The function FUN is applied to f in bins specified by
xbreaks and ybreaks.
binApply2D(x, y, f, xbreaks, ybreaks, FUN, include.lowest = FALSE, ...)A list with the following elements:
xbreaks and ybreaks as used, mid-points
xmids and ymids, and result, a matrix containing the
result of applying FUN() to the f values
in the designated bins.
a vector of numerical values.
a vector of numerical values.
a vector of data to which FUN will be applied.
values of x at the boundaries between the
bins; calculated using pretty() if not supplied.
as xbreaks, but for y.
function that is applied to the f values
in each (x,y) bin. This must take two numeric vectors
as input, and return a single numeric value.
logical value indicating whether to include
x values that equal xbreaks[1] and y values that equal
ybreaks[1]. See “Details”.
optional arguments to pass to FUN.
Dan Kelley
The division into bins is done with cut(), to which include.lowest
is passed. By default, the x bins are open at the left and closed
on the right, and the y bins are open at the bottom and closed
at the top. However, if include.lowest is TRUE, then those
boundary points are included in the calculation.
Other bin-related functions:
binApply1D(),
binAverage(),
binCount1D(),
binCount2D(),
binMean1D(),
binMean2D()