validNlYearNum

yearNum

<p>type of nightlight either "VIIRS" or "OLS"</p>

nlType

<p>Check if a year is valid for a given nightlight type</p>

The Rnightlights package extracts raster and zonal statistics
from satellite nightlight rasters downloaded from the United States
National Oceanic and Atmospheric Administration (<http://www.noaa.gov>)
free data repositories. Both the DMSP-OLS annual and SNPP-VIIRS monthly
nightlight raster data are supported. Satellite nightlight raster tiles are
downloaded and cropped to the country boundaries using shapefiles from the GADM
database of Global Administrative Areas (<http://gadm.org>). Zonal statistics
are then calculated at the lowest administrative boundary for the selected
country and cached locally for future retrieval. Finally, a simple data
explorer/browser is included that allows one to visualize the cached data e.g.
graphing, mapping and clustering regional data.

Christopher Njuguna

Rnightlights

Satellite Nightlight Data Extraction

Henrik Bengtsson

Black Guru

Jeff Chen

Star Ying

Chris Elvidge

validNlYearNum function

Check if a year is valid for a given nightlight type — validNlYearNum

Check if a year is valid for a given nightlight type

validNlYearNum: Check if a year is valid for a given nightlight type

Description

Usage

Arguments

Value

Examples