nirwana
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Accept 5 answers given by other contributors
Awarded to nirwana on 25 May 2023
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Frage
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...
5 Monate vor | 2 Antworten | 0
2
AntwortenFrage
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...
5 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
5 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
5 Monate vor | 2 Antworten | 0
2
AntwortenFrage
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...
5 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
6 Monate vor | 1 Antwort | 0
1
AntwortFrage
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,...
6 Monate vor | 0 Antworten | 0
0
AntwortenFrage
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...
12 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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),...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa ein Jahr vor | 0 Antworten | 0
0
AntwortenFrage
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...
etwa ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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 ...
mehr als ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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. ...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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]...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 3 Antworten | 0
3
AntwortenFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als ein Jahr vor | 2 Antworten | 0
2
AntwortenFrage
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 ...
mehr als ein Jahr vor | 1 Antwort | 0
1
Antwort
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