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Check if VIIRS nightlight data for the country exists in the country nightlight data file. First checks if the country nightlight data file exists.
existsCtryNlData(ctryCode, nlPeriod, stat, nlType)
character the ISO3 code of the country
character the nlPeriod
character the stat to check for
character the nlType
TRUE/FALSE
# NOT RUN { existsCtryNlData("KEN", "201204", "sum", "VIIRS") # } # NOT RUN { # }
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