R base functions for inspecting an integrated profile of biological targets
(vpi) object.
# S3 method for class 'vpi'
summary(object, ...)
is.vpi(x)For summary.vpi(): prints summary of the vpi object.
For is.vpi(): TRUE for an object of class vpi, otherwise
FALSE.
A integrated profile of biological targets is a specially classed
data.frame generated by the function integrate_profile() with the
following quantities:
radar: Radar identifier.
datetime: POSIXct date of each profile in UTC.
vid: Vertically Integrated Density in individuals/km^2. vid is a
surface density, whereas dens in vp objects is a volume density.
vir: Vertically Integrated Reflectivity in cm^2/km^2.
mtr: Migration Traffic Rate in individuals/km/h.
rtr: Reflectivity Traffic Rate in cm^2/km/h.
mt: Migration Traffic in individuals/km, cumulated from the start of the
time series up to datetime.
rt: Reflectivity Traffic in cm^2/km, cumulated from the start of the
time series up to datetime.
ff: Horizontal ground speed in m/s.
dd: Horizontal ground speed direction in degrees.
u: Ground speed component west to east in m/s.
v: Ground speed component south to north in m/s.
height: Mean flight height (height weighted by eta) in m above sea level.
# Load the example vertical profile time series and integrate to a vpi
vpi <- integrate_profile(example_vpts)
# Check if it is an object of class vpi
is.vpi(vpi)
#> [1] TRUE
# Get summary info
summary(vpi)
#> Vertically integrated profile(s) (class vpi)
#>
#> radar: KBGM
#> # profiles: 1934
#> time range (UTC): 2016-09-01 00:02:00 - 2016-09-10 11:56:00