Description Usage Arguments Aesthetics Computed variables Author(s) Examples
This set of geoms makes it possible to connect points using straight lines.
Before you think ggplot2::geom_segment()
and
ggplot2::geom_path()
, these functions have some additional tricks
up their sleeves. geom_link connects two points in the same way as
ggplot2::geom_segment()
but does so by interpolating multiple
points between the two. An additional column called index is added to the
data with a sequential progression of the interpolated points. This can be
used to map color or size to the direction of the link. geom_link2 uses the
same syntax as ggplot2::geom_path()
but interpolates between the
aesthetics given by each row in the data.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | stat_link(mapping = NULL, data = NULL, geom = "path",
position = "identity", na.rm = FALSE, show.legend = NA, n = 100,
inherit.aes = TRUE, ...)
stat_link2(mapping = NULL, data = NULL, geom = "path_interpolate",
position = "identity", na.rm = FALSE, show.legend = NA, n = 100,
inherit.aes = TRUE, ...)
geom_link(mapping = NULL, data = NULL, stat = "link",
position = "identity", arrow = NULL, lineend = "butt", na.rm = FALSE,
show.legend = NA, inherit.aes = TRUE, n = 100, ...)
geom_link2(mapping = NULL, data = NULL, stat = "link2",
position = "identity", arrow = NULL, lineend = "butt", na.rm = FALSE,
show.legend = NA, inherit.aes = TRUE, n = 100, ...)
geom_link0(mapping = NULL, data = NULL, stat = "identity",
position = "identity", ..., arrow = NULL, lineend = "butt",
linejoin = "round", na.rm = FALSE, show.legend = NA,
inherit.aes = TRUE)
|
mapping |
Set of aesthetic mappings created by |
data |
The data to be displayed in this layer. There are three options: If A A |
geom |
The geometric object to use display the data |
position |
Position adjustment, either as a string, or the result of a call to a position adjustment function. |
na.rm |
If |
show.legend |
logical. Should this layer be included in the legends?
|
n |
The number of points to create for each segment |
inherit.aes |
If |
... |
other arguments passed on to |
stat |
The statistical transformation to use on the data for this layer, as a string. |
arrow |
Arrow specification, as created by |
lineend |
Line end style (round, butt, square) |
linejoin |
Line join style (round, mitre, bevel) |
geom_link understand the following aesthetics (required aesthetics are in bold):
x
y
xend
yend
color
size
linetype
alpha
lineend
geom_link2 understand the following aesthetics (required aesthetics are in bold):
x
y
color
size
linetype
alpha
lineend
The interpolated point coordinates
The progression along the interpolation mapped between 0 and 1
Thomas Lin Pedersen
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # Lets make some data
lines <- data.frame(
x = c(5, 12, 15, 9, 6),
y = c(17, 20, 4, 15, 5),
xend = c(19, 17, 2, 9, 5),
yend = c(10, 18, 7, 12, 1),
width = c(1, 10, 6, 2, 3),
colour = letters[1:5]
)
ggplot() + geom_link(aes(x = x, y = y, xend = xend, yend = yend,
colour = colour, alpha = ..index..,
size = ..index..),
data = lines)
ggplot() + geom_link2(aes(x = x, y = y, colour = colour, size = width,
group = 1),
data = lines, lineend = 'round', n = 500)
|
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