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**Feeds**

Nondimentionalize the 2 DOF equations

@Yu, The two diagrams in your recent comment are helpful. You say in your recent comment "I define x2 as the relative displacem...

3 dagen ago | 0

Nondimentionalize the 2 DOF equations

@Yu, You are smart to add Sam Chak's name. He is a great and smart source of analysis and help. There is more than one way you...

4 dagen ago | 1

Is there a way to determine an equivalent circuit for Nyquist diagrams (I have the data set) using Matlab (or Simulink)?

@Arthur FdA, Yes you can. The experimental data needed for Nyquist and Bode plots is the same: a set of magnitudes and phases,...

7 dagen ago | 1

Improving personal Fourier Interpolation Model

@Giacomo, I do not understand everything you are doing in your script. But it looks lto me like you discard the phase informat...

12 dagen ago | 0

how do i get a proper time plot for this qudratic equation?

@Pranay, Let us try different initial values for x: x0=[-2,...,2]. Use a different initial value on each pass. Store results i...

13 dagen ago | 0

How to properly make a circular histogram?

@Neuroesc, Check out these items on the file exchange: https://www.mathworks.com/matlabcentral/fileexchange/65174-wind_rose-wi...

13 dagen ago | 0

Create (equal density) spaced vector in MATLAB

[Sorry if this is a duplicate answer. My first attempt to post produced an error message.] @Abinesh G, Here are command that w...

14 dagen ago | 0

| accepted

How can I find the power factor when my system contains harmonics?

@Chonlasit, When you have harmonics, the power factor for a single-phase system, and for a 3-phase system with three identical ...

14 dagen ago | 0

| accepted

Can't understand why Pwelch claims window is larger than input signal

@Jude, [Edit: correct spelling in my comments.) You need to use the transpose of the data array. pwelch() finds the spectrum ...

14 dagen ago | 1

| accepted

Simulating a high performance, very compact optical distance measurement sensors for applications such as ADAS

@idris, "Does mathworks provide such a functionality of simulating a ladar that is edge emitting, and having 905nm, single stri...

15 dagen ago | 0

| accepted

model reduction from a database created with xfoil

@Marko, I do not think proper orthogonal decomposition or principal component analysis will be useful for this problem. To do p...

16 dagen ago | 0

Can anyone help me in understanding of deconvolution based on toeplitz matrix?

@Junjie Zhao, Here is an examle, using d=[1 2 3 4 5], which you suggested. Since d has length 5, then the convolution d*w = p (...

16 dagen ago | 0

how to heat map encode a smoothed line of sparse time-series data

@hxen, [Edit: Add label to colorbar.] The script below plots the raw data and smoothly interpolated data, colored by speed. Yo...

17 dagen ago | 1

| accepted

Question Regarding Baseline Correction in Time-Frequency Analysis of Auditory MMN Data

@Elaine, [Edit: fix spelling errors] I understand that you want to do time-frequency analysis on EEG data evoked by auditory s...

ongeveer een maand ago | 0

QRS area calculation from ECG

@Gültekin Günhan, [Edit: Add a citation of, and link to, the original Kors paper. The data and matrix and code are unchanged.]...

ongeveer een maand ago | 0

Converting spectrum.pwelch//psd to equivalent pwelch call

@Ron Fowler, The defaults for spectrum.welch are listed here. The defaults for pwelch are listed toward the bottom of this p...

ongeveer een maand ago | 0

Motion correction for foot movement in an MRI foot

@Trixie, Please upload a subset of the data array, im4d. For example, the first 10 time points, i.e. a 128x64x51x10 array. Mayb...

ongeveer een maand ago | 0

Submitted

Random numbers with custom distrbution

myRand returns random numbers with a custom distribution specified as a histogram.

ongeveer een maand ago | 0 downloads |

Can we specify an "outward" direction to normal obtained from pcfitplane approach?

@Manish Kumar Nayak, I agree with @Matt J. To be more specific: Assume n is the normal vector returned by pcfitplane. If yo...

ongeveer een maand ago | 0

| accepted

Find the ratio or difference spectra as time progresses

There is a large literature on transfer funciton estimation by taking the ratio of two complex spectra. This usually involves th...

ongeveer 2 maanden ago | 1

How to calculate HF/LF from ECG data

@拓実, The ratio of power in the low frequency band (defined as 0.04–0.15 Hz) to the high-frequency band (defined as 0.15–0.40 Hz...

ongeveer 2 maanden ago | 0

Plotting deflection of beam using macaulay functions

@Benjamin, You wrote: "An example of this function would be: slope=(1/(E*I))*(146.5*<x>^2+315<x-0.12>^2-70.24*,x.^3)" I inter...

ongeveer 2 maanden ago | 0

How to plot one curve and change color according to value

@Fritz Weld, [Edit: clean up code a lttle bit.] x = linspace(0,10); y = sin(3*x).*exp(0.5*x); y1=zeros(size(y)); y2=y1; % i...

ongeveer 2 maanden ago | 0

Random Number Generation with Parameters

@Demosthenis Kasastogiannis, I share @John D'Errico's question. I am not sure I understand your reply to his question. My under...

ongeveer 2 maanden ago | 0

| accepted

How to calculate average frequency and a frequency over time graph all in Matlab?

@Ugonne, [edit: I adjusted my discussion at the bottom slightly. No changes to code or plots.] I made a recording with my comp...

ongeveer 2 maanden ago | 0

How to datasample exponential data without losing the exponential decay?

@SARA CACCIATO SALCEDO, @Star Strider and @Les Beckham have provided excellent suggestions. You want a matrix that is 400x1000...

ongeveer 2 maanden ago | 2

Good evening, we have a point cloud and have applied an first rotation to align the point cloud along the y-axis. Now we have a problem with a second rotation

@Alessandro, You can find the directions of the principal axes by eigenvalue decomposition of the covariance matrix of the poin...

ongeveer 2 maanden ago | 0

I need help using the corrcoef function to calculate PRx (pressure reactivity index)

@Caleb, The pressure reactivity index is defined as "a moving correlation coefficient from 30 consecutive 10-s averages of ICP ...

2 maanden ago | 0

how i can modifiy the code to make the bandwith of fft less ?

@ANAS HAMZAH, To get the very narrow bandwidth shown inthe second plot in your PDF, you need to inccrease the duration of the s...

2 maanden ago | 0

Determining gait cycle from heel marker motion capture data

@Katie, Post some example data if you wish. Here is a paper I co-authored on the topic of identifying gait cycle during teadmi...

2 maanden ago | 1