Filter data with an infinite impulse response (IIR) or finite impulse response (FIR) filter

C Prototype

mxArray *mlfFilter(mxArray **zf, mxArray *b, mxArray *a,
                    mxArray *X, mxArray *zi, mxArray *dim);

C Syntax

#include "matlab.h"

mxArray *b, *a, *X;         /* Required input argument(s) */
mxArray *null_array = NULL; /* Optional input argument(s) */
mxArray *zi, *dim;          /* Optional input argument(s) */
mxArray *zf = NULL;         /* Optional output argument(s) */
mxArray *y = NULL;          /* Return value */

mlfAssign(&y, mlfFilter(NULL,b,a,X,NULL,NULL));
mlfAssign(&y, mlfFilter(&zf,b,a,X,NULL,NULL));
mlfAssign(&y, mlfFilter(&zf,b,a,X,zi,NULL));

mlfAssign(&null_array, mlfZeros(mlfScalar(0),mlfScalar(0),NULL));
mlfAssign(&y, mlfFilter(NULL,b,a,X,zi,dim));
mlfAssign(&y, mlfFilter(&zf,b,a,X,null_array,dim));

MATLAB Syntax

y = filter(b,a,X)
[y,zf] = filter(b,a,X)
[y,zf] = filter(b,a,X,zi)
y = filter(b,a,X,zi,dim)
[...] = filter(b,a,X,[],dim)

See Also

MATLAB filter     Calling Conventions