createStrata.fn: This function will classify and subset the data frame based...

In nwfsc-assess/nwfscDiscardBootstrap: Northwest Fisheries Science Center Survey

This function will classify and subset the data frame based on a single variable and a set of values or cut points. It produces an additional column with the strata levels. If the variable is numeric, it creates a strata name that indicates the range of values in that strata Note that numeric cuts are always closed on the left and open on the right For non-numeric variables, the specific quantities are subset.

Description

This function will classify and subset the data frame based on a single variable and a set of values or cut points. It produces an additional column with the strata levels. If the variable is numeric, it creates a strata name that indicates the range of values in that strata Note that numeric cuts are always closed on the left and open on the right For non-numeric variables, the specific quantities are subset.

Usage

createStrata.fn(
  dat,
  colnm,
  vars,
  strataNames = NULL,
  nmcol = paste0(colnm, "new"),
  subset = F
)

Arguments

dat	the dataframe of observations
colnm	unsure how this is different from colnms
vars	the variables to subset by. If numeric & the variable is numeric (dat[,colnm]): this must contain the lowest boundary and the upper boundary, and all divisions in between. Anything less than the lowest boundary or greater than or equal to the largest boundary are given NA. Note that anything EQUAL TO the largest boundary is given an NA if the variable to be stratified (dat[,colnm]) is a character or factor and the vars is numeric, character, or factor: it simply subsets based on the specific values using the classifyV3.fxn if the variable to be stratified (dat[,colnm]) is numeric and the vars is not numeric: A warnin gis issued that this is probably not the desired behavior (but could be, for example year, although I use yr.fxn)
nmcol	name of additional column to add that indicates the values specified. An NA will be put for values that are not in z.
subset	whether or not to return a dataframe with only rows that meet criteria. Default value FALSE.

nwfsc-assess/nwfscDiscardBootstrap documentation built on July 3, 2023, 11:03 p.m.