Calculate index based upon the selected areas based on the prediction grid

get_area_results(
  area_name,
  area_bounds,
  full_pred,
  full_grid,
  calculate_cog = FALSE,
  bias_correct = TRUE
)

Arguments

area_name: A character vector specifying which areas to calculate indices for. These should be names from boundaries_data. The default is "Coastwide", which calculates only the Coastwide index
area_bounds: Prediction grid as modified by filter_boundaries() and boundaries.
full_pred: Object of model predictions created by stats::predict().
full_grid: Filtered grid created by filter_grid().
calculate_cog: Logical. If TRUE, center of gravity estimates will also be calculated using sdmTMB::get_cog() for each area. Defaults to FALSE. Note that COG results are returned in long format with separate rows for the X (easting) and Y (northing) coordinate axes.
bias_correct: Logical. If TRUE sdmTMB::get_index() and sdmTMB::get_cog() will use bias correction to account for the non-linear transformation of random effects when calculating the index. Will be faster if set to FALSE, but is TRUE by default

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Kelli F. Johnson, Chantel Wetzel, and Eric Ward