geom_segment_c — geom_segment

geom_segment_c supports coloring segment with continuous colors

geom_segment_c(
  mapping = NULL,
  data = NULL,
  position = "identity",
  lineend = "butt",
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE,
  arrow = NULL,
  arrow.fill = NULL,
  ...
)

Arguments

mapping: aes mapping
data: data
position: position
lineend: lineend
na.rm: logical
show.legend: logical
inherit.aes: logical
arrow: specification for arrow heads, as created by arrow().
arrow.fill: fill color to usse for the arrow head (if closed). NULL means use colour aesthetic.
...: additional parameter

Value

add segment layer

Author

Guangchuang Yu

Examples

set.seed(2019-06-28)
d = data.frame(x = rnorm(10),
              xend = rnorm(10),
              y = rnorm(10),
              yend = rnorm(10),
              v1 = rnorm(10),
              v2 = rnorm(10))
library(ggplot2)
ggplot(d) + geom_segment_c(aes(x = x, xend = xend, y=y, yend =yend, col0 = v1, col1 = v2)) +
   scale_color_viridis_c(name = "continuous colored lines") + 
   theme_minimal() + theme(legend.position=c(.2, .85)) + xlab(NULL) + ylab(NULL)
#> Warning: `aes_string()` was deprecated in ggplot2 3.0.0.
#> ℹ Please use tidy evaluation idioms with `aes()`.
#> ℹ See also `vignette("ggplot2-in-packages")` for more information.
#> ℹ The deprecated feature was likely used in the ggfun package.
#>   Please report the issue at <https://github.com/YuLab-SMU/ggfun/issues>.
#> Warning: Computation failed in `stat_segment_c()`.
#> Caused by error in `if (quote) ...`:
#> ! argument is not interpretable as logical