ECG Database Applications Guide
Table of Contents
rdsamp - read DB signal files
rdsamp -r record [ options ... ]
rdsamp reads signal files for the specified record and writes
the samples as decimal numbers on the standard output. If no options are
provided, rdsamp starts at the beginning of the record and prints all
samples. Each line of output contains the sample number and samples from
each signal, beginning with channel 0, separated by tabs.
- -f time
- Begin at the specified time. By default, rdsamp starts at the beginning
of the record.
- Print a usage summary.
- Read the signal files in high-resolution
mode (default: standard mode). These modes are identical for ordinary records.
For multifrequency records, the standard decimation of oversampled signals
to the frame rate is suppressed in high-resolution mode (rather, all other
signals are resampled at the highest sampling frequency).
- Print times
in seconds and milliseconds, and values in physical units. By default,
rdsamp prints times in sample intervals and values in A/D units.
- -s signal-list
- Print only the signals named in the signal-list (one or more input signal
numbers, separated by spaces; default: print all signals). This option
may be used to re-order or duplicate signals.
- -t time
- Stop at the specified
time. By default, rdsamp stops at the end of the record.
- Print column
The shell variable DB should be set and exported (see setdb(1)
The first edition of the MIT-BIH Arrhythmia Database CD-ROM,
the first and second editions of the European ST-T Database CD-ROM, and
the first edition of the MIT-BIH Polysomnographic Database CD-ROM contain
versions of rdsamp that use an older command syntax (still supported by
the current version but not described here). Refer to bin.doc in the CD-ROM
directory that contains rdsamp for further information.
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