Description Usage Arguments Value Examples
Define a filter for the eBird Basic Dataset (EBD) based on spatial extent.
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.
1 | auk_extent(x, extent)
|
x |
|
extent |
numeric; spatial extent expressed as the range of latitudes
and longitudes: |
An auk_ebd
object.
1 2 3 4 | # fliter to locations roughly in the Pacific Northwest
system.file("extdata/ebd-sample.txt", package = "auk") %>%
auk_ebd() %>%
auk_extent(extent = c(-125, 37, -120, 52))
|
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