ggellipse {seqsetvis} | R Documentation

## returns a ggplot with ellipses drawn using specified parameters used by ssvFeatureVenn and ssvFeatureEuler

### Description

uses eulerr's non-exported ellipse drawing coordinate function

### Usage

    ggellipse(
      xcentres,
      ycentres,
      r,
      r2 = r,
      phi = rep(0, length(xcentres)),
      circle_colors = NULL,
      group_names = LETTERS[seq_along(xcentres)],
      line_alpha = 1,
      fill_alpha = 0.3,
      line_width = 2,
      n_points = 200
    )

### Arguments

`xcentres` | numeric x-coord of centers of ellipses
`ycentres` | numeric y-coord of centers of ellipses, must have same length as xcentres
`r` | numeric radius1 of ellipse, must have length of 1 or match length of xcentres
`r2` | numeric radius2 of ellipse, must have length of 1 or match length of xcentres. same as r by default.
`phi` | numeric phi of ellipse, must have length of 1 or match length of xcentres. 0 by default.
`circle_colors` | character of rcolors or hex colors or NULL. if null safeBrew of Dark2 is used
`group_names` | character/factor names of color/fill groups. capital letters by default.
`line_alpha` | numeric [0,1] alpha of lines, 1 by default
`fill_alpha` | numeric [0,1] alpha of fill, .3 by default.
`line_width` | numeric > 0. passed to size. 2 by default
`n_points` | integer > 1. number of points to approximate circle with. 200 by default

### Value

a ggplot containing ellipses

### Examples

    ggellipse(xcentres = c(1, 1, 2),
        ycentres = c(2, 1, 1),
        r = c(1, 2, 1))
    ggellipse(xcentres = c(1, 1, 2),
        ycentres = c(2, 1, 1),
        r = c(1, 2, 1),
        fill_alpha = 0,
        group_names = paste("set", 1:3))
    ggellipse(xcentres = c(1, 1, 2),
        ycentres = c(2, 1, 1),
        r = c(1, 2, 1),
        circle_colors = c("red", "orange", "yellow"),
        line_alpha = 0,
        group_names = paste("set", 1:3))

[Package seqsetvis version 1.8.0 Index]