| auk_time {auk} | R Documentation |
Filter the eBird data by checklist start time
Description
Define a filter for the eBird Basic Dataset (EBD) based on a range of start
times for the checklist. 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.
Usage
auk_time(x, start_time)
Arguments
x |
|
start_time |
character; 2 element character vector giving the range of
times in 24 hour format, e.g. |
Details
This function can also work with on an auk_sampling object if the
user only wishes to filter the sampling event data.
Value
An auk_ebd object.
See Also
Other filter:
auk_bbox(),
auk_bcr(),
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_year()
Examples
# only keep checklists started between 6 and 8 in the morning
system.file("extdata/ebd-sample.txt", package = "auk") %>%
auk_ebd() %>%
auk_time(start_time = c("06:00", "08:00"))
# alternatively, without pipes
ebd <- auk_ebd(system.file("extdata/ebd-sample.txt", package = "auk"))
auk_time(ebd, start_time = c("06:00", "08:00"))