Computes and displays a histogram of the values of a spatial function
of class "funxy".
# S3 method for funxy
hist(x, …, xname)A pixel image (object of class "funxy").
Optional. Character string to be used as the
name of the dataset x.
An object of class "histogram" as returned
by hist.default. This object can be
plotted.
This function computes and (by default) displays a histogram
of the values of the function x.
An object of class "funxy"
describes a function of spatial location. It is a function(x,y,..)
in the R language, with additional attributes.
The function hist.funxy is a method for the generic
function hist for the class "funxy".
The function is first converted to a pixel image using as.im,
then hist.im is called to produce the histogram.
Any arguments in ... are passed to as.im
to determine the pixel resolution,
or to hist.im to determine the histogram breaks
and to control or suppress plotting.
Useful arguments include W for the spatial domain,
eps,dimyx for pixel resolution, main for the main title.
spatialcdf for the cumulative distribution function
of an image or function.
For other statistical graphics such as Q-Q plots,
use as.im(X)[] to extract the pixel values of image X,
and apply the usual statistical graphics commands.
# NOT RUN {
f <- funxy(function(x,y) {x^2}, unit.square())
hist(f)
# }
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