dens2qd {fdadensity}

Function for converting Densities to Quantile Densities

Description

Function for converting Densities to Quantile Densities

Usage

dens2qd(
  dens,
  dSup = seq(0, 1, length.out = length(dens)),
  qdSup = seq(0, 1, length.out = length(dens)),
  useSplines = TRUE
)

Arguments

dens

density on dSup

dSup

support for Density domain - max and min values mark the boundary of the support.

qdSup

support for quantile density domain - must begin at 0 and end at 1

useSplines

fit spline to the qd when doing the numerical integration (default: TRUE)

Value

qd quantile density values on qdSup

References

Functional Data Analysis for Density Functions by Transformation to a Hilbert space, Alexander Petersen and Hans-Georg Mueller, 2016

See Also

normaliseDensities

Examples

x <- seq(0,2,length.out =512)
y <- rep(0.5,length.out =512)
y.qd <- dens2qd(dens=y, dSup = x) # should equate # 2