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Star Strider


Last seen: Today 2012 以来アクティブ

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.

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DSP Format Discrete Transfer Function Matlab
The DSP system Toolbox functions, objects, and filters are not compatible with Signal Processing Toolbox functions. To use freq...

約4時間 前 | 0

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converting a second degree differential equation into a first order
Declare all the variables, and for good measure, return the second output from odeToVectorField because it tells you wnat the fu...

約13時間 前 | 0

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Argument to dynamic structure reference must evaluate to a valid field name.
Typographical error. The single . is generating the error. V_c =2.*pi.*x10.((R-x9).^2 - x1.^2) + pi.*L.*(R.^2 - (R-x9).^2)...

約13時間 前 | 0

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Using \cdot in sprintf, with latex interpreter
Use \\ to ‘escape’ the backslash, also, meet \frac iF = 42; tau= 4.2E-3; figure plot([150 155 190], [0 1.7 2]) set(0, 'def...

2日 前 | 0

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Using Latex and symbols e.g. \omega
From the fprintf secton on formatSpec Backslash \\ It has to be ‘escaped’ by preceeding it with another backslash. Th...

2日 前 | 0

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Unable to plot transfer function properly by using step(tf,array)
I do not usually post multiple answers to the same question, however my original answer is in the process of being sabotaged, so...

2日 前 | 0

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Need help designing stopband filter
Thank you for quoting my code! The FIR filter will eliminate both frequencies in one filtfilt call to it, however they are no...

2日 前 | 0

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axis off sets background color back to white despite set(gca....
If the desired result is simply to make the axes invisible, perhaps using the Axes Properties XColor, YColor, and ZColor values...

3日 前 | 0

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Z-Transform of numerical test data
Data are data. They exist as discrete elements in computers because (except for signal-level internal voltages and currents in ...

3日 前 | 0

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Code not working?
It plots correctly if ‘f_f’ is defined correctly. The middle value for colon-operator generated sequences is the ‘step’ value, ...

3日 前 | 1

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Unable to plot transfer function properly by using step(tf,array)
It may not be the desired result (I have no way of knowing what that is), however it appears to be exactly what step was asked t...

3日 前 | 0

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How do I count certain values within a column of a table?
One approach — MajorAxisLength = 30*rand(15,1) Lv = (MajorAxisLength >= 5) & (MajorAxisLength <= 26) MeetCriteria = nnz(Lv...

3日 前 | 0

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Can matlab 2012b run on windows 11?
No. Only R2021b and later releases support Windows 11. See Platform Road Map for the MATLAB and Simulink Product Families ,...

3日 前 | 0

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Pulling certain data from a text file into Matlab with strsplit
Try something like this — % opts = weboptions('ContentType','text'); % M = webread('https://www.mathworks.com/matlabcentral...

3日 前 | 0

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How to fit data!
This is something similar to Curve Fitting of large Data Measurement? however with a different sort of envelope. I would begin ...

3日 前 | 0

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How to group data according to date in years?
Since 'dayofyear' won’t work, break the dates down into two new variables, specifically the day and the month, then group on the...

4日 前 | 0

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How to label the farthest x point
Consider perhaps ... v0=75;%initial velocity of 75m/s g=9.81;%force of gravity 9.81 m/s^2 theta=[0:(pi/100):(pi/2)]; %values...

4日 前 | 0

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High-precision IFFT
Since it appears that these calculations are all symbolic, one option would be the ifourier function, or if you are using your o...

4日 前 | 1

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How to calculate Area under a curve (negatif side)
I went with the patch function because I’m more familiar with it. Try ths — f = [-0.390930468901234 -0.346778353936444 -0.3...

4日 前 | 1

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how to calculate wavelength of texture ?
Consider using the smoothdata function to eliminate the high-frequency noise. After that, first, use the detrend function to re...

5日 前 | 0

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Curve Fitting of large Data Measurement?
Try this — T1 = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/871405/Measurement%20Data.xlsx', '...

5日 前 | 1

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How do you solve this on matlab
I would use the null function.

5日 前 | 0

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I want to write this transfer function (0.7/s^2)*sin(0.05) in MATLAB code, but sine make it complicated. Kindly, how can I make that?
Since the sin call creates a constant and is not itself a function of ‘s’, evaluate it first and then just multiply it as with a...

7日 前 | 0

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About Adding Lines to Your startup.m file
See the documentation on startup I believe that it now has to be in (Windows machines): C:\Users\<UserNAme>\Documents\MATLAB...

7日 前 | 0

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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...

7日 前 | 0

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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 ...

7日 前 | 0

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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...

7日 前 | 0

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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...

7日 前 | 0

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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 ...

8日 前 | 0

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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...

8日 前 | 0

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