traceStat: Trace statistics

In emanuelhuber/RGPR: Ground-penetrating radar (GPR) data visualisation, processing and delineation

Trace statistics

Description

traceStat is a generic function used to produce results defined by an user function. The user function is applied accross traces (horizontal) using a moving window. Note that if the moving window length is not defined, all traces are averaged into one single trace (the results is similar to apply(x, 1, FUN, ...).

Usage

## S4 method for signature 'GPR'
traceStat(x, w = NULL, FUN = mean, ..., track = TRUE)

Arguments

x	An object of the class GPR
w	A length-one integer vector equal to the window length of the average window. If w = NULL a single trace corresponding to the average trace of the whole profile is returned.
FUN	A function to compute the average (default is mean)
...	Additional parameters for the FUN functions

Value

An object of the class GPR. When w = NULL, this function returns a GPR object with a single trace corresponding to the average trace of the whole radargram. When w is equal to a strictly positive interger this function returns a GPR object with a size identical to x where each trace corresponds to the average of the w neighbouring traces centered on the considered trace.

Examples

data("frenkeLine00")

f0 <- frenkeLine00

f1 <- traceStat(f0)
plot(f1)
# substract the average trace
plot(f0 - f1)

f2 <- traceStat(f0, w = 20)
plot(f2)
plot(f0 - f2)

f3 <- traceStat(f0, w = 20, FUN = median)
plot(f3)
plot(f0 - f3)

emanuelhuber/RGPR documentation built on May 13, 2024, 9:31 p.m.