Sample Existing Data Based on Strata — sample_existing

This function takes a data frame of existing data, a data frame of desired sample sizes for each strata, the number of samples to take, and optionally a file name and overwrite parameter. It returns a sample of the existing data based on the desired sample sizes for each strata, and optionally writes the resulting samples to a file.

Usage

sample_existing_strat(
  existing,
  toSample,
  nSamp,
  filename = NULL,
  overwrite = FALSE
)

Arguments

existing: sf 'POINT'. Existing plot network.
toSample: A data frame specifying the desired sample sizes for each strata.
nSamp: Numeric. Number of desired samples. existing, include and force influence this value.
filename: Character. Path to write output samples.
overwrite: Logical. Choice to overwrite existing filename if it exists.

Value

An sf object that is a sub-sample of existing