georeference_protocol_flag: Flag questionable georeference protocol records

In thiloshon/Biodiversity:

Description

Runs quality check of checking authenticity of georeference protocols and flags accordingly.

Usage

georeference_protocol_flag(gbif_data)

Arguments

gbif_data

Dataframe from GBIF with one mandatory field; georeferenceProtocol

Details

The function runs a quality check on georeference protocol of GBIF data. Checks if the georeferenceProtocol is valid. Generally, coordinates determined from GPS have an uncertainty of a few metres, especially if the Horizontal Dilution of Precision (HDOP) is also recorded. Coordinates determined from modern satellite maps, for example Google Maps/Earth are also quite precise (although beware of satellite image rectification issues). On the other hand coordinates determined from say 1:1 million maps, or from gazetteers accurate to one minute, are much less precise.

Value

Same dataframe with one additional column; georeferenceProtocolFlag

Author(s)

thiloshon <[e-mail]>

Examples

dat <- rgbif::occ_data(scientificName = 'Ursus americanus')
flagged_dat <- georeference_protocol_flag(dat$data)

thiloshon/Biodiversity documentation built on May 20, 2019, 4:07 p.m.