Labview equivalent to matlab filter function

Question

Hi
I have a script In Matlab that is using the built-in filter function in matlab.
y = filter(B,A,x);
were x is the signal to be filtered and A/B is the filter coefficients.
Is there a labview function that gives my the same y as Matlab does if x, A and B is the same.
Best wishes 

Answer 1

sorry. I post some Matlab code and VI to demonstrate.
Matlab code:
clear;
x = 1:12;
A = [1 2 1 1];
B = [1 1 2 1];
y = filter(B,A,x)
%y =
%     1     1     4     2     8     0    17   -10    40   -45   107  -157
y2 = filter(B,A,x, [0 1 0]')
%y2 =
%     1     2     2     5     3     9     1    18    -9    41   -44   108
 and my VI is attached (screenshot). My Y is correct to the first filter call to matlab (y = y in both lw and matlab). And that is good. But the other call use a the vector Zi = [0 1 0] and from Matlabs help
[Y,Zf] = FILTER(B,A,X,Zi) gives access to initial and final
    conditions, Zi and Zf, of the delays.  Zi is a vector of length
    MAX(LENGTH(A),LENGTH(B))-1, or an array with the leading dimension 
    of size MAX(LENGTH(A),LENGTH(B))-1 and with remaining dimensions 
    matching those of X.
 Any idees how this can be done in LabView or what the Zi does in the Matlab implementation?
Message Edited by Tudor on 02-11-2010 09:29 AM
Attachments:
lw-filter.jpg ‏55 KB