Convert Random Walk Results to Raster

Aggregates output from runoutSim() into a raster showing how often each cell was traversed during runout simulations. Optionally weights each walk by a supplied vector (e.g., probability of initiation).

Usage

walksToRaster(x, dem, method = "freq", weights = NULL)

Arguments

x

A list of runout simulation outputs (e.g., from runoutSim()).

dem

A SpatRaster object representing the reference DEM.

method

Method of combining overlaying runout paths: "freq" and "cdf_prob" calculate the traverse frequency and cumulative distribution function probabilities for simulations from a single source cell. "max_cdf_prob" and "avg_cdf_prob" calculate the maximum/average empirical probabilites from CDF's applied to walks from invididual source cells.

weights

Optional numeric vector of weights (same length as x) to scale traverse frequencies.

Value

A SpatRaster with cell values representing weighted or unweighted traverse frequencies.

Examples

if (FALSE) { # \dontrun{
# Convert simulated paths to a raster of transition frequencies
paths_raster <- walksToRaster(sim_paths, dem)
plot(paths_raster)
} # }