THEW File FORMAT and reading procedures |
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ECG File Format:
The ECG signals can be downloaded from the THEW server in ISHNE format. To read the Holter ECG ISHNE format please refer to the description provided here . Example of ISHNE files (ECG and annotation) and reading procedure are provided below for C++ and Matlab environments.
MATLAB and C++ reading functions (to download):
To read the files from the THEW, we provide MATLAB and C++ procedures to be downloaded from the links below.
To read ECG and annotation files in c++:
ReadIshne.cpp
To read the ECG and annotation files in MATLAB:
read_ishne.m
and
read_binAnn.m
To read the ECG and annotation files in MATLAB directly from the THEW server
(by Daniel Guldenring, Ulster Unversity , UK):
License terms for
JAVA SFTP Library
License terms for
LicenseMatlabSources
THEW access
M file code example
THEW dynamic Java class
sFtpThew.jar
Function to add a *.jar file to the dynamic Java class path
sFtpAddDynPath
Function to connect to the THEW server:
sFtpConnect.m
Function to disconnect to the THEW server:
sFtpDisconnect.m
Function to open file on the THEW server:
sFtpFopen.m
Function to close file on the THEW server:
sFtpFclose.m
Function to seek file on the THEW server:
sFtpFseek.m
Function to return current location in the file on the THEW server:
sFtpFtell.m
Function to return contents of a directory from the remote THEW server:
sFtpLs.m
Function to read the annotation files from THEW server:
sFtpRead_binAnn.m
Function to read the waveform files from THEW server:
sFtpRead_ishne.m
Function to set the type of the data read form the THEW server:
sFtpTypeCast.m
Examples of ECG and annotation files (to download):
ECG files (click to download) | |
ASCII (5 min duration, 3 leads, 200 HZ) |
|
ISHNE (25 min duration, 3 leads, 200HZ) |
|
Annotation files (click to download) | |
ASCII (25 minutes) |
|
THEW Binary Annotation File (25 minutes) |
High-resolution 12-lead Holter (click to download) | |
ISHNE recording+ annotation file (10 minutes) |
S1123.zip
(zipped) |
ECG ANNOTATION Format:
The annotation information from the Holter ECG signals can be extracted from the THEW Client application in binary format following the annotation format described here or in ASCII format. The available cardiac beast anoation are defined as follow: