Description Usage Arguments Details geom_label_repel Alignment Examples
geom_text_repel
adds text directly to the plot.
geom_label_repel
draws a rectangle underneath the text, making it
easier to read. The text labels repel away from each other and away from
the data points.
1 2 3 4 5 6 7 | geom_text_sciname_repel(mapping = NULL, data = NULL, stat = "identity",
position = "identity", parse = TRUE, ..., box.padding = 0.25,
point.padding = 1e-06, segment.colour = NULL, segment.color = NULL,
segment.size = 0.5, segment.alpha = NULL, min.segment.length = 0.5,
arrow = NULL, force = 1, max.iter = 2000, nudge_x = 0, nudge_y = 0,
xlim = c(NA, NA), ylim = c(NA, NA), na.rm = FALSE, show.legend = NA,
direction = c("both", "y", "x"), seed = NA, inherit.aes = TRUE)
|
mapping |
Set of aesthetic mappings created by |
data |
A data frame. If specified, overrides the default data frame defined at the top level of the plot. |
stat |
The statistical transformation to use on the data for this layer, as a string. |
position |
Position adjustment, either as a string, or the result of a call to a position adjustment function. |
parse |
If TRUE, the labels will be parsed into expressions and displayed as described in ?plotmath |
... |
other arguments passed on to
|
box.padding |
Amount of padding around bounding box, as unit or number.
Defaults to 0.25. (Default unit is lines, but other units can be specified
by passing |
point.padding |
Amount of padding around labeled point, as unit or
number. Defaults to 0. (Default unit is lines, but other units can be
specified by passing |
segment.colour, segment.color |
Colour of the line segment. Defaults to the same colour as the text. In the unlikely event you specify both US and UK spellings of colour, the US spelling will take precedence. |
segment.size |
Width of line segment connecting the data point to the text label, in mm. |
segment.alpha |
Transparency of the line segment. Defaults to the same transparency as the text. |
min.segment.length |
Skip drawing segments shorter than this, as unit or
number. Defaults to 0.5. (Default unit is lines, but other units can be
specified by passing |
arrow |
specification for arrow heads, as created by |
force |
Force of repulsion between overlapping text labels. Defaults to 1. |
max.iter |
Maximum number of iterations to try to resolve overlaps. Defaults to 2000. |
nudge_x, nudge_y |
Horizontal and vertical adjustments to nudge the starting position of each text label. |
xlim, ylim |
Limits for the x and y axes. Text labels will be constrained to these limits. By default, text labels are constrained to the entire plot area. |
na.rm |
If |
show.legend |
logical. Should this layer be included in the legends?
|
direction |
"both", "x", or "y" – direction in which to adjust position of labels |
seed |
Random seed passed to |
inherit.aes |
If |
These geoms are based on geom_text
and
geom_label
. See the documentation for those
functions for more details. Differences from those functions are noted
here.
Text labels have height and width, but they are physical units, not data units. The amount of space they occupy on that plot is not constant in data units: when you resize a plot, labels stay the same size, but the size of the axes changes. The text labels are repositioned after resizing a plot.
geom_label_repel
Currently geom_label_repel
does not support the rot
parameter
and is considerably slower than geom_text_repel
. The fill
aesthetic controls the background colour of the label.
The repulsive geoms reposition text labels to avoid overlap, so the following parameters are not supported:
position
check_overlap
The parameters hjust
and vjust
are supported, but they only
control the intial positioning and repulsive forces may disrupt alignment.
Alignment will be preserved if the force is limited to not act in the
direction of alignment using the direction
parameter.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | p <- ggplot(mtcars,
aes(wt, mpg, label = rownames(mtcars), colour = factor(cyl))) +
geom_point()
# Avoid overlaps by repelling text labels
p + geom_text_repel()
# Labels with background
p + geom_label_repel()
## Not run:
p + geom_text_repel(family = "Times New Roman",
box.padding = 0.5)
# Add aesthetic mappings
p + geom_text_repel(aes(alpha=wt, size=mpg))
p + geom_label_repel(aes(fill=factor(cyl)), colour="white", segment.colour="black")
# Draw all line segments
p + geom_text_repel(min.segment.length = 0)
# Omit short line segments (default behavior)
p + geom_text_repel(min.segment.length = 0.5)
# Omit all line segments
p + geom_text_repel(segment.colour = NA)
# Repel just the labels and totally ignore the data points
p + geom_text_repel(point.padding = NA)
# Hide some of the labels, but repel from all data points
mtcars$label <- rownames(mtcars)
mtcars$label[1:15] <- ""
p + geom_text_repel(data = mtcars, aes(wt, mpg, label = label))
# Nudge the starting positions
p + geom_text_repel(nudge_x = ifelse(mtcars$cyl == 6, 1, 0),
nudge_y = ifelse(mtcars$cyl == 6, 8, 0))
# Change the text size
p + geom_text_repel(aes(size = wt))
# Scale height of text, rather than sqrt(height)
p + geom_text_repel(aes(size = wt)) + scale_radius(range = c(3,6))
# You can display expressions by setting parse = TRUE. The
# details of the display are described in ?plotmath, but note that
# geom_text_repel uses strings, not expressions.
p + geom_text_repel(aes(label = paste(wt, "^(", cyl, ")", sep = "")),
parse = TRUE)
# Add a text annotation
p +
geom_text_repel() +
annotate(
"text", label = "plot mpg vs. wt",
x = 2, y = 15, size = 8, colour = "red"
)
# Add arrows
p +
geom_point(colour = "red") +
geom_text_repel(
arrow = arrow(length = unit(0.02, "npc")),
box.padding = 1
)
## End(Not run)
|
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