getAllNlCtryCodes

The ctryCodes to exclude from processing based on observed
behaviour. The option can take the following values:<ul>
<li><code>missing</code> ctryCodes that are in <code>rworldmap</code> but not on <code>GADM</code></li>
<li><code>long</code> ctryCodes that take very long to process using 'rast'
 options. May improve using more processors or using 'gdal' 
 options.</li>
<li><code>error</code> ctryCodes whose polygons have caused processing to crash
 in tests. Not extensively tested and may work fine on other 
 systems.</li>
<li><code>all</code> Omit a combination of all the above options</li>
<li><code>none</code> Do not omit any ctryCodes</li>
</ul>

omit

Get a list of all known valid ISO3 country codes.

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.

getAllNlCtryCodes: Get all known valid ISO3 country codes

Description

Usage

Arguments

Value