Package index • lightson

Download

Fetch nighttime lights rasters from remote sources

ntl_download(): Download VIIRS Black Marble annual nighttime lights
bhuvan_raster(): Download Bhuvan NTL raster tiles for a region
bhuvan_stats(): Get pre-aggregated Bhuvan NTL state statistics

Analysis

Compute zonal statistics over spatial polygons

extract_panel(): Compute zonal statistics for a panel of rasters

Visualisation

Plot trends and maps

plot_ntl_trend(): Plot nighttime lights radiance trends
plot_ntl_map(): Plot a nighttime lights raster map
plot_ntl_panel(): Plot a multi-year nighttime lights panel
theme_ntl(): ggplot2 theme for nighttime lights plots

Boundaries

Indian administrative boundaries

get_india_admin(): Get Indian administrative boundaries

Auth & Cache

Authentication and local cache management

earthdata_token(): Get NASA Earthdata bearer token
cache_clear(): Clear the local lightson cache