dist_based_vocc: Velocity of climate change based on distance
In pbs-assess/gfranges: Groundfish Ranges

Velocity of climate change based on distance

dist_based_vocc(
  start_data,
  end_data,
  x = "x",
  y = "y",
  variable_names = c("var.1", "var.2"),
  round_fact = NULL,
  min_thresholds = NULL,
  max_thresholds = NULL,
  plus_minus = c(0.5, 0.5),
  match_logic = NULL,
  cell_size = 2,
  max_dist = NULL,
  min_dist = cell_size/2,
  delta_t = 10,
  raster = FALSE,
  kNN = FALSE
)

`start_data`	Named list containing starting climate data.
`end_data`	Named list containing target climate data.
`x`	Numeric vector of x coordinates.
`y`	Numeric vector of y coordinates.
`variable_names`	Vector of column/layer names within each data element.
`round_fact`	Speed up searches by rounding (1 = integers; 10 = 10ths; 100 = 100ths). If NULL, will use 10x precision of the plus_minus threshold when 'match_logic' = NULL.
`min_thresholds`	Optional vector of negative thresholds. Include if sensitivity to climate is not symmetrical and 'match_logic' = NULL.
`max_thresholds`	Optional vector of positive thresholds. Include if sensitivity to climate is not symmetrical and 'match_logic' = NULL.
`plus_minus`	Vector of plus/minus threshold(s) to define a symmetical (default = 1 unit) climate match.
`match_logic`	An optional vector of logical functions applied using 'rounding' of allnclimate values. If max_thresholds are not provided, the default of 'NULL' applies symmetrical plus/minus thresholds.
`cell_size`	Cell size in raster or distance to nearest data point.
`max_dist`	Distance reported when no analogue found. Default will estimate this assuming that both major axes are likely to hold an analogue.
`min_dist`	Defaults to half cell size.
`delta_t`	Time difference between starting and target time periods.
`raster`	Logical for whether climate data is in raster form.
`kNN`	Logical for whether to use kNN search for extra speed (but uses rounding, symmetrical thresholds, and only returns 1 target cell per source).