Clamp Environmental Grids — maxent

Restricts environmental variable values to the range observed during training. Values below min are set to min, values above max are set to max. A clamping grid records the total absolute clamping at each cell.

Usage

maxent_clamp(env_grids, var_mins, var_maxs)

Arguments

env_grids: List of external pointers to Grid<float> objects.
var_mins: Numeric vector of minimum training values per variable.
var_maxs: Numeric vector of maximum training values per variable.

Value

A named list with:

clamped_grids: List of external pointers to clamped grids
clamp_grid: External pointer to clamping magnitude grid

Examples

# \donttest{
g1 <- maxent_grid_from_matrix(matrix(runif(50), 5, 10),
        -120, 35, 1, name = "temp")
g2 <- maxent_grid_from_matrix(matrix(runif(50, 50, 200), 5, 10),
        -120, 35, 1, name = "precip")
result <- maxent_clamp(list(g1, g2), c(0, 50), c(30, 200))
clamped <- result$clamped_grids
clamp_mat <- maxent_grid_to_matrix(result$clamp_grid)
# }