The R code is based on information in
the Nortek System Integrator Guide (2008) and on postings on the Nortek
``knowledge center'' discussion board. One might assume that the latter is
less authoritative than the former. For example, the inference of cell size
follows advice found at
which contains a typo in an early posting that is
corrected later on.
a connection or a character string giving the name of the file
to load. (For
read.adp.sontek.serial, this is generally a list of
files, which will be concatenated.)
indication of the first profile to read. This can be an
integer, the sequence number of the first profile to read, or a POSIXt time
before which profiles should be skipped, or a character string that converts
to a POSIXt time (assuming UTC timezone). See “Examples”, and make
careful note of the use of the
tz argument. If
from is not
supplied, it defaults to 1.
an optional indication of the last profile to read, in a
format as described for
from. As a special case,
to read the file to the end. If
to is not supplied, then it defaults
an optional indication of the stride length to use while walking through
the file. If this is an integer, then
by-1 profiles are skipped
between each pair of profiles that is read, e.g. the default
means to read all the data. (For RDI files only, there are some
extra features to avoid running out of memory; see “Memory considerations”.)
character string indicating time zone to be assumed in the data.
optional signed number indicating the longitude in degrees East.
optional signed number indicating the latitude in degrees North.
Optional character string specifying the orientation of the
sensor, provided for those cases in which it cannot be inferred from the
data file. The valid choices are
Optional vector holding the distances of bin centres from the sensor. This argument is ignored except for Nortek profilers, and need not be given if the function determines the distances correctly from the data. The problem is that the distance is poorly documented in the Nortek System Integrator Guide (2008 edition, page 31), so the function must rely on word-of-mouth formulae that do not work in all cases.
boolean value indicating whether to indicate the progress
of reading the file, by using
txtProgressBar() or otherwise. The value
monitor is changed to
FALSE automatically, for non-interactive
despike() will be used to clean
anomalous spikes in heading, etc.
if provided, the action item to be stored in the log. (Typically only provided for internal calls; the default that it provides is better for normal calls by a user.)
a flag that turns on debugging. Set to 1 to get a moderate amount of debugging information, or to 2 to get more.
optional additional arguments that some (but not all)
read.adp.*() functions pass to lower-level functions.
An adp object.
The contents of that object make sense for the particular instrument
type under study, e.g. if the data file contains
NMEA strings, then navigational data will be stored in an item
nmea in the
Information on Nortek profilers (including the System Integrator Guide,
which explains the data format byte-by-byte) is available at
https://www.nortekusa.com/. (One must join the site to see the
The Nortek Knowledge Center
https://www.nortekusa.com/en/knowledge-center may be of help if
problems arise in dealing with data from Nortek instruments.
Other things related to adp data: