add_great_circle_layer {deckgl}R Documentation

Add a great circle layer to the deckgl widget

Description

The GreatCircleLayer is a variation of the ArcLayer. It renders flat arcs along the great circle joining pairs of source and target points, specified as latitude/longitude coordinates.

Usage

add_great_circle_layer(deckgl, id = "great-circle-layer", data = NULL,
  properties = list(), ...)

Arguments

deckgl

A deckgl widget object.

id

The unique id of the layer.

data

The url to fetch data from or a data object.

properties

A named list of properties with names corresponding to the properties defined in the deckgl-api-reference for the given layer class.

...

More properties that will be added to the properties object. This can be useful if you want to use a properties object for more than one layer.

See Also

https://deck.gl/#/documentation/deckgl-api-reference/layers/great-circle-layer

Examples

## @knitr great-circle-layer
data("bart_segments")

properties <- list(
  pickable = TRUE,
  getWidth = 12,
  getSourcePosition = ~from_lng + from_lat,
  getTargetPosition = ~to_lng + to_lat,
  getSourceColor = JS("d => [Math.sqrt(d.inbound), 140, 0]"),
  getTargetColor = JS("d => [Math.sqrt(d.outbound), 140, 0]"),
  getTooltip = "{{from_name}} to {{to_name}}"
)

deck <- deckgl(zoom = 10, pitch = 35) %>%
  add_great_circle_layer(data = bart_segments, properties = properties) %>%
  add_control("Great Circle Layer") %>%
  add_basemap()

if (interactive()) deck

[Package deckgl version 0.2.7 Index]