Community Profile

photo

William Rose


Last seen: 1 day ago
134 total contributions since 2007

Contact

William Rose's Badges

  • 3 Month Streak
  • Revival Level 2
  • Knowledgeable Level 3
  • Personal Best Downloads Level 1
  • First Review
  • 5-Star Galaxy Level 1
  • First Submission
  • Thankful Level 1
  • First Answer

View details...

Contributions in
View by

Answered
How to code an instantaneous reaction in Matlab
@Robert Demyanovich, Here is a simulation. Figure 1 shows the concentration profiles at specific time points. The simulation s...

14 days ago | 0

| accepted

Answered
Unknown angles as functions of time
@Dario Saracchi, You can do some algebra before you do some code. Define some constants: d=AB*cos(alfa)-AC*cos(delta) e=AB*si...

15 days ago | 0

| accepted

Answered
How to code an instantaneous reaction in Matlab
@Robert Demyanovich, Do you expect to end up with a partial differential equation, as expected for diffusion? Of course the 1...

15 days ago | 2

Answered
Problem/question with regression
You need at least one more data point to do a standard regression, so that you have more equations than unknowns. Even with mor...

16 days ago | 1

| accepted

Answered
Frequency sweeping in a sinusoidal signal
@Nneka Onubogu, You can initialize the vectors p, x, and y before the loop as follows: dt=4e-6; %(s) fs=1/dt; %(...

16 days ago | 0

| accepted

Answered
line calculations using its known coordinates
Suppose slope of line 1 is a1 and slope of line 2 is a2. Then angle of line 1 relative to x axis is theta1=arctan(a1) and angle ...

17 days ago | 0

Answered
Removing baseline drift from EOG signal
@Mahsa Rm, The initial posting of your question did not include the data file or the figure - at least I did not see them. That ...

18 days ago | 0

Answered
Removing baseline drift from EOG signal
@Mahsa Rm, A high pass filter is usually the solution. You need to specify the cutoff frequency. Oscillaitons below the cutoff...

18 days ago | 0

Answered
Frequency sweeping in a sinusoidal signal
@Nneka Onubogu, Thak you for reformatting the code part of your original post. The original post asks how do I do a chirp from...

19 days ago | 0

Answered
Frequency sweeping in a sinusoidal signal
@Nneka Onubogu, If you highlight your code in your posting, and then click the "code" icon at the top of the pane, it will form...

19 days ago | 0

Answered
Estimation of NegEntropy in MATLAB
@Marimuthu Ananthavelu and @Smriti Thakur, Here is code to estimate the entropy and negentropy of time domain signal, y. In thi...

19 days ago | 0

Answered
How to do estimate Non-gaussianity using Negentropy?
@Maria Amr, I figured it out. Here is an example of a signal y, and how to calculate its entropy (Hent) and its negentropy (J)...

20 days ago | 1

Answered
Estimation of NegEntropy in MATLAB
@Marimuthu Ananthavelu and @Smriti Thakur, pentropy(), in the SIgnal Processing Toolbox, computes the entropy of a signal's pow...

20 days ago | 0

Answered
How to do estimate Non-gaussianity using Negentropy?
@Maria Amr, You will find several questions and answers about negentropy if you search Matlab Answers for negentropy. Negentro...

20 days ago | 1

| accepted

Answered
Want to take a section of a curved line between 2 points
@katherine keogh, interp1(x,y,xq,method) will interpolate in a smooth way. See the help for it here. You tell it the known x'...

20 days ago | 0

Answered
2D mass spring damper square lattice
@Muhammad Ali, The system in the image you attached is obviously a lot more complicated. Masses m1 and m3 have 6 attached eleme...

21 days ago | 1

| accepted

Answered
Plotting Sinusoidal Wave Graph on MatLab
@cikalekli, Start by figuring out a good time range. Since you have cos(1256t-pi/4), the period is , so let's plot for two peri...

22 days ago | 1

| accepted

Answered
Upsampling by a non-integer number
@Malahat Mehraban, If you search "resample" on this site, you will see the question has been answered multiple times. For exam...

22 days ago | 2

Answered
How to find closest point in plane to another point? Matlab solution
@Sue Swenson, A plane can be described by This plane has normal vector . Suppose is a given external point. Find the poi...

23 days ago | 1

Answered
Plomb function improvements with taper
@J E, I recommend this paper https://iopscience.iop.org/article/10.3847/1538-4365/aab766/pdf especially sections 7 and 8. The...

23 days ago | 0

Answered
2D mass spring damper square lattice
@Muhammad Ali, The equation of motion for a M-S-D system may be written as where is a position vector, is frictional drag,...

23 days ago | 0

Answered
Multiplying from a loop
@Michael Akiva, Here is code that adjusts r at the frequencies near each pole pair, until -0.9<=H(w)<=-1.0. Since there are th...

25 days ago | 0

Answered
Multiplying from a loop
@Michael Akiva, Get rid of the loop for n=[1:3] ... end but keep the code inside the loop, and define all 6 zeros a...

25 days ago | 0

| accepted

Answered
How can I measure the area covered by a Bar Chart Plot?
@Tawsif Mostafiz, If you make a histogram using Matlab's histogram command, for example as follows, data=randn(1,1000); h=his...

25 days ago | 0

Answered
Can you help me how to move forward
@kraken, Now for the answers to your specific quesitons: gdel=grpdelay(dee); returns the group delay at 512 points from frequ...

26 days ago | 0

Answered
Can you help me how to move forward
@kraken, next part of my answer: Your plot 1 uses ylabel('x'); xlabel('t'); but the correct labels should be ylabel('|X(...

26 days ago | 0

Answered
Can you help me how to move forward
@krakenThe code you provided runs - good. Are you aware that, because of how you constructed t, the sampling rate in t does not...

26 days ago | 0

Answered
Filter function in MATLAB
@Mohammad Zulqarnain, @Jan is right, as usual. I really like filtfilt() because it has zero phase lag at all frequencies. fil...

1 month ago | 1

Answered
Help with my SIR MODEL
@Darren Tharby I think you did intend to call sirs_model(), from the File Exchange, since the seven variables which you pass ar...

1 month ago | 0

Answered
Help with my SIR MODEL
@Darren Tharby, You get an error at lline 13 because line 13 (which is in function sir_model()) calls itself. That is not OK. ...

1 month ago | 0

Load more