auk_bcr | R Documentation |
Define a filter for the eBird Basic Dataset (EBD) to extract data for a set
of Bird Conservation Regions (BCRs).
BCRs are ecologically distinct regions in North America with similar bird
communities, habitats, and resource management issues. This function only
defines the filter and, once all filters have been defined, auk_filter()
should be used to call AWK and perform the filtering.
auk_bcr(x, bcr, replace = FALSE)
x |
|
bcr |
integer; BCRs to filter by. BCRs are identified by an integer, from 1 to 66, that can be looked up in the bcr_codes table. |
replace |
logical; multiple calls to |
This function can also work with on an auk_sampling
object if the
user only wishes to filter the sampling event data.
An auk_ebd
object.
Other filter:
auk_bbox()
,
auk_breeding()
,
auk_complete()
,
auk_country()
,
auk_county()
,
auk_date()
,
auk_distance()
,
auk_duration()
,
auk_exotic()
,
auk_extent()
,
auk_filter()
,
auk_last_edited()
,
auk_observer()
,
auk_project()
,
auk_protocol()
,
auk_species()
,
auk_state()
,
auk_time()
,
auk_year()
# bcr codes can be looked up in bcr_codes
dplyr::filter(bcr_codes, bcr_name == "Central Hardwoods")
system.file("extdata/ebd-sample.txt", package = "auk") %>%
auk_ebd() %>%
auk_bcr(bcr = 24)
# filter to bcr 24
ebd <- auk_ebd(system.file("extdata/ebd-sample.txt", package = "auk"))
auk_bcr(ebd, bcr = 24)
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