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overlap (version 0.3.4.1)

densityFit: Fits von Mises kernel density to time-of-day data.

Description

Fits von Mises kernel density to time-of-day data. Intended primarily for internal use: input checking is minimal.

Usage

densityFit(x, grid, bw)

Value

Returns a vector of densities corresponding to the times in grid.

Arguments

x

a vector of times of observations in radians, ie. scaled to [\(0, 2\pi\)].

grid

a vector of times in radians for which the density is required. This could be a vector of equidistant values in [\(0, 2\pi\)], eg. seq(0, 2*pi, length=128), or it could be any set of times for which a density is needed.

bw

bandwidth, the concentration parameter for the von Mises kernel: smaller values result in smoother curves.

Author

C code written by Mike Meredith.

See Also

getBandWidth for appropriate bandwidth.

Examples

Run this code
# Get example data:
data(simulatedData)

densityFit(tigerObs, c(0, pi/2, pi, 3*pi/2, 2*pi), 50)
# Densities at 6am and 6pm are fairly high, at midnight and midday, tiny.
# A crepuscular species!

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