Apnea Detection from the ECG 1.0.0
(4,379 bytes)
/* rrlist.c Joe Mietus Apr 1 2011 */
/*
rrlist.c Joe Mietus Dec 19 2001
_______________________________________________________________________________
rrlist: List R-R intervals
Copyright (C) 2002 Joe Mietus
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA.
You may contact the author by e-mail (joe at physionet dot org) or postal mail
(MIT Room E25-505A, Cambridge, MA 02139 USA). For updates to this software,
please visit PhysioNet (http://www.physionet.org/).
_______________________________________________________________________________
List R-R intervals
Usage: rrlist annotator tape [options]
options are :
[-f start] : begin at time 'start'
[-t end] : end at time 'end'
[-l length] : output for duration 'length'
[-h] : output time in hours in first column
[-m] : output time in minutes in first column
[-s] : output time in sec in first column
[-a annotation] : list only intervals between consecutive annotations
*/
#include <stdio.h>
#include <wfdb/wfdb.h>
#include <wfdb/ecgmap.h>
main(argc, argv)
int argc;
char *argv[];
{
int i, annotation;
int hflag, mflag, sflag, aflag;
long start, end, length;
double sps;
struct WFDB_anninfo ai[1];
struct WFDB_ann annot[2];
if (argc < 3) {
usage(argv[0]);
exit(1);
}
hflag = mflag = sflag = aflag = 0;
start = end = length = 0L;
sps = sampfreq(argv[2]);
ai[0].name = argv[1];
ai[0].stat = WFDB_READ;
if (annopen(argv[2], ai, 1) < 0)
exit(2);
for (i=2; ++i < argc && *argv[i] == '-'; ) {
switch(argv[i][1]) {
case 'f': start = strtim(argv[++i]);
break;
case 't': end = strtim(argv[++i]);
break;
case 'l': length = strtim(argv[++i]);
break;
case 'h': hflag = 1;
break;
case 'm': mflag = 1;
break;
case 's': sflag = 1;
break;
case 'a': annotation = strann(argv[++i]);
aflag = 1;
break;
default: usage(argv[0]);
exit(1);
}
}
if (end == 0L && length != 0L)
end = start + length;
if (iannsettime(start) < 0)
exit(2);
start = 0L;
while (getann(0, &annot[0]) >= 0) {
if (isqrs(annot[0].anntyp))
if ((!aflag && isqrs(annot[0].anntyp)) ||
(aflag && annot[0].anntyp == annotation))
break;
}
while (getann(0, &annot[1]) >= 0 &&
(annot[1].time <= end || end == 0L)) {
if ((!aflag && isqrs(annot[1].anntyp)) ||
(aflag && annot[0].anntyp == annotation &&
annot[1].anntyp == annotation)) {
if (hflag)
printf("%.8f ", (annot[1].time-start)/(sps*3600));
else if (mflag)
printf("%.6f ", (annot[1].time-start)/(sps*60));
else if (sflag)
printf("%.3f ", (annot[1].time-start)/sps);
printf("%.3f %s\n", (annot[1].time - annot[0].time)/sps,
annstr(annot[1].anntyp));
}
if (isqrs(annot[1].anntyp)) {
annot[0] = annot[1];
}
}
exit(0);
}
usage(prog)
char *prog;
{
fprintf(stderr, "Usage : %s annotator tape [options]\n\n", prog);
fprintf(stderr, " options are :\n");
fprintf(stderr, " [-f start] : begin at time 'start'\n");
fprintf(stderr, " [-t end] : end at time 'end'\n");
fprintf(stderr, " [-l length] : output for duration 'length'\n");
fprintf(stderr, " [-h] : output time in hours in first column\n");
fprintf(stderr, " [-m] : output time in minutes in first column\n");
fprintf(stderr, " [-s] : output time in seconds in first column\n");
fprintf(stderr, " [-a annotation] : ");
fprintf(stderr, " list only intervals between consecutive annotations\n");
}