lunar.illumination.mean: Average Lunar Illumination
Description
Returns the average lunar illumination around specified dates.
Usage
lunar.illumination.mean(
x,
towards = -6,
...,
by = c("date", "hours", "day", "night")
)
Arguments
towards
The directed window size from x
in days.
By default the window looks back 7 days including x
.
...
Other optional arguments are ignored.
by
The exposure interval and integration basis.
The default is to represent a day's illumination by
the illumination at 12 noon UT. The other options integrate
midrange illuminations over hours. Options 'day' and 'night'
are not currently implemented, but will be used to limit
exposure intervals.
The use of an unimplemented option
in a function call will result in a NULL
value
being returned.
Examples
Run this code# NOT RUN {
lunar.illumination.mean(as.Date("2004-03-24"))
# }
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