oce (version 0.9-6)

binmapAdp: Bin-map an ADP object

Description

Bin-map an ADP object, by interpolating velocities, backscatter amplitudes, etc., to uniform depth bins, thus compensating for the pitch and roll of the instrument. This only makes sense for ADP objects that are in beam coordinates.

Usage

binmapAdp(x, debug=getOption("oceDebug"))

Arguments

x

an object of class "adp"

debug

a flag that turns on debugging. Set to 1 to get a moderate amount of debugging information, or to 2 to get more.

Value

• An object of class "adp".

Bugs

This only works for 4-beam RDI ADP objects.

Details

This is a preliminary function that is still undergoing testing. Once the methods have been tested more, efforts may be made to speed up the processing, either by vectorizing in R or by doing some of the calculation in C.

References

The method was devised by Clark Richards for use in his PhD work at Department of Oceanography at Dalhousie University.

See Also

See adp-class for a discussion of adp objects and notes on the many functions dealing with them.

Examples

library(oce)    
beam <- read.oce("/data/archive/sleiwex/2008/moorings/m09/adp/rdi_2615/raw/adp_rdi_2615.000",
                 from=as.POSIXct("2008-06-26", tz="UTC"),
                 to=as.POSIXct("2008-06-26 00:10:00", tz="UTC"),
                 latitude=47.88126, longitude=-69.73433)
beam2 <- binmapAdp(beam)
plot(enuToOther(toEnu(beam), heading=-31.5))
plot(enuToOther(toEnu(beam2), heading=-31.5))
plot(beam, which=5:8) # backscatter amplitude
plot(beam2, which=5:8)