auk_duration | R Documentation |
Define a filter for the eBird Basic Dataset (EBD) based on the duration of
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. Note that checklists with no effort, such as incidental
observations, will be excluded if this filter is used since they have no
associated duration information.
auk_duration(x, duration)
x |
|
duration |
integer; 2 element vector specifying the range of durations in minutes to filter by. |
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_bcr()
,
auk_breeding()
,
auk_complete()
,
auk_country()
,
auk_county()
,
auk_date()
,
auk_distance()
,
auk_exotic()
,
auk_extent()
,
auk_filter()
,
auk_last_edited()
,
auk_observer()
,
auk_project()
,
auk_protocol()
,
auk_species()
,
auk_state()
,
auk_time()
,
auk_year()
# only keep checklists that are less than an hour long
system.file("extdata/ebd-sample.txt", package = "auk") %>%
auk_ebd() %>%
auk_duration(duration = c(0, 60))
# alternatively, without pipes
ebd <- auk_ebd(system.file("extdata/ebd-sample.txt", package = "auk"))
auk_duration(ebd, duration = c(0, 60))
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.