Draw line segments

Primitive element drawing a straight segment from (x, y) to (x_end, y_end) for each observation. When map(color = col) is used with a non-color column, colors are auto-scaled (discrete → flexoki palette; numeric → viridis gradient) and an auto-legend is generated.

Usage

seq_segment(data = NULL, mapping = NULL, aesthetics = aes(), ...)

Arguments

data

Optional GRanges.

mapping

Optional SeqMap. Required fields: x, x_end, y, y_end. Defaults: x = start, x_end = end, y0 = 0, y1 = resolved y. color is auto-scaled when mapped to a non-color column.

aesthetics

Optional SeqAes. Supports color, linewidth, linetype, alpha.

...

Additional arguments reserved for future use.

Value

A SeqSegmentR6 instance.

Examples

seq_segment(map(x = start, x_end = end, y = score, y_end = score))
#> <SeqSegment>
#>   Inherits from: <SeqElement>
#>   Public:
#>     .infer_scale_y: function () 
#>     aesthetics: SeqAes
#>     auto_legend: NULL
#>     clone: function (deep = FALSE) 
#>     collect_legend_keys: function () 
#>     coordCanvas: NULL
#>     data: NULL
#>     draw: function () 
#>     initialize: function (data = NULL, mapping = NULL, aesthetics = aes(), ...) 
#>     legend: NULL
#>     mapping: SeqMap
#>     prep: function (layout_track, track_windows) 
#>     resolve: function (track_data = NULL, track_mapping = NULL) 
#>     resolved: NULL
#>     show_legend: TRUE