The time-matched extraction wizard allows the extraction of data related to a range of reference time points. Time is always the reference and the data can be of the following types: values, durations and counts.
There are two possible extraction modes:
The software retrieves the data at the exact time defined by the reference time point.
Application example: Beat to beat analysis
Eg: The range of reference time points is defined by the R peaks and the selected data is QT duration. The extraction wizard retrieves the QT interval value related to each R peak. If there is a detection issue (eg: no T-end detected), then cell data for the QT interval shows N/A.
Time matching window
The software retrieves the data in a time window specified by the user (in second, before and after the reference time point). There are 4 options for result display:
- First value: provides the first value in the specified time window.
- Last value: provides the last value in the specified time window.
- Closest value: provides the closest value to the reference time given.
- Mean of value: provides the mean of all value available in the specified time window.
Exact matching mode
The wizard function uses the same principle as the standard extraction.
- Extract your range of reference time points.
- Select the file and data you want to extract.
- To define the reference time points: select in the Excel® table the time range for which related data will be extracted (ensure the whole range is selected).
- Choose the output type (value, duration or count).
Time-matching window mode
- Unselect the Exact matching option, and fill in the Parameters of time-matching window.
- Define the search window by giving the duration before and after the reference time.
- Select the computation method (First value by default).