Line plots in ggformula. gf_path() differs from gf_line() in that points
are connected in the order in which they appear in data.
gf_curve(object = NULL, gformula = NULL, data = NULL, alpha, color, group,
linetype, size, curvature = 0.5, angle = 90, ncp = 5, arrow = NULL,
lineend = "butt", xlab, ylab, title, subtitle, caption, geom = "curve",
stat = "identity", position = "identity", show.legend = NA,
show.help = NULL, inherit = TRUE, environment = parent.frame(), ...)When chaining, this holds an object produced in the earlier portions of the chain. Most users can safely ignore this argument. See details and examples.
A formula with shape y + yend ~ x + xend.
A data frame with the variables to be plotted.
Opacity (0 = invisible, 1 = opaque).
A color or a formula used for mapping color.
Used for grouping.
A linetype (numeric or "dashed", "dotted", etc.) or a formula used for mapping linetype.
A numeric size or a formula used for mapping size.
A numeric value giving the amount of curvature. Negative values produce left-hand curves, positive values produce right-hand curves, and zero produces a straight line.
A numeric value between 0 and 180, giving an amount to skew the control points of the curve. Values less than 90 skew the curve towards the start point and values greater than 90 skew the curve towards the end point.
The number of control points used to draw the curve. More control points creates a smoother curve.
Arrow specification, as created by arrow
Line end style (round, butt, square)
Label for x-axis. See also gf_labs().
Label for y-axis. See also gf_labs().
Title, sub-title, and caption for the plot.
See also gf_labs().
Title, sub-title, and caption for the plot.
See also gf_labs().
Title, sub-title, and caption for the plot.
See also gf_labs().
A character string naming the geom used to make the layer.
A character string naming the stat used to make the layer.
Either a character string naming the position function used for the layer or a position object returned from a call to a position function.
A logical indicating whether this layer should be included in
the legends. NA, the default, includes layer in the legends if any
of the attributes of the layer are mapped.
If TRUE, display some minimal help.
A logical indicating whether default attributes are inherited.
An environment in which to look for variables not found in data.
Additional arguments. Typically these are
(a) ggplot2 aesthetics to be set with attribute = value,
(b) ggplot2 aesthetics to be mapped with attribute = ~expression, or
(c) attributes of the layer as a whole, which are set with attribute = value.
a gg object
Positional aesthetics are specified using the formula in gformula.
Setting and mapping of additional attributes can be done through the
use of additional arguments.
Attributes can be set can be set using arguments of the form attribute = value or
mapped using arguments of the form attribute = ~ expression.
In formulas of the form A | B, B will be used to form facets using
facet_wrap() or facet_grid().
This provides an alternative to
gf_facet_wrap() and
gf_facet_grid() that is terser and may feel more familiar to users
of lattice.
Evaluation of the ggplot2 code occurs in the environment of gformula.
This will typically do the right thing when formulas are created on the fly, but might not
be the right thing if formulas created in one environment are used to create plots
in another.
# NOT RUN {
D <- data.frame(x1 = 2.62, x2 = 3.57, y1 = 21.0, y2 = 15.0)
gf_point(mpg ~ wt, data = mtcars) %>%
gf_curve(y1 + y2 ~ x1 + x2, data = D, color = "navy") %>%
gf_segment(y1 + y2 ~ x1 + x2, data = D, color = "red")
# }
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