[Mne_analysis] sampling rate and time frequency analysis

[Veda Hung]

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Hi MNE experts,

I conducted time frequency analysis on resampled MEG data (from 1000Hz to
500 Hz) with the following parameters. the length of epoch is between -2s
to 12s.
n_cycles = 6
freqs = np.arange(4., 100., 1.)
power= tfr_morlet(epoch, freqs=freqs, n_cycles=n_cycles, use_fft=True,
decim=3,n_jobs=1,average=False,return_itc=False)

The length of the resulting power is  2334. However, I expect that the
length should be 14*500/6, which is 1667, where 14 is the total length of
epoch, 500 is sampling rate and 6 is the number of cycle. It seems that the
sampling rate is still 1000, rather than the new sampling rate (500). I am
pretty sure that I resampled the data before time frequency analysis.
Anyone has a clue why the length of the power from tfr_morlet does not
respect the length of the epoch. Thanks.

Best,
Veda
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