I would like to get bode plot from FFT data. How do I convert the data obtained(complex values) so that it can be used by the 'bode' function in matlab.
Direct link to this answer:
You need to create an frd object.
here is example code from doc page.
% generate a frequency vector and response data
freq = logspace(1,2);
resp = .05*(freq).*exp(i*2*freq);
% Create a FRD model
sys = frd(resp,freq);
Now simply do
Direct link to this comment:
Thanks Arkadiy for the reply.
However, I am unable to understand how to make frd data from fft data. I got lets say ,following data points after doing fft [2+2j,1-3j,4, 5+4j]. How do i convert this into frd.
freq= % enter the frequency values at which the corresponding fft
% values are obtained
MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi
Opportunities for recent engineering grads.
New to MATLAB?
Unable to complete the action because of changes made to the page. Reload the page to see its updated state.
Choose your country to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a location from the following list:
See all countries