kernel.factor

0th

Percentile

Scale factor for density kernel

Returns a scale factor for the kernels used in density estimation for numerical data.

Keywords
methods, smooth, nonparametric
Usage
kernel.factor(kernel = "gaussian")
Arguments
kernel

String name of the kernel. Options are "gaussian", "rectangular", "triangular", "epanechnikov", "biweight", "cosine" and "optcosine". (Partial matching is used).

Details

Kernel estimation of a probability density in one dimension is performed by density.default using a kernel function selected from the list above.

This function computes a scale constant for the kernel. For the Gaussian kernel, this constant is equal to 1. Otherwise, the constant \(c\) is such that the kernel with standard deviation \(1\) is supported on the interval \([-c,c]\).

For more information about these kernels, see density.default.

Value

A single number.

See Also

density.default, dkernel, kernel.moment, kernel.squint

Aliases
  • kernel.factor
Examples
# NOT RUN {
   kernel.factor("rect")
   # bandwidth for Epanechnikov kernel with half-width h=1
   h <- 1
   bw <- h/kernel.factor("epa")
# }
Documentation reproduced from package spatstat, version 1.55-1, License: GPL (>= 2)

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