add_great_circle_layer: Add a great circle layer to the deckgl widget

In deckgl: An R Interface to 'deck.gl'

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

Arguments

deckgl	A deckgl widget object.
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. The properties parameter can also be an empty list. In this case all props must be passed as named arguments.
...	Named arguments that will be added to the properties object. Identical parameters are overwritten.
id	The unique id of the 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

deckgl documentation built on March 7, 2023, 5:37 p.m.