adpRdiFileTrim: Trim an RDI adp File
In dankelley/oce: Analysis of Oceanographic Data

adpRdiFileTrim

R Documentation

Trim an RDI adp File

Description

Create an RDI adp file by copying the first n data chunks (starting with byte 0x7f 0x7f) of another such file. This can be useful in supplying small sample files for bug reports.

Usage

adpRdiFileTrim(infile, n = 100L, outfile, debug = getOption("oceDebug"))

Arguments

`infile`	name of an RDI file.
`n`	integer indicating the number of data chunks to keep. The default is to keep 100 chunks, a common choice for sample files.
`outfile`	optional name of the new RDI file to be created. If this is not supplied, a default is used, by adding `⁠_trimmed⁠` to the base filename, e.g. if `infile` is `"a.000"` then `outfile` will be `a_trimmed.000`.
`debug`	an integer value indicating the level of debugging. If this is 0, then `read.adp.rdi()` proceeds quietly, except for issuing warnings and errors if necessary. If it is 1, then the R code of `read.adp.rdi()` produces some messages. If it is 2, then also the underlying C/C++ code produces a message each time a possible ensemble is detected. If it is 3, then the C/C++ code also produces information on some details of the ensemble. Levels 2 and 3 are mainly for use by the developers.

Value

adpRdiFileTrim() returns the name of the output file, outfile, as provided or constructed.

Sample of Usage

# Can only be run by the developer, since it uses a private file.
file  <- "~/data/archive/sleiwex/2008/moorings/m09/adp/rdi_2615/raw/adp_rdi_2615.000"
if (file.exists(file)) {
    adpRdiFileTrim(file, 9L, "test.000")
}

Author(s)

Dan Kelley

Other things related to adp data: [[,adp-method, [[<-,adp-method, ad2cpCodeToName(), ad2cpHeaderValue(), adp, adp-class, adpAd2cpFileTrim(), adpConvertRawToNumeric(), adpEnsembleAverage(), adpFlagPastBoundary(), adp_rdi.000, applyMagneticDeclination,adp-method, as.adp(), beamName(), beamToXyz(), beamToXyzAdp(), beamToXyzAdpAD2CP(), beamToXyzAdv(), beamUnspreadAdp(), binmapAdp(), enuToOther(), enuToOtherAdp(), handleFlags,adp-method, is.ad2cp(), plot,adp-method, read.adp(), read.adp.ad2cp(), read.adp.nortek(), read.adp.rdi(), read.adp.sontek(), read.adp.sontek.serial(), read.aquadopp(), read.aquadoppHR(), read.aquadoppProfiler(), rotateAboutZ(), setFlags,adp-method, subset,adp-method, subtractBottomVelocity(), summary,adp-method, toEnu(), toEnuAdp(), velocityStatistics(), xyzToEnu(), xyzToEnuAdp(), xyzToEnuAdpAD2CP()