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spOutlier
This automated tool uses techniques modified from Chapman 1999, to detect outliers in latitude, longitude and altitude. Another feature was included to identify possible errors. If the user indicates that the points are "marine" the system will highlight all points that occur inland. Cut and paste your data into the box in the format cited using either a comma (,) or space ( ) to separate individual fields. (More information...)
 
Require input (id, longitude, latitude) - Optional (altitude)
import data from Excel file
test
see map
show label for outliers on map

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Centro de Referência em Informação Ambiental, CRIA
Fundação de Amparo à Pesquisa do Estado de São Paulo