IRISSeismic (version 1.0.5)

McNamaraBins: McNamara Binning

Description

The McNamaraBins() function implements the binning algorithm specified in the "Data Preparation and Processing" section of http://pubs.usgs.gov/of/2005/1438/pdf/OFR-1438.pdf{Seismic Noise Analysis System Using Power Spectral Density Probability Density Functions}.

Usage

McNamaraBins(df, loFreq, hiFreq, alignFreq)

Arguments

df

an Rdataframe object

loFreq

optional lo end of frequency binning range (default=.005)

hiFreq

optional hi end of frequency binning range (default=10)

alignFreq

optional alignment frequency for determining frequency bins (default=0.1)

Value

• A dataframe containing binned values is returned with the same column names as the incoming df argument.

Details

The McNamaraBins() function accepts a dataframe with an arbitrary number of columns. At least one of the columns must be named 'freq' and must contain frequency values. These frequencies will be used to assign all associated values into appropriate bins according to the McNamara algorithm:

Frequencies for binning are generated at 1/8 octave intervals aligned to alignFreq. Binned values associated with each frequency bin are calculated by averaging incoming values over an entire octave centered on that frequency.

References

http://pubs.usgs.gov/of/2005/1438/pdf/OFR-1438.pdf{Seismic Noise Analysis System Using Power Spectral Density Probability Density Functions} (McNamara and Boaz 2005)

See Also

McNamaraPSD