Community Profile # Star Strider

Last seen: Today 2012 年からアクティブ

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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I have a problem in performing a loop calculation
I cannot understand exactly what you want to do or what the logic vector ‘d’ does. If you simply want to get the RMS value of...

37分 前 | 0

Find Average Peaks Function
The mean value of the function between any two peaks would be — x = linspace(0, 10, 250).'; filt_RLE = 50 * sin(2*pi*x*1.5) ....

If statement for 2 different variables.
Try this — x = @(i,j) (10 / pi + j ./ sin(i-1)) .* cos(j .* (i-1) * pi); i = 2:6; j = 1:7; [I,J] = ndgrid(i,j); Iv = I(:...

Plotting HSP in Matlab
Use the hold function — [x,y,z] = sphere; radius = 7.1; x = x * radius; y = y * radius; z = z * radius...

Efficient way to run code multiple times
I would use the ndgrid function to create matrices from the parameters that you want to vary, convert the output matrices to ve...

How can I do a 3D plot after simulation.
Try this — LD = load('output_a_f_LL_bus5.mat'); Data = LD.Id_6.Data; t = LD.t.Time; figure plot3(Data(:,1), Data(:,2), t...

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Anonymous function of a series of nonlinear equations to accept vector input
Either: f= @(x1,x2,x3) [x1.^3;x2.^2;x3.^2]; x=[1;1.2;1.3]; f(x(1),x(2),x(3)) or: f= @(x) [x(1).^3;x(2).^2;x(3).^2]; x=[1...

1日 前 | 1

Why can't I edit y label and x labels in matlab subplot figures (.FIG)
I’m not certain what the problem is. You can get the handles to each subplot with: Axsp = subplot(3,2,4); ...

1日 前 | 0

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How to surface or mesh plot imported data?
‘... I need some commands that instructs MatLab that VarName1 and VarName2 are x and y respectively, while VarName3 is the z-coo...

1日 前 | 0

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Not enough input arguments when using bar()
Use the categorical function — x = categorical(["Outdoor1" "Outdoor2" "Outdoor3" "Outdoor4"]); y = [540 524 515 424];...

2日 前 | 0

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Ytick label is repeated and not alligend correclty
The tick labels are text objects, so it should be possible to change their alignments. (I cannot find that property documented ...

3日 前 | 0

How to plot multiple time series cell arrays as a shadowed area
Answer 1: See the colororder call. Answer 2: Yes, although it takes a bit of exploring to determine what those curves are. ...

3日 前 | 1

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Interpolating the indexes of values in a Vector
Use interp1 for this — a = [2 4 6 8 10 12 14 16]; k = 1:numel(a); interpc = @(b) interp1(a,k,b); bvector = [4.5 5 6 14.3]...

3日 前 | 0

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how to plot deformation on a cracked plate?
Iy ios possible to outline a rectangular (or any other shape) region easily enough (with the appropriate coordinates), however r...

3日 前 | 0

how can we find the coordinates of more points besides the points automatically generated by Contour in MATLAB?
You can define specific isolines — [X,Y,Z] = peaks(50); figure contourf(X, Y, Z, 'ShowText',1) title('Default Behaviour')...

3日 前 | 0

Changing numeric variables based on symbolic variables in a set of differential equations.
It can, actually, using the vpa function: test1 = vpa(subs(P_lv, V_lv, Y(end, 1)), 8) test2 = vpa(subs(P_C_vp, V_C_vp, Y...

4日 前 | 0

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How to remove the year from a datetime table column
The ymd function may be worth exploring. EDIT — (18 Sep 2023 at 23:08) Here is an example that also includes a scatter plo...

4日 前 | 0

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Frequency response from a transfer function?
I assume you intend a bode or bodeplot plot — s = tf('s'); G = exp(-s)/(2*s+1) figure bodeplot(G) grid See the docume...

4日 前 | 1

Adding labels to plots with LaTeX syntax
In the text call, specify 'Interpreter','latex', however the more interesting part of this was (finally) figuring out how to cor...

4日 前 | 0

i want to draw this DOP figure with these specific parametres
This probably represents a multi-exponential decay, because a single exponential doesn’t faithfully reproduce it. I would nee...

5日 前 | 1

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Resolving errors with Raphson method
My pleasure! The ‘y’ assignment needs to be an anonymous function, if I understand correctly what you want to do. That cha...

5日 前 | 0

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Is there a way to remove the units in my dataset
I have never encountered a dataset class array previously. (For whatever reason, the datasetfun function does not return a data...

6日 前 | 0

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Double integration of MPU 6050 data
Without knowing more, one possibility is that the integration of the MPU6050 data includes a constant (possibly an offset from z...

6日 前 | 0

How to fix problem with subplot and for loop
You are plotting seven subplots so you need to make room for them. Try this — clear; clc; load('ver.mat') Time_5=0:0...

7日 前 | 0

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How to simulate the forced response of a transfer function
Use the lsim function — s = tf('s'); G = (1-s)/(s^2 + 2*s + 1) t = linspace(0, 1E+1, 1E+3); u = @(t) 2*cos(3*t); Gu =...

7日 前 | 0

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Generating an example noisy sine wave signal
Try this — fs = 16000; % sampling frequency t = 0:1/fs:0.02; % start : time step : end...

8日 前 | 0

Patch Between two curves that are not functions. Crosses over
Perhaps this — x1 = [1 1 1 2.5 5]; y1 = [5 2.5 1 1 1]; x2 = [2 2 5]; y2 = [5 2 2]; figure hold on plot(x1...

8日 前 | 1

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How do I find the overall model p-value of a multinomial regression model (mnrfit)?
According to the documentation, mnrfit is no longer recommended (as of R2023a), and recommends fitmnr instead. It appears to p...

8日 前 | 1

Checking whether excel file is opened?
The fopen function can return information about MATLAB instances of the open files, however I am not certain that it can go beyo...

8日 前 | 0

how can i resample signals using signal analyzer app
The example in Resample and Filter a Nonuniformly Sampled Signal could be helpful.

8日 前 | 1

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