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Star Strider


Last seen: Today Active since 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.

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Answered
error with changing color of marker using scatter3
This is the best I cand o. See Plot Table Data with Custom Marker Sizes and Colors for a more extensive discussion. Tabl...

alrededor de 12 horas ago | 0

Answered
How to convert time column into a regular array?
If the time series are a datetime array, they can easily be plotted as funcitons of that variable. It would be best to convert ...

alrededor de 15 horas ago | 0

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Answered
Loop to replace outliers with NaN extremely slow
The way the table addressing is coded is likely the problem. I’m not certain, however using parentheses () addresses the tabl...

alrededor de 18 horas ago | 0

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Answered
How can i increase significant digits beyond 5 in basic fittings option in Matlab?
There are a few options, one being ytickformat (R2016b and later) and the other being the NumericRuler Properties, Exponent prop...

alrededor de 21 horas ago | 0

Answered
Average of two dataset
I cannot reproduce that problem here (R2021b). However, to compare all values for both curves, the (x1,y1) values need to be ...

alrededor de 21 horas ago | 0

Answered
I cannot extract data from syms surface plot: Struct contents reference from a non-struct array object
I can’t run the posted code because there are missing elements. Neverhteless, everything necessary to extract the data and re...

1 día ago | 0

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Answered
can't find line of best fit from simple code
The first argument to plot must be the independent variable vector. When I added that, it works! (I broke out the polyval ca...

1 día ago | 0

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Answered
A compact way to find elements of an array which are greater, equal, or less than the elements of a second array
To check all the elements against each other — a1 = [0 4 7 8 1 2 3]'; a2 = [4 4 6 9 9 1 1]'; Check = sign(a1 - a2.') ...

2 días ago | 1

Answered
Generate new samples from available data
This seems to be an interpolation problem, such that the original data are created by the original values, and the desire is the...

2 días ago | 0

Answered
Error "Cannot Create Output File" When Trying to Save Figure
I don’t often use print however it appears that the first argument needs to be the file name to print to. The argument order is...

3 días ago | 0

Answered
How to call a function with multi variable in real coded GA in function handle and how to define upper and lower bound of that variable in matlab?
If ‘Torque’ is the fitness function, it should be coded as: function T = Torque(p) % % % MAPPING: a = p(1), b = p(2), c = ...

3 días ago | 0

Answered
the for loop is only giving me the last value
There are likely a lot of zeros in the vectors because of the way ‘i’ is defined. The loop is likely not necessary anyway. ...

3 días ago | 0

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Answered
How to fit data to a function form
Yes! The mldivide,\ funciton will do this. x = randn(10,1); y = randn(10,1); z = randn(10,1); w = randn(10,1); DM = ...

3 días ago | 0

Answered
Is it possible to rectify the figure such that the zig-zag effect doesn't occur?
Using one of the sort functions to sort on the independent variable could work. Remember to sort both variables by the same sor...

4 días ago | 0

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Answered
Transfer Functions and Pole Zero forms
The Control System Toolbox tf and zpk functions could be helpful.

4 días ago | 0

Answered
How do I crop a matrix in MATLAB based on contents of one column?
I am not certain what the matrix is, or whether there are other missing entries in the matrix. If only the 5th column has missi...

4 días ago | 0

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Answered
how to plot graph for SIR epidemic model
I beleive ‘sir’ is supposed to be a system of ordinary differential equations. If so, this will get you started — tspan...

4 días ago | 0

Answered
how to fit ylabel for the plots?
One possibility — left_offset = 0.01; set(ylh, 'Rotation',0, 'Position',ylp+[left_offset 0],'VerticalAlignment','middle', 'Ho...

4 días ago | 0

Answered
extrapolate data to cross x axis
There are 19 variables in that .mat file. I have no idea which ones are to be extrapolated, so I took a wild guess on two of th...

4 días ago | 0

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Answered
finding matrix base on linear equation
I’m not certain what the desired result is here. Try this — x = linspace(-10, 10, 5); y = -0.15*x-21.3; X = [x(:), ones...

4 días ago | 0

Answered
Can I eliminate roundoff error caused due to floating point arithmetic limit in MATLAB?
Floating-point approximation error is simply inherent in binary representations of floating-point numbers. The best way to deal...

5 días ago | 0

Answered
What can I use instead of 'lsqcurvefit'
The ga function in the Global Optimization Toolbox does not use gradient descent and is therefore more resistant to getting hung...

5 días ago | 0

Answered
Trying to find an x value from a certain y value on my graph
I will re-post my original Answer because I believe it addresses the problem (although without the data, it is difficult to dete...

5 días ago | 0

Answered
Laplace transform not getting Value
I do not see any specific problems. syms x(t) Xs s eqn = diff(x,t,2)+2*diff(x,t)+26*x(t) == 10*cos(t)*(heaviside(t-pi)); ...

6 días ago | 0

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Answered
For machine learning classification between two samples, how can I focus on certain frequency components as the separating feature?
There may be many approaches to this. I actually did something similar using linear discriminant analysis (the Statistics and M...

6 días ago | 0

Answered
How can i create a discrete system with defined delays zeros and pole?
If you are starting with the pole and zero locations, you can get the transfer function representation easily by using the zpk f...

6 días ago | 0

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Answered
Plot 3rd differential equation
The documentation section on dsolve and Solve Differential Equation describes it better than I can! (It will be necessary to ...

6 días ago | 0

Answered
How to draw line between point and plotted line?
The two plots are different, so using the provided data (and the same Wikipedia article Distance from a point to a line) provide...

6 días ago | 0

Answered
In Scatter plot, make the largest data on the top
Since the data are being plotted with scatter3, experiment with the view function to rotate the 3D figure to display it as desir...

7 días ago | 0

Answered
Plotting bode diagram with a transfer function without values
No. How would you plot it without assigning values to any of the varaibles? (It would be possible to symblically derive some...

7 días ago | 0

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