wkde2d {Nebulosa} | R Documentation

## Weighted 2D kernel density estimation

### Description

Weighted 2D kernel density estimation

### Usage

    wkde2d(x, y, w, h, adjust = 1, n = 100, lims = c(range(x), range(y)))

### Arguments

`x` | Dimension 1
`y` | Dimension 2
`w` | Weight variable
`h` | vector of bandwidths for x and y directions. Defaults to normal reference bandwidth (ks::hpi). A scalar value will be taken to apply to both directions.
`adjust` | Bandwidth adjustment
`n` | Number of grid points in each direction. Can be scalar or a length-2 integer vector.
`lims` | The limits of the rectangle covered by the grid as c(xl, xu, yl, yu).

### Value

A list of three components.

- `x, y` The x and y coordinates of the grid points, vectors of length n.

- `z` An n[1] by n[2] matrix of the weighted estimated density: rows correspond to the value of x, columns to the value of y.

### Author(s)

Jose Alquicira-Hernandez

### Examples

    set.seed(1)
    x <- rnorm(100)

    set.seed(2)
    y <- rnorm(100)

    set.seed(3)
    w <- sample(c(0, 1), 100, replace = TRUE)

    dens <- Nebulosa:::wkde2d(x, y, w)

[Package Nebulosa version 1.2.0 Index]