = @(selectSpaces) ...

3 days ago | 0

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How to write a program to find the Factorial for a series of number

Take advantage of MATLAB’s vectorisation capability — N = 10; ff = (1:N) ./ cumprod(1:N) ffsum = sum(ff) Make appropria...

3 days ago | 0

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Remove outliesrs (matlab2016b)

If you have the Signal Processing Toolbox, the hampel function (introduced in R2015b) could do what you want. Check your own R2...

3 days ago | 0

I need to find the probability of an event happening given the population mean, a sample size and how many times I need it to happen

The question as stated actually doesn’t make much sense, because ‘cases’ should have some sort of probability distribution. T...

3 days ago | 0

How to convert day information to a number?

Experiment with something like this — daynr = @(x) find(strcmp(x, {'Mon','Tue','Wed','Thu','Fri','Sat','sun'})); nr = day...

4 days ago | 0

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Reading data of nonstandard format

I use textscan for these problems. Try this — fidi = fopen('reconstructed[1].txt','rt') k1 = 1; while ~feof(fidi) HL...

4 days ago | 0

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How to draw a line between two points on a graph?

I recognise that code! I added this plot call to the others in the loop: plot([minx maxx], [0 0], '-k', 'LineWidth',1) ...

4 days ago | 0

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Restore old editor in R2021b?

Set the fonts by clicking on Preferences in the ENVIRONMENT section of the MATLAB toolbar (at the top of the window in the HOME ...

4 days ago | 0

Help Plotting Diffusion Equation in MatLab

One option is to stack them in the same axes — x = linspace(-200, 200); v = logspace(-2, 2, 10); y = exp(-(x./v(:)).^2); ...

5 days ago | 0