combine_tows: Combine data with multiple records for unique tows
In nwfsc-assess/nwfscSurvey: Northwest Fisheries Science Center Survey

combine_tows

R Documentation

Combine data with multiple records for unique tows

Description

Combine catch data by trawl_id for data pulled using the pull_catch function. Generally, only a single tow is returned by species and in those instances this function is not needed. For example, if data are pulled with all sample_types included, then there will often be data from the same trawl_id included as multiple records. In these instances, this function allows for the sample data to be combined for each unique trawl_id. This also occurs if cryptic species pairs are all returned (e.g., rougheye rockfish and blackspotted rockfish)

Usage

combine_tows(data, dir = NULL, single_species = TRUE, verbose = TRUE)

Arguments

`data`	A data frame of catches obtained by using the `pull_catch` function.
`dir`	Directory where output will be saved. The directory where the file should be saved. If dir = NULL no output will be saved.
`single_species`	TRUE/FALSE Logical that indicates whether data should be grouped by `trawl_id` alone (TRUE, e.g., rougheye rockfish and blackspotted rockfish) or data should be grouped by `⁠common name⁠` and `trawl_id` (FALSE).
`verbose`	A logical that specifies if you want to print messages and warnings to the console. The default is `TRUE`.