RSEIS: DECIMATE.SEISN – R documentation

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DECIMATE.SEISN

Decimate a set of traces

Decimate, or reduce the sample rate of a set of traces stored in RSEIS format

DECIMATE.SEISN(TH, sel=1:length(TH$JSTR), dec=5 ,
 type="LP", proto="C1" , fl=2,  fh=10, RM=FALSE, zp=TRUE )

`TH`	RSEIS list
`sel`	numeric, which traces to select
`dec`	numeric, number of samples to skip
`type`	type of filter (see butfilt)
`proto`	filter proto type
`fl`	low pass frequency cut off
`fh`	high pass frequency cut off
`RM`	Remove mean value from trace, default=FALSE
`zp`	zero phase filter, default=TRUE

Reduces the number of samples by skipping every "dec" sample. A filter is applied prior to decimation.

an RSEIS list.

The dt, n and t2 are modified in info.

Jonathan M. Lees<jonathan.lees@unc.edu>