IRISMustangMetrics (version 1.0.0)

gapsMetric: Gaps and overlaps in a signal

Description

The gapsMetric() function calculates metrics associated with gaps and overlaps in a siesmic signal, i.e. when st consists of more than one Trace.

Usage

gapsMetric(st)

Arguments

st

a Stream object containing a seismic signal

Value

• A list of SingleValueMetric objects is returned.

Details

This function uses the output of the getGaps method of Stream objects to calculate the following metrics: [object Object],[object Object],[object Object],[object Object],[object Object] The requestedStarttime and requestedEndtime slots for the Stream are used to determine gaps before the start of the firstor after the end of the last Trace in the Stream.

Examples

# Open a connection to IRIS DMC webservices
iris <- new("IrisClient")

# Get the waveform
starttime <- as.POSIXct("2012-01-24", tz="GMT")
endtime <- as.POSIXct("2012-01-25", tz="GMT")
st <- getDataselect(iris,"AK","PIN","","VEA",starttime,endtime)

# Calculate the gaps metrics and show the results
metricList <- gapsMetric(st)
dummy <- lapply(metricList, show)