read_nc: Read a CATS PRH from a NetCDF file

In FlukeAndFeather/catsr: Tools for using CATS PRH files in R.

Read a CATS PRH from a NetCDF file

Description

Read a CATS PRH from a NetCDF file

Usage

read_nc(nc_path)

Arguments

nc_path

path to the CATS PRH

Value

A tibble with columns:

• dn (num) Matlab datenum of record

• p (num) pressure, or approximate depth in meters

• aw (num x 3) a 3 column matrix with x, y, and z accelerometry in whale frame

• mw (num x 3) a 3 column matrix with x, y, and z magnetometry in whale frame

• gw (num x 3) a 3 column matrix with x, y, and z gyroscope in whale frame

• speed (num) speed of the whale in m/s (as estimated by the jiggle method)

• pitch (num) pitch of the whale in radians

• roll (num) roll of the whale in radians

• head (num) heading of the whale in radians

• dt (POSIXct) datetime of record

• secs (numeric) seconds since start of deployment

• jerk (num) norm of the jerk vector

• x (num) x coordinate of dead-reckoned track, relative to deployment location (m; eastings)

• y (num) y coordinate of dead-reckoned track, relative to deployment location (m; northings)

• z (num) z coordinate of dead-reckoned track, relative to deployment location (m; depth)

And attributes:

• whaleid (chr) e.g. "mn200312-58"

• fs (num) sampling rate in Hz

• tz (chr) local timezone e.g. "Etc/GMT+3" for UTC-3

Examples

## Not run: 
nc_path <- system.file("extdata", "mn200312-58_prh10.nc", package = "catsr")
mn200312_58 <- read_nc(nc_path)

## End(Not run)

FlukeAndFeather/catsr documentation built on March 18, 2022, 8:44 a.m.