auk (version 0.4.0)

auk_time: 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

auk_ebd or auk_sampling object; reference to file created by auk_ebd() or auk_sampling().

start_time

character; 2 element character vector giving the range of times in 24 hour format, e.g. "06:30" or "16:22".

Value

An auk_ebd object.

Details

This function can also work with on an auk_sampling object if the user only wishes to filter the sampling event data.

See Also

Other filter: auk_bbox, auk_bcr, auk_breeding, auk_complete, auk_country, auk_date, auk_distance, auk_duration, auk_extent, auk_filter, auk_last_edited, auk_observer, auk_project, auk_protocol, auk_species, auk_state

Examples

# NOT RUN {
# 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"))
# }