Need Help with apply lowpass filter with window method lowpass design

Hello, I'm trying to filter out the noise of my csv file data using lowpass at cut of freq of 5 hz but it give me this error. Any suggestion?

Thank you in advance

[Jakob B. Nielsen]

Look at the documentation for the filter function. The error says "not enough input arguments", because filter requires 3 input arguments, filter(b,a,x).

[Mathieu NOE]

you need to split the tf into its numerator and denominator to use filter

[nam bui]

Hello Mathieu, Can you eloborate on that. I don't understand what you refering to

Thank you

[Mathieu NOE]

hello

filter requires 3 input arguments, filter(b,a,x).

you cannot give a tf object as input argument of filter

your filter must be given as a numerator (b) and a denominator (a)

filter One-dimensional digital filter.

Y = filter(B,A,X) filters the data in vector X with the

filter described by vectors A and B to create the filtered

data Y. The filter is a "Direct Form II Transposed"

implementation of the standard difference equation:

a(1)*y(n) = b(1)*x(n) + b(2)*x(n-1) + ... + b(nb+1)*x(n-nb)

- a(2)*y(n-1) - ... - a(na+1)*y(n-na)

If a(1) is not equal to 1, filter normalizes the filter

coefficients by a(1).

[nam bui]

hello, thank you for replying and I figured it out already.