Filter to just data collected following a specific search protocol: stationary, traveling, or casual. 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_protocol(x, protocol)

Arguments

x

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

protocol

character. Many protocols exist in the database, however, the most commonly used are:

  • Stationary

  • Traveling

  • Area

  • Incidental

A complete list of valid protocols is contained within the vector valid_protocols within this package. Multiple protocols are allowed at the same time.

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.

Examples

system.file("extdata/ebd-sample.txt", package = "auk") %>%
  auk_ebd() %>%
  auk_protocol("Stationary")
#> Input 
#>   EBD: /usr/local/lib/R/site-library/auk/extdata/ebd-sample.txt 
#> 
#> Output 
#>   Filters not executed
#> 
#> Filters 
#>   Species: all
#>   Countries: all
#>   States: all
#>   Counties: all
#>   BCRs: all
#>   Bounding box: full extent
#>   Years: all
#>   Date: all
#>   Start time: all
#>   Last edited date: all
#>   Protocol: Stationary
#>   Project code: all
#>   Duration: all
#>   Distance travelled: all
#>   Records with breeding codes only: no
#>   Complete checklists only: no
  
# alternatively, without pipes
ebd <- auk_ebd(system.file("extdata/ebd-sample.txt", package = "auk"))
auk_protocol(ebd, "Stationary")
#> Input 
#>   EBD: /usr/local/lib/R/site-library/auk/extdata/ebd-sample.txt 
#> 
#> Output 
#>   Filters not executed
#> 
#> Filters 
#>   Species: all
#>   Countries: all
#>   States: all
#>   Counties: all
#>   BCRs: all
#>   Bounding box: full extent
#>   Years: all
#>   Date: all
#>   Start time: all
#>   Last edited date: all
#>   Protocol: Stationary
#>   Project code: all
#>   Duration: all
#>   Distance travelled: all
#>   Records with breeding codes only: no
#>   Complete checklists only: no