geom_text(), this geom also generates text but places the
text at an angle so that the text seems aimed towards a point defined by
geom_text_aimed( mapping = NULL, data = NULL, stat = "identity", position = "identity", ..., parse = FALSE, nudge_x = 0, nudge_y = 0, flip_upsidedown = TRUE, check_overlap = FALSE, na.rm = FALSE, show.legend = NA, inherit.aes = TRUE )
Set of aesthetic mappings created by
aes(). If specified and
inherit.aes = TRUE(the default), it is combined with the default mapping at the top level of the plot. You must supply
mappingif there is no plot mapping.
The data to be displayed in this layer. There are three options:
NULL, the default, the data is inherited from the plot data as specified in the call to
data.frame, or other object, will override the plot data. All objects will be fortified to produce a data frame. See
fortify()for which variables will be created.
functionwill be called with a single argument, the plot data. The return value must be a
data.frame, and will be used as the layer data. A
functioncan be created from a
~ head(.x, 10)).
The statistical transformation to use on the data for this layer, either as a
Geomsubclass or as a string naming the stat stripped of the
Position adjustment, either as a string, or the result of a call to a position adjustment function. Cannot be jointy specified with
Other arguments passed on to
layer(). These are often aesthetics, used to set an aesthetic to a fixed value, like
colour = "red"or
size = 3. They may also be parameters to the paired geom/stat.
TRUE, the labels will be parsed into expressions and displayed as described in
- nudge_x, nudge_y
Horizontal and vertical adjustment to nudge labels by. Useful for offsetting text from points, particularly on discrete scales. Cannot be jointly specified with
TRUE(default), the angle of text placed at angles between 90 and 270 degrees is flipped so that it is more comfortable to read. If
FALSE, will take calculated angles literally.
TRUE, text that overlaps previous text in the same layer will not be plotted.
check_overlaphappens at draw time and in the order of the data. Therefore data should be arranged by the label column before calling
geom_text(). Note that this argument is not supported by
FALSE, the default, missing values are removed with a warning. If
TRUE, missing values are silently removed.
logical. Should this layer be included in the legends?
NA, the default, includes if any aesthetics are mapped.
FALSEnever includes, and
TRUEalways includes. It can also be a named logical vector to finely select the aesthetics to display.
FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g.
The calculated angle is such that the text will be parallel to a
line passing through the coordinates
[x, y] and
The calculated angle is added to the
angle angle aesthetic, so that
you can set text perpendicular to that line by setting
angle = 90.
These angles are calculated in absolute coordinates, meaning that resizing
the plot will retain the same appearance.
When using this geom to aim text at the centre of a polar plot, make sure the radius range does not have close to zero width.
geom_text_aimed() understands the following aesthetics (required aesthetics are in bold):
Learn more about setting these aesthetics in
# Point all labels to upper right corner ggplot(mtcars, aes(mpg, wt)) + geom_text_aimed(aes(label = rownames(mtcars)), xend = Inf, yend = Inf) # Point all labels to center of polar plot ggplot(mpg, aes(manufacturer)) + geom_bar(width = 1, aes(fill = manufacturer), show.legend = FALSE) + geom_text_aimed(aes(label = manufacturer), hjust = 0, stat = "count", nudge_y = 2) + scale_x_discrete(labels = NULL) + coord_polar()