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nirwana


Last seen: 23 jours il y a Actif depuis 2023

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Question


The extrinsic function 'perms' is not available for standalone code generation.
I am trying generate mex file using matlab coder, where in my function i use function perms, but I get this problem The extrins...

27 jours il y a | 2 réponses | 0

2

réponses

Question


Unexpected matlab operator when using Matlab Coder
I use Matlab Coder to generate mex file, but in the middle of process I got error message "Unexpected MATLAB operator" that is i...

27 jours il y a | 1 réponse | 0

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réponse

Question


failed to generate MEX function, generation of trial code failed
I am trying convert my matlab code in order to speed up thye computational time. let me describe my function is, first I read a...

30 jours il y a | 1 réponse | 0

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réponse

Question


save tic toc in duration style
Hi all, I would like to save my computational time using tic toc but in format duration (i am trying to use duration but I don't...

environ un mois il y a | 2 réponses | 0

2

réponses

Question


result spectrogram from lowpass filter still pass frequency above the treshold
I am trying use lowpass filter to my time series data and then i perform spectrogram to check wheater the signal still containin...

environ un mois il y a | 1 réponse | 0

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Question


combine spectrogram result in one figure
I have 20 min signal and would like to combine its sepectogram become one spectrogram consecutively. my idea is put index of eac...

environ 2 mois il y a | 1 réponse | 0

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Question


make figure spectrogram as length as signal above it
I would like to put spectogram result below the signal figure. I use specgram (in second row) and spectogram result in last row,...

environ 2 mois il y a | 1 réponse | 0

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Question


plotting data to get mahalanobis and eucledian distance
I get example from book to calculate mahalanobis and eucledian distance as shown below, but the book doesn't provide ilustration...

8 mois il y a | 1 réponse | 0

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Question


quadratic curvature doesn't went smoothly
Anyone can help me? I am trying to fit my data with first and second order polynomial, but the result of quadratic curvature do...

9 mois il y a | 1 réponse | 0

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réponse

Question


why FFT result and IFFT result has diffrent in very small value? how to avoid this to increase precission?
I read from the book that IFFT from FFT result as ifft(ftt(signal)) wil give us the original signal. I try to substract both of...

10 mois il y a | 1 réponse | 0

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réponse

Question


help me with for loop
I know this is very basic question, but i still has difficulty to answer it i try to add some fourier series to prove gibbs eff...

10 mois il y a | 1 réponse | 0

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Question


error plotting, but succed when plotting order is change
I am tring to plot instantaneous freq using code below, subplot(311),instfreq(signal,srate,'Method','hilbert'); subplot(312),...

11 mois il y a | 1 réponse | 0

1

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Question


sign in option in matlab does not work, i can not install adds on
I install matlab in fedora using student lisence from uni, but the sign in bar in the left side still no showing my ID. Also i...

11 mois il y a | 1 réponse | 0

1

réponse

Question


Help IFFT can not restore to original signal after filtering
I tried to compare original signal and signal after high pass filter using ifft. but the result seems odd to me. Can anyone expl...

11 mois il y a | 1 réponse | 0

1

réponse

Question


Why damping amplitude the amplitude shifting position of y azis
I damped the amplitude signal using by multiplied the freq with 0.5 after fft result, and returning the signal to time domain us...

11 mois il y a | 1 réponse | 0

1

réponse

Question


Meaning of manual hilbert transform
I am in early stage of learning hibert transform, and i sumarize the step of computing Hilbert is (CMIIW) : computing FFT of si...

11 mois il y a | 1 réponse | 0

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Question


Why result of conv and point wise multiplication has different result?
I am comparing conf function and sum over point wise multiplication of two signal and then plot it. I end up with figure that ha...

11 mois il y a | 2 réponses | 0

2

réponses

Question


wny fft does't work with different signal?
I am using fft to extract freq content in my two type of time series. First, time series (file sig_fft.txt) look good and showin...

11 mois il y a | 1 réponse | 0

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Question


How to put legend in subplot automaticaly using for end?
Can anyone help me how to put legend in left and right figure as shown below? Since this figure generate by looping (for-end), I...

11 mois il y a | 1 réponse | 0

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Question


express ODE without set a m file function
Can someone explain this to me? actually this is part od example in the numerical book I found example in numerical book about ...

environ un an il y a | 2 réponses | 0

2

réponses

Question


plot line with function but doesn't appear like i want
I have a figure below and i want to reproduce it using matlab figure . The diagonal line come from equation x/(sqrt(x^2+a^2...

environ un an il y a | 1 réponse | 0

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Question


set first derivative equal to zero with some constant
I have equation from derive from snellius law and i'd like to set its derivative equal to zero since fermat principle said so. ...

environ un an il y a | 1 réponse | 0

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Question


How to save result after run function for different input in matlab
I use a function with different input, but the input has no temp=[26.67 93.33 148.89 315.56]; visc=[1.35 0.085 0.012 0.00075]...

plus d'un an il y a | 1 réponse | 0

1

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Question


save animation into gif
hi...i wrote my function and making it as walking sine, and i'd like to save it as a gif. can anyone help me? close all t = l...

plus d'un an il y a | 1 réponse | 0

1

réponse

Question


animated sine wave continously
Hi alll, i'd like to make sine wave with three variation and walk continously, but i end up make it uncontinously, here the scr...

plus d'un an il y a | 1 réponse | 0

1

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Question


Plot complex signal with imaginary and complex
Hi....i would like to plot imaginary and real number of my signal. The expected output as shown below, but i don'e know which pl...

plus d'un an il y a | 3 réponses | 0

3

réponses

Question


How to plot convolution between signal and Hilbert tranform operator
Hi... I ask to reproduce the complex signal as a result from convolution between cosine wave and hilbert transform operator as a...

plus d'un an il y a | 1 réponse | 0

1

réponse

Question


connecting sinus function with circle through animation
Hi...I am trying to make animation that shows sinus function is a circle as ilustrate in the fig. First my problem is how to rot...

plus d'un an il y a | 1 réponse | 0

1

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Question


can we make 3D mash plot from eq y(x)
I have equation ball trajectory y=(tand(theta)*x-(g/(2*v0^2*cosd(theta)^2)*x.^2)+y0 i wonder how to make mesh plot when i have...

plus d'un an il y a | 2 réponses | 0

2

réponses

Question


make function to plot countour and 3D
Hi, I want to make automatic function to plot 3D mesh and contour to given any function, but it turn doesn't work, can you help ...

plus d'un an il y a | 1 réponse | 0

1

réponse

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