// File: example9.cs I. Henry February 18 2005
//
// C# translation of example9.c from the WFDB Programmer's Guide
//
// Copyright (C) 2005 Isaac C. Henry (ihenry@physionet.org)
using System;
using Wfdb;
public class example9 {
static void Main(string[] argv) {
int btype, i, j, nbeats = 0, nsig, hwindow, window, stoptime = 0;
WFDB_Anninfo a = new WFDB_Anninfo();
WFDB_Annotation annot = new WFDB_Annotation();
if (argv.Length < 2) {
Console.WriteLine(
"usage: example9 annotator record [beat-type from to]");
// Unlike C programs, C# programs do not have any foolproof way
// to discover their own names, so the name is given as a constant
// above. The command needed to run this program within a VM
// is platform-dependent and likely to be more complex.
Environment.Exit(1);
}
a.name = argv[0]; a.stat = wfdb.WFDB_READ;
if ((nsig = wfdb.isigopen(argv[1], null, 0)) < 1) Environment.Exit(2);
WFDB_SiginfoArray s = new WFDB_SiginfoArray(nsig);
WFDB_SampleArray v = new WFDB_SampleArray(nsig);
WFDB_SampleArray vb = new WFDB_SampleArray(nsig);
if (wfdb.wfdbinit(argv[1], a, 1, s.cast(), (uint)nsig) != nsig)
Environment.Exit(3);
hwindow = wfdb.strtim(".05"); window = 2*hwindow + 1;
long[,] sum = new long[nsig,window];
btype = (argv.Length > 2) ? wfdb.strann(argv[2]) : wfdb.NORMAL;
if (argv.Length > 3) wfdb.iannsettime(wfdb.strtim(argv[3]));
WFDB_Siginfo s_0_ = s.getitem(0);
if (argv.Length > 4) {
if ((stoptime = wfdb.strtim(argv[4])) < 0)
stoptime = -stoptime;
if (s_0_.nsamp > 0 && stoptime > s_0_.nsamp)
stoptime = s_0_.nsamp;
}
else stoptime = s_0_.nsamp;
if (stoptime > 0) stoptime -= hwindow;
while (wfdb.getann(0, annot) == 0 && annot.time < hwindow)
;
do {
if (annot.anntyp != btype) continue;
wfdb.isigsettime(annot.time - hwindow - 1);
wfdb.getvec(vb.cast());
for (j = 0; j < window && wfdb.getvec(v.cast()) > 0; j++)
for (i = 0; i < nsig; i++)
sum[i,j] += v.getitem(i) - vb.getitem(i);
nbeats++;
} while (wfdb.getann(0, annot) == 0 &&
(stoptime == 0L || annot.time < stoptime));
if (nbeats < 1) {
Console.WriteLine("example9: no `" + wfdb.annstr(btype) +
"' beats found");
Environment.Exit(4);
}
Console.WriteLine("Average of {0} `{1}' beats:", nbeats,
wfdb.annstr(btype));
for (j = 0; j < window; j++)
for (i = 0; i < nsig; i++)
Console.Write( "{0:G6}{1}", (double)sum[i,j]/nbeats,
((i < nsig-1) ? "\t" : "\n"));
wfdb.wfdbquit();
}
}