create.densityScatter {RnBeads} | R Documentation

## create.densityScatter

### Description

Creates a density scatterplot highlighting points in sparsely populated plot regions as well as points marked as special in a seperate color

### Usage

    create.densityScatter(df2p, is.special = NULL, dens.subsample = FALSE,
      dens.special = TRUE, sparse.points = 0.01, dens.n = 100,
      add.text.cor = FALSE)

### Arguments

`df2p` | `data.frame` to be plotted. Only the fist two columns are taken into account as x and y coordinates respectively
`is.special` | boolean vector of length equal to the number of rows in `df2p`. Specifies which points should be highlighed seperately in a different color
`dens.subsample` | if the number of points exceeds this number, subsample the number of points for the density estimation to that number. Any non-numeric value disables subsampling.
`dens.special` | Flag indicating whether the points of the special population should be colored according to their density
`sparse.points` | Either percentage (`<=1,>=0`) or the absolute number of points in the sparsely populated area that should be drawn seperately. A value of 0 means that these points will not be drawn.
`dens.n` | passed on to `ggplot2::stat_density2d`: argument: `n`
`add.text.cor` | flag indicating whether a text token with the correlation coefficient should be included in the lower right corner of the plot

### Value

`ggplot` object

### Author(s)

Fabian Mueller

### Examples

    d <- data.frame(x=rnorm(1000),y=rnorm(1000))
    s <- rep(FALSE,1000)
    s[sample(1:length(s),100)] <- TRUE
    create.densityScatter(d,s)

[Package RnBeads version 2.0.1 Index]