Help with filtering a signal

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NAS 2019-6-12

评论： NAS 2019-7-12

I am trying to filter a signal that is imported though by a txt file and I am getting an error. The signal has a sampling frequency of 1000.

data = importdata('data.txt');
fs = 1000;
R = data.data(:,1);
my_filt(R,50, 1000, 1)

Error using filtfilt

Expected input to be finite.

Error in filtfilt>efiltfilt (line 114)

validateattributes(x,{'double'},{'finite','nonempty'},'filtfilt');

Error in filtfilt (line 89)

y=efiltfilt(b,a,x);

Error in my_filt (line 30)

smoothed_data=filtfilt(B,A,raw_data);

Thanks!

Walter Roberson 2019-6-12

find(~isfinite(R))

NAS 2019-7-12

Thanks!

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