Infer an Item From a Nortek AD2CP File Header
Arguments
- x
an adp object that holds AD2CP data.
- key
Character value that identifies a particular line in the file header.
- item
Character value indicating the name of the item sought.
- numeric
Logical value indicating whether to convert the return value from a string to a numerical value.
- default
Optional value to be used if the item is not found in the header, or if the header is
NULL(as in the case of a split-up file that lacks the initial header information)
Value
String or number interpreted from the x[["text"]], or NULL,
if the desired item is not found there, or if x is not of the required
class and variety.
Sample of Usage
if (file.exists("a.ad2cp")) {
d <- read.oce("a.ad2cp")
# The examples start with the line in x[["text"]][[1]]; note that in the second
# example, it would be insuficient to use a key of "BEAMCFGLIST", because that will
# yield 4 lines, and the function is not designed to handle that.
# ID,STR=\"Signature1000\",SN=123456
type <- ad2cpHeaderValue(d, "ID", "STR", numeric=FALSE)
serialNumber <- ad2cpHeaderValue(d, "ID", "SN")
# BEAMCFGLIST,BEAM=1,THETA=25.00,PHI=0.00,FREQ=1000,BW=25,BRD=1,HWBEAM=1,ZNOM=60.00
beam1Angle <- ad2cpHeaderValue(d, "BEAMCFGLIST,BEAM=1", "THETA")
frequency <- ad2cpHeaderValue(d, "BEAMCFGLIST,BEAM=1", "FREQ", default=NA)
}See also
Other things related to adp data:
[[,adp-method,
[[<-,adp-method,
ad2cpCodeToName(),
adp,
adp-class,
adpAd2cpFileTrim(),
adpConvertRawToNumeric(),
adpEnsembleAverage(),
adpFlagPastBoundary(),
adpRdiFileTrim(),
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()
Other things related to ad2cp data:
ad2cpCodeToName(),
adpAd2cpFileTrim(),
is.ad2cp(),
read.adp.ad2cp()