gbif: Data from GBIF

In dismo: Species Distribution Modeling

Description

This function downloads species occurence records from the Global Biodiversity Information Facility (GBIF) data portal. You can download either a single species (if you append a '*' to the species name) or a subspecies of comparable level. You can download the data for an entire genus by using species='*'. Before using this function, please first check the GBIF data use agreement.

Usage

gbif(genus, species="", ext=NULL, args=NULL, geo=TRUE, sp=FALSE, 
   removeZeros=FALSE, download=TRUE, ntries=5, nrecs=300, start=1, end=Inf)

Arguments

genus	character. genus name
species	character. species name. Use '*' to download the entire genus. Append '*' to the species name to get all naming variants (e.g. with and witout species author name) and sub-taxa
ext	Extent object to limit the geographic extent of the records. An extent can be created using functions like drawExtent and extent
args	character. Additional arguments to refine the query. See query parameters in http://www.gbif.org/developer/occurrence for more details
geo	logical. If TRUE, only records that have a georeference (longitude and latitude values) will be downloaded
sp	logical. If TRUE, geo will be set to TRUE and a SpatialPointsDataFrame will be returned
removeZeros	logical. If TRUE, all records that have a latitude OR longitude of zero will be removed if geo==TRUE, or set to NA if geo==FALSE. If FALSE, only records that have a latitude AND longitude that are zero will be removed or set to NA
download	logical. If TRUE, records will be downloaded, else only the number of records will be shown
ntries	integer. How many times should the function attempt to download the data, if an invalid response is returned (perhaps because the GBIF server is very busy)
nrecs	integer. How many records to download in a single request (max is 300)?
start	integer. Record number from which to start requesting data
end	integer. Last record to request

Value

data frame

Author(s)

Robert J. Hijmans

References

http://www.gbif.org/occurrence

Examples

## Not run: 

gbif('solanum', download=FALSE)
gbif('solanum', 'acaule', download=FALSE)

gbif('Batrachoseps', '' , down=FALSE)
gbif('Batrachoseps', 'luciae', down=FALSE)
g <- gbif('Batrachoseps', 'luciae', geo=TRUE)
plot(g$lon, g$lat)

gs <- gbif('Batrachoseps', 'luciae', sp=TRUE)
plot(gs)

## End(Not run)

dismo documentation built on May 2, 2019, 6:07 p.m.