a5view

Interactive map viewer for A5 geospatial cells, powered by deck.gl. Renders cells directly in the browser using deck.gl’s native A5Layer — no pre-computation of boundaries needed. Intentionally minimal API for fast prototyping and exploration of A5 data.

Installation

# install.packages("pak")
pak::pak("belian-earth/a5view")

Usage

library(a5R)
library(a5view)

# Pick a cell and expand to a disk
cell <- a5_lonlat_to_cell(-3.19, 55.95, resolution = 9)
disk <- a5_grid_disk(cell, k = 10) |>
  a5_uncompact(resolution = 9)

# Colour by distance from centre
a5_view(disk, fill = a5_cell_distance(cell, disk), palette = "Inferno")

Features:

• Colour mapping from numeric vectors or data frame columns with any hcl.colors() palette
• Interactive basemap selector (dark, light, OSM, satellite)
• Opacity slider
• Tooltip with cell ID on click, fill value on hover
• Cell border styling
• 3D extrusion via elevation
• Shiny bindings (a5_viewOutput / renderA5_view)