Calculate the number of observations by year and strata

Usage

CheckStrata.fn(
  dir = NULL,
  dat,
  strat.vars = c("Depth_m", "Latitude_dd"),
  strat.df,
  printfolder = "forSS3",
  verbose = TRUE
)

Arguments

dir: Directory where output will be saved. The directory where the file should be saved. If dir = NULL no output will be saved.
dat: Data-frame of the catch data that has been created by pull_catch().
strat.vars: Variables in both data frame that are used to define the stratas. Default is bottom depth (m) and latitudes (decimal degrees), i.e., c("Depth_m", "Latitude_dd").
strat.df: A data frame that defines the strata and provides the calculated areas for each strata returned from createStrataDF.fn().
printfolder: A string that will be appended to dir, creating a folder where the output will be saved. If specified as "", the output will just be saved directly in dir. The default is "forSS3".
verbose: A logical that specifies if you want to print messages and warnings to the console. The default is TRUE.

Value

A matrix with the number of tows within each strata by year and the number of positive tows by strata and year.

Details

Calculates and returns the total number of tows and positive tows conducted in each strata by year. The selected stratas are used to expand the length and marginal age compositions and to calculate a design based index using the Biomass.fn().

Author

Chantel Wetzel