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Star Strider


Last seen: Today Aktiv seit 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. Time Zone: UTC-7 (Standard); UTC-6 (Daylight Savings/Summer)

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Beantwortet
Make a surface (interpolated colors) plot with contour lines over it
You can use a surfc plot with tweks to the contour plot, and an appropriate view call — [X,Y,Z] = peaks(250); figure hs = ...

etwa eine Stunde vor | 0

Beantwortet
polynomial function to transfer function in matlab
Consider this (if you have the System Identification Toolbox) — Data = iddata(y, x, Ts); sys = tfest(iddata, 4) figure c...

etwa 7 Stunden vor | 0

Beantwortet
How to get x value for a given y value in a interp1 figure?
To get both of them — vv=[0.190934428093434,0.277000826121106,0.477820361464529,0.703789686451856,1,0.703789686451856,0.477820...

etwa 7 Stunden vor | 1

Beantwortet
How can I use the Basic Fitting tool to create a trendline on different scatterplots within the same figure?
An easy way to do this is to use the lsline function. If you need the parameters of the line, they are relatively straightforwa...

etwa 7 Stunden vor | 0

Beantwortet
How to smoothly interpolate signal data using another datasets timestepping
Yes. If you have the Signal Processing Toolbox, use the resample function. You can define the sampling frequency of the resamp...

etwa 8 Stunden vor | 0

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EEG data preprocessing and filtering.
It seems to me that one or both filters are not designed correctly. The filtered result does not appear to be similar to the in...

etwa 8 Stunden vor | 0

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My scatter plot points aren't showing up on my main line plot.
Perhaps something like this — [s2max,s2idx] = max(s2); [s3max,s3idx] = max(s3); figure hold on scatter(t(s2idx),s2max,'o...

etwa 19 Stunden vor | 0

| akzeptiert

Beantwortet
Can not calculate coefficient Accurately
Only request the coefficients of ‘X2’ and then divide ‘EQ_01(2)’ by ‘X1’ — syms X1 X2 Disp = X1*(4*X2 - 4*X1 + 1) [EQ_01, T...

ein Tag vor | 0

Beantwortet
Is there any example of Range-Speed Response Pattern in MATLAB or how can i crate one?
See the Phased Array System Toolbox documentation section on Range and Doppler Estimation and then choose the appropriate sectio...

ein Tag vor | 0

Beantwortet
Extracting certain set of points from a 3D plot
I would use the contour function for this. Example — [X,Y] = ndgrid(-3:0.1:3); f = @(x,y) exp(-(x.^2+y.^2*3)*0.75); Z = ...

2 Tage vor | 0

| akzeptiert

Beantwortet
baseline correction of raman data
The general approach (that has worked for me before) to correct spectrum baselines is to identify specific local minima, fit a c...

2 Tage vor | 0

Beantwortet
Reduce the number of peaks from findpeaks command?
The findpeaks function has a number of name-value pair arguments that you can use. The two I use most often are 'MinPeakPromine...

3 Tage vor | 0

Beantwortet
See if datetime is within range
I do not entirely understand what you want to do. One approach — D1 = {'3/25/2024 15:01:15' 1 '3/25/2024 15:01:31' 2...

3 Tage vor | 0

| akzeptiert

Beantwortet
how to use multiple '%c' on each variable ?
Add ‘VariantFy’ as an argument to the function as ‘L28’ (or whatever you choose to call it): function writefile(C,L28) and ...

3 Tage vor | 0

| akzeptiert

Beantwortet
Problem while attaining the coefficent of variable
You need to specify more terms in your coeffs call. The problem is that then the polynomial separates into two separate polynom...

4 Tage vor | 0

| akzeptiert

Beantwortet
histogram on data graph
One option (if your data were a scatter plot) would be the scatterhist or scatterhistogram functions. Otherwise, perhaps some...

5 Tage vor | 0

Beantwortet
Add a bar above a character in axis labels
Try this — figure ylabel('$\bar{c}$', 'Interpreter','latex') .

5 Tage vor | 1

| akzeptiert

Beantwortet
'readtable' in 2023 version error (This issue did not occur in 2018)
I do not understand ‘2023b the array only has many 3’, however I believe that the shortened table display in the last few releas...

5 Tage vor | 0

| akzeptiert

Beantwortet
Removing instantaneous jumps (outliers) from a time series data set
There are several functions to detect and remove outliers, depending on how you want to define them and deal with them. Here ...

6 Tage vor | 0

| akzeptiert

Beantwortet
Rate of Force Development for Isometric Mid-Thigh Pull
The denominator is a vector, so you need to use element-wise division (./) instead of matrix division (/) — rRFD = (r_Peak - r...

7 Tage vor | 0

Beantwortet
Substitution of symbols in equation after their values are being calculated
Try this — syms yApprox(X1) a0 a1 a2 a3 a4 a5 a6 syms a2 a3 a4 a5 a6 EQ_01=a2 +9*a3 + 72*a4 + 540*a5 + 3888*a6 == -121/36000...

7 Tage vor | 0

| akzeptiert

Beantwortet
How to create separate data for daylight hours and nighttime hours in MATLAB?
It would be best to begin by importing your data to a table using the readtable function. The date and time values (whatever th...

7 Tage vor | 0

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Beantwortet
How to Extracting Only Surface Coordinates from a 3D STL File in MATLAB?
See if the trisurf function does what you want — Uz = unzip('22G teardrop COMSOL.zip'); filename = Uz{:}; [TR,fileformat,att...

7 Tage vor | 0

Beantwortet
Facing Problem while solving Linear Equations simultaneously
The only correction required to get this to run is to add the syms declaration — syms a2 a3 a4 a5 a6 EQ_01=a2 +9*a3 + 72*a...

7 Tage vor | 0

| akzeptiert

Beantwortet
Seeking Guidance on Electrophysiology Data Analysis: Data Smoothing, Baseline Adjustment, and Graph Overlay
There are probably several ways to do what you want, depending on what that is. To remove a wandering or non-zero baseline, o...

8 Tage vor | 0

Beantwortet
How to obtain the standard deviation of the fitting parameters?
The most meaningful measure of the parameters is the confidence interval. You could possibly recover some information from the ...

8 Tage vor | 0

| akzeptiert

Beantwortet
What is the best way of calculating the path length of a freely moving tracked animal.
What you probably want is a line integral. This integrates the hypotenuse of simultaneously varying elements along a level path...

8 Tage vor | 0

Beantwortet
Converting xlsx files to frequency domains using the fft algorithm
Try this — T1 = readtable('120mm.xlsx') VN = T1.Properties.VariableNames([1 4:end]); t = T1{:,1}; s = T1{:,4:end}; Ts = ...

8 Tage vor | 2

| akzeptiert

Beantwortet
creating a plot of one cycle from multipel cycles
This is called an ‘ensemble average’. One approach to it (I have posted several times on these problems) is in Combining repeti...

8 Tage vor | 0

Beantwortet
I am trying to solve a system of three differential equations simultaneously
It ‘sort of’ has an analytic solution (if you want to let it run for a while, and then can make sense of that result), however i...

9 Tage vor | 0

| akzeptiert

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