ly_arc {rbokeh} | R Documentation

## Add an "arc" layer to a Bokeh figure

### Description

Add an "arc" layer to a Bokeh figure

### Usage

    ly_arc(fig, x, y = NULL, data = figure_data(fig), radius = 0.2,
      start_angle = 0, end_angle = 2 * pi, direction = "anticlock",
      color = NULL, alpha = NULL, type = 1, width = 1, legend = TRUE,
      lname = NULL, lgroup = NULL, ...)

### Arguments

`fig` | Figure to modify.
`x` | Values or field name / expression indicating location of center x coordinates.
`y` | Values or field name / expression indicating location of center y coordinates.
`data` | An optional data frame, providing the source for inputs x, y, and other glyph properties.
`radius` | values or field name / expression indicating arc radii.
`start_angle` | values or field name / expression indicating starting angles.
`end_angle` | values or field name / expression indicating ending angles.
`direction` | Direction to turn between starting and ending angles ("anticlock", "clock").
`color` | Color to use to stroke lines with - a hex code (with no alpha) or any of the 147 named CSS colors, e.g 'green', 'indigo'.
`alpha` | Transparency value for the line between 0 (transparent) and 1 (opaque).
`type` | An integer between 1 and 6 matching the `lty` property in `par` or an array of integer pixel distances that describe the on-off pattern of dashing to use.
`width` | Stroke width in units of pixels.
`legend` | Either a logical specifying not to plot a legend for this layer (FALSE) or a string indicating the name of the legend entry for this layer. Note that when mapping plot attributes to variables in `data`, a legend is automatically created and does not need to be specified. See "Mapped plot attributes and legends" below.
`lname` | Layer name.
`lgroup` | Layer group.
`...` | Additional parameters for fine control over line properties. See "Additional parameters" below.

### Mapped plot attributes and legends

When specifying an input data frame for a layer through the `data` argument, columns of `data` can be used to specify various plot attributes such as `color`, etc. For example, with `ly_points(..., data = iris, color = Species)`, the `Species` variable is used to determine how to color the points. Here, `Species` is "mapped" to the `color` attribute. Both continuous and categorical variables can be mapped. In the case of continuous variables, the range is cut into slices and attributes are applied to each interval. The mapping from the values of the variable to the actual plot attributes is determined based on the theme. When attributes are mapped, legend entries are automatically created for the mappings (when possible).

### Additional parameters

`line_join` | How path segments should be joined together. One of 'miter' 'round' 'bevel'.
`line_cap` | How path segments should be terminated. One of 'butt' 'round' 'square'.
`line_dash` | An integer between 1 and 6 matching the `lty` property in `par` or an array of integer pixel distances that describe the on-off pattern of dashing to use.
`line_dash_offset` | The distance in pixels into the line_dash that the pattern should start from.

### See Also

Other layer functions: `ly_annular_wedge`, `ly_annulus`, `ly_bar`, `ly_bezier`, `ly_boxplot`, `ly_contour`, `ly_crect`, `ly_curve`, `ly_density`, `ly_hist`, `ly_image_url`, `ly_image`, `ly_lines`, `ly_multi_line`, `ly_oval`, `ly_patch`, `ly_points`, `ly_polygons`, `ly_quadratic`, `ly_quantile`, `ly_ray`, `ly_rect`, `ly_segments`, `ly_text`, `ly_wedge`

### Examples

    rescale <- function(x)
      (x - min(x)) / diff(range(x))
    figure() %>%
      ly_arc(Sepal.Length, Sepal.Width, data = iris,
        end_angle = rescale(Petal.Length) * 2 * pi, color = Species,
        alpha = 0.5)

[Package rbokeh version 0.6.3 Index]