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William Rose


Con actividad desde 2007

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Respondida
Calculating the aortic flow downstream valve using Womersley and 3-element Windkessel model calculations from my FSI results - Why unusual sine waves at the end of flow curve?
@Hussam, [Edit: fix spelling erros.] I have not tried to understand all of your code. There are many plots above, and I cannot...

alrededor de 2 horas hace | 0

Respondida
help me to do nonlinear fitting use lsqcurvefit
@nirwana, I agree with the comments of @Mathieu NOE. He raises very good points - including the recommendation to share the s...

alrededor de 19 horas hace | 0

Respondida
Loudness Equalization Across Stimuli-Within Stimuli
@Buse, [Edit: correct spelling errors. Remove bullet point about ISO226 loudness levels, since I now see that function iso226...

7 días hace | 0

| aceptada

Respondida
How to get correct pixel size in 2D after cut 3D voxel using obliqueslice
@Kamil, [edit: fix spelling errors, no changes to code.] [Edit: Replace color images with new images that dont have an error i...

15 días hace | 0

Pregunta


unable to load file in Matlab Answers
I have been unable to load data from a file in Matab Answers for a week or more. I can attach a data file to my answer by click...

19 días hace | 0 respuestas | 0

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respuestas

Respondida
How to constrain the time and how to derive the acceleration and position trajectories from given velocity trajectory?
@Alireza, You are correct: trapveltraj(,EndTime=tEnd) assumes tEnd is a scalar or a vector of segment durations. Example 1: Th...

19 días hace | 0

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Respondida
Determine of coherence using Transfer function (Bode plot)
@Kumaresh Kumaresh, The coherence equals one in your example because you estimated the spectra Pxx, Pyy, and Pxy using a single...

20 días hace | 0

Respondida
Issue with Fitting Damping Model to Experimental Data
@Ts, You say q(t) is a response. Response to what? To v(t), I assume. But you have not told us v(t). If you apply the differ...

25 días hace | 0

Enviada


SNR of ECG
Estimate signal to noise ratio for electrocardiogram.

26 días hace | 5 descargas |

Respondida
Signal quality assessment with SNR in Matlab
@Elzbieta, This is a long answer, but I don't have time to write a shorter one. My reading of your calc_snr() code is that it ...

28 días hace | 0

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Respondida
Preserving relative proportions in graph after introducing bias in log scale plot
@Samuel, [Edits: Correct spelling errors, including "ch2inv" to "chi2inv".] [Edit: Correct formula for .] I have not tried to...

29 días hace | 0

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Respondida
Plotting the Electric field of a SPR sensor
@Mohamed, Do you have the data, and you want to know how to make a plot? If so, see here. If you are looking for a formula fo...

29 días hace | 0

Respondida
How can I draw a bifurcation diagram of the logistic dynamical coupled logistic map lattice system in MATLAB?
@Harpreet, What have you done so far? Your function L(e) is the logistic map function, with r=3.99. You have not specified th...

alrededor de 1 mes hace | 0

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Respondida
Violinplot extending beyond data range
@Angie, [Edit: add ylim() so that all 3 plots have same y-axis range.] You can vary the bandwidth, or the kernel function, or...

alrededor de 1 mes hace | 0

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Respondida
How do I interpret the output from fftn? (performed on a 3D matrix: time x spatial dimension 1 x spatial dimension 2)
@Neil Bailey, When you compare the 2d FFT to the 3d FFT, you must view slices through the 3d FFT that correspond to the plane ...

alrededor de 1 mes hace | 1

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Respondida
Layered Damped Soil on Elastic Rock - Site Amplification in Kramer Book
@ibrahim can beziklioglu, You included two plots: a matlab-generated plot of Amplification factor as a funciton of frequency, a...

alrededor de 1 mes hace | 0

Respondida
SNR vs Amplitude plot for ECG Lead
@Elzbieta, You have 21 amplitudes, 17 heart rates, and 8 leads (I, II, and V1 thorugh V6). That is a lot of combinations. I c...

alrededor de 1 mes hace | 0

Respondida
Calculating calibration ECG device parameters
@Elzbieta, [edit: fix spelling mistakes] As you know, the MPS450 allows the user to specify various output waveforms. See tabl...

alrededor de 1 mes hace | 0

Respondida
How to extract features from an ECG signal using ECGPUWAVE tool provided by physionet in MATLAB?
@Radu Stelu, ecgpuwave.m, here, is a matlab wrapper that calls an executable. there is additional info about ecgpuwave.m here. ...

alrededor de 1 mes hace | 0

Respondida
How to modify the filter to match the power output of the wind turbine with the wind speed?
@jana nassereddine, The horizontal axis labels and values are partly cut off, or absent, on the three images you uploaded which...

alrededor de 2 meses hace | 0

Respondida
Increasing value over time of Power of a audio signal
@Alex Kouroupis, You say "I need to calculate the power myself cause i need the values for a model". The first plot you pro...

alrededor de 2 meses hace | 1

| aceptada

Respondida
Compare probability density functions of 2 vectors
@T.C., [Edit: fix error in my code below.] The 2 sample Kolmogorov-Smirnov test. x1=rand(1,50); x2=rand(1,40); [h,p]=kstest...

alrededor de 2 meses hace | 2

Respondida
MLS(moving least squares) algorithm problem... help me!!!
@종영, In your comment you refer to "cubic spline function". Cubic splines for smoothing can be done with csaps(). The code be...

alrededor de 2 meses hace | 0

Respondida
Handling Multiple UTM Zones for Azimuth and Elevation Calculations in MATLAB
@Lidor, if I had to compute azimuth and distance for locations specified across multiple UTM zones, I would just convert to lat,...

alrededor de 2 meses hace | 0

Respondida
Input for ARfit ? (EEG analysis)
@Annaëlle, [Edit: fix spelling.] Have you run the script ardem.m, which is part of the ARfit toolbox? Does it produce reason...

2 meses hace | 1

Respondida
Plot the tidal ellipses for the four major tidal constituents
@은진, The line idx = find(strcmp(NAME, major_constituents{i})); does not work, because strcmp(NAME, major_constituents{i}) ...

2 meses hace | 0

| aceptada

Respondida
2D Fourier transform- problems with the shift
@nathan blanc, Reconstructing the 2d DFT is a little tricky. The attached script uses the Nk largest components of the 2d DFT t...

2 meses hace | 0

Respondida
My MATLAB psgnifit code is calculating the wrong values from the plot and I am unable to resolve it. Please help.
@Adithi Anil, I have not tried running your code. I notice that gamma=0; % lower symptote, supposedly lambda=10; % upper sympt...

2 meses hace | 1

Respondida
Why does the phase response get cutoff beyond a frequency?
Check the values returned by freqz. Answering on my cellphone so I’m limited in what I can do. Look for NaNs at high frequencies...

2 meses hace | 0

Respondida
quaternion kinematic formulation in attitude dynamics block does not seem to be complete.
@Gökhan, I think you are correct. A factor of (-1/2) should multiply the right hand side matrices in the equation here for the...

2 meses hace | 1

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