FFT on temperature series
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Hello I have a temperature series that consists of 1066 data points which were collected every 2 hours for 3 mounths. I am trying to determine whether there is cyclic behavior on this dataset. I am using fft on matlab( fft is new concept to me). There is something wrong. I get a blank graph with two lines that coincide with axes and when I use fftshift I have a peak at zero and nothing around! Thank you in advance for your help.
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Star Strider
on 17 Nov 2015
Without your data and code, it is not possible to determine what the problem is.
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