add_grid_layer {deckgl}

Add a grid layer to the deckgl widget

Description

The GridLayer renders a grid heatmap based on an array of points. It takes the constant size all each cell, projects points into cells. The color and height of the cell is scaled by number of points it contains.

Usage

add_grid_layer(
  deckgl,
  data = NULL,
  properties = list(),
  ...,
  id = "grid-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/grid-layer

Examples

data("sf_bike_parking")

properties <- list(
  filter = "spaces > 4",
  visible = TRUE,
  extruded = TRUE,
  cellSize = 200,
  elevationScale = 4,
  getPosition = "@=[lng, lat]", #~lng + lat,
  colorRange = RColorBrewer::brewer.pal(6, "YlOrRd"),
  tooltip = "{{position.0}}, {{position.1}}<br/>Count: {{count}}"
)

deck <- deckgl(zoom = 11, pitch = 45, bearing = 35, element_id = "grid-layer") %>%
  add_source("sf-bike-parking", sf_bike_parking) %>%
  add_grid_layer(
    source = "sf-bike-parking",
    properties = properties
  ) %>%
  add_control("Grid Layer") %>%
  add_basemap() %>%
  add_json_editor(wrap = 50, maxLines = 23)

if (interactive()) deck