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19: Statistic Extraction
Wavelet Data Pane
Wavelet data are produced when you run the Wavelet tool on your data. Figure 19-5
shows an Analysis specification consisting of the Wavelet Data pane.
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Figure 19-5. Analysis specification in the Wavelet Data pane
The following are brief descriptions of the numbered items from Figure 19-5.
1. Data pop-up menu. Allows you to choose one of the following data types:
• Power: represents the amplitude squared, which is a measure of the magnitude.
May be used to judge the strength of the particular component being examined.
• Circular Variance: represents a measure of the phase stability. If the value is
close to 0, the phase is very stable; if the value is close to 1, the phase is much
more random. Often used in single-trial analysis to show periods of correlated
and uncorrelated activity across trials.
2. Frequency text boxes. Allows you to specify the frequency window for the analysis.
The Statistic Extraction tool takes the mean of the frequencies in that window,
reducing them into one time series.
176 Net Station Waveform Tools Technical Manual S-MAN-200-WFTR-001 • December 21, 2006
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