IRISSeismic (version 1.6.6)

Stream-class: Class "Stream"

Description

A Stream object containing a list of Trace objects.

Objects from the Class

Objects are typically created by calls to getDataselect.

Slots

url:

Object of class "character": URL request used to generate this Stream.

requestedStarttime:

Object of class "POSIXct": starttime used when requesting data with getDataselect.

requestedEndtime:

Object of class "POSIXct": endtime used when requesting data with getDataselect.

act_flags:

Object of class "integer": Accumulators for the act_flags bits in each miniSEED record.

io_flags:

Object of class "integer": Accumulators for the io_flags bits in each miniSEED record.

dq_flags:

Object of class "integer": Accumulators for the dq_flags bits in each miniSEED record.

timing_qual:

Object of class "numeric": Average timing quality associated with miniSEED records.

traces:

Object of class "list": List of Trace objects.

Methods

getGaps

signature(x="Stream"): returns information on data dropouts between Traces; see getGaps

getUpDownTimes

signature(x="Stream", min_signal="numeric", min_gap="numeric"): returns a vector of datetimes associated with channel up/down transitions; see getUpDownTimes

length

signature(x="Stream"): returns the total number of data points in all Traces

max

signature(x="Stream"): returns the overall data maximum for all data in all Traces

median

signature(x="Stream", na.rm= "logical"): returns the overall data median for all data in all Traces

mean

signature(x="Stream"): returns the overall data mean for all data in all Traces

mergeTraces

signature(x="Stream", fillMethod="fillNA"): returns a new Stream object where all Traces have been merged into a single Trace mergeTraces

min

signature(x="Stream"): returns the overall data minimum for all data in all Traces

multiplyBy

signature(x="Stream", y="numeric"): returns a new Stream object where the data in every Trace have been multiplied by y; see multiplyBy

parallelLength

signature(x="Stream"): returns a vector of data lengths, one for each Trace

parallelMax

signature(x="Stream"): returns a vector of data maxima, one for each Trace

parallelMedian

signature(x="Stream", na.rm= "logical"): returns a vector of data medians, one for each Trace

parallelMean

signature(x="Stream"): returns a vector of data means, one for each Trace

parallelMin

signature(x="Stream"): returns a vector of data minima, one for each Trace

parallelRms

signature(x="Stream"): returns a vector of RMS calculations, one for each Trace; see rmsVariance

parallelRmsVariance

signature(x="Stream"): returns a vector of RMS variance calculations, one for each Trace; see rmsVariance

parallelSd

signature(x="Stream", na.rm="logical"): returns a vector of standard deviation calculations, one for each Trace

plot

signature(x="Stream"): default plot of the merged Traces in a Stream with appropriate labeling

plotUpDownTimes

signature(x="Stream", min_signal="numeric", min_gap="numeric"): plots the times at which a Stream transitions from data collection to non-collection (on/off); see getUpDownTimes

rms

signature(x="Stream"): returns the overall Root Mean Square amplitude for all data in all Traces; see rmsVariance

rmsVariance

signature(x="Stream"): returns the overall RMS variance for all data in all Traces; see rmsVariance

sd

signature(x="Stream", na.rm="logical"): returns the overall standard deviations for all data in all Traces

slice

signature(x="Stream", starttime="POSIXct", endtime="POSIXct"): returns a new Stream sliced out of an existing Stream (see slice)

uniqueIds

signature(x="Stream"): returns a vector of SNCLQ identifiers, one for each Trace

Author

Jonathan Callahan

Examples

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

starttime <- as.POSIXct("2012-01-24", tz="GMT")
endtime <- as.POSIXct("2012-01-25", tz="GMT")

# Get the waveform
st <- getDataselect(iris,"AK","PIN","","BHZ",starttime,endtime)
min(st)
median(st)
mean(st)
max(st)
sd(st)
rms(st)
rmsVariance(st)
}