getAllNlTypes

<p>Lists supported nightlight types. The names are in the form
    "nlType.avgPeriod" where avgPeriod is the period over which the
    raw data is averaged i.e. Daily (D), Monthly (M) and Yearly (Y).
    Currently the main nlTypes are "OLS" and "VIIRS". OLS only has yearly
    averaged data while VIIRS has daily, monthly and yearly
    e.g. VIIRS daily = "VIIRS.D", OLS yearly = "OLS.Y"</p>

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.

getAllNlTypes: Lists supported nightlight types

Description

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Examples