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Calculate spatial accessibility scores

Source: R/01-spread_functions.R
spread_access.Rd

Specialized version of [spread_weighted()] for accessibility analysis. Distributes supply-to-demand ratios across space using probability-based catchment areas to calculate accessibility scores.

Usage

spread_access(
  ratios,
  weights,
  ratio_cols = NULL,
  full_output = FALSE,
  plot_prefix = NULL
)

Arguments

ratios

Numeric vector, matrix, or data.frame of supply-to-demand ratios: - Vector: Must match number of weight layers - Matrix: Rows match weight layers, columns are different measures - Data.frame: Same as matrix but requires ratio_cols parameter

weights

Multi-layer SpatRaster where each layer represents one site's probability-based catchment area

ratio_cols

Character vector of column names if ratios is a data.frame

full_output

Logical; whether to return intermediate calculations (default FALSE)

plot_prefix

Character string to prepend to output names (default NULL)

Value

If full_output = TRUE, returns list containing: - access_scores: SpatRaster stack of accessibility scores per measure - site_specific: List of site-specific accessibility SpatRasters If full_output = FALSE, returns only access_scores SpatRaster