filtfilt result in 'NaN' numbers

[Bo]

I am trying to use filtfilt to implement a IIR bandpass filter and it gives me all 'NaN' numbers.

These guys are having the same problem as me:

http://the-moni-blog.blogspot.com/2008/06/last-week-i-found-myself-trying-to-deal.html

The input I use does not contain any NaNs, inf nor -infs. What is the problem? Anyone here has the same issue?

Thanks in advance.

Bo

[Giuseppe Naselli]

"Bo " <qia...@gmail.com> wrote in message <h0jgqu$pn7$1...@fred.mathworks.com>...

Hi bo,

I am having the same problem, did you manage to solve it?

would you ike to share the solution/

Many thanks

G

[Sean]

"Giuseppe Naselli" <giuseppe...@hotmail.com> wrote in message <lf4cnn$3dq$1...@newscl01ah.mathworks.com>...

I just had this problem and was looking to fix it. Turns out my original had a NaN entry.

Try this: all(isfinite(data))

0 means you have something in your data set thats NaN or INF

if you get a zero try data(isnan(data(:,1),:)=[]