Error using fir1(8000,0.01)

[tayhym]

Hi, 
I am trying to create a filter, N_order = 8000, and cutoff frequency 0.01. 
Thus I type: b = fir1(8000, 0.01). 

However, the error message is " error: fir2 : grid size must be greater than
half the filter order".

In this case, I read from 
http://octave-matcompat.sourcearchive.com/documentation/20010225-7/fir1_8m-source.html
that it uses fir2 instead of fir1 by default, since the window is not
specified.  

However, what does "grid size" mean, and how should I overcome this? 

I am using octave UPM R8.1 
Thanks,
matt



--
View this message in context: 
http://octave.1599824.n4.nabble.com/Error-using-fir1-8000-0-01-tp4653778.html
Sent from the Octave - General mailing list archive at Nabble.com.