ly_contour {rbokeh} | R Documentation

## Add a "contour" layer to a Bokeh figure

### Description

Computes and draws contour lines.

### Usage

    ly_contour(fig, z, x = seq(0, 1, length.out = nrow(z)), y = seq(0, 1,
      length.out = ncol(z)), nlevels = 10, levels = pretty(range(z, na.rm =
      TRUE), nlevels), color = "black", alpha = 1, width = 1, type = 1,
      hov_color = NULL, hov_alpha = NULL, ns_color = NULL, ns_alpha = NULL,
      sel_color = NULL, sel_alpha = NULL, lname = NULL, lgroup = NULL, ...)

### Arguments

`fig` | Figure to modify.
`z` | A matrix containing the values to compute contour lines for.
`x, y` | Locations of grid lines at which the values in `image` are measured (see `contourLines`).
`nlevels, levels` | Parameters sent to `contourLines`).
`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).
`width` | Stroke width in units of pixels.
`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.
`hov_color` | Color to use to stroke lines when they are hovered.
`hov_alpha` | Transparency value for the line when it is hovered.
`ns_color` | Color to use to stroke lines when they are not selected.
`ns_alpha` | Transparency value for the line when it is not selected.
`sel_color` | Color to use to stroke lines when they are selected.
`sel_alpha` | Transparency value for the line when it is selected.
`lname` | Layer name.
`lgroup` | Layer group.
`...` | Additional parameters for fine control over line properties. See "Additional parameters" below.

### 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_arc`, `ly_bar`, `ly_bezier`, `ly_boxplot`, `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

    figure(title = "Volcano") %>%
      ly_image(volcano) %>%
      ly_contour(volcano)

[Package rbokeh version 0.6.3 Index]