compute_SSD: compute spectral species distribution from original spectral...

In jbferet/biodivMapR: biodivMapR: an R package for a- and ß-diversity mapping using remotely-sensed images

compute spectral species distribution from original spectral species map

Description

compute spectral species distribution from original spectral species map

Usage

compute_SSD(
  Image_Chunk,
  window_size,
  nbclusters,
  MinSun = 0.25,
  pcelim = 0.02,
  Index_Alpha = "Shannon",
  nbCPU = 1,
  nbPieces = 1,
  Mask_Chunk = FALSE,
  progressbar = FALSE
)

Arguments

Image_Chunk	numeric. 3D image chunk of spectral species
window_size	numeric. size of spatial units (in pixels) to compute diversity
nbclusters	number of clusters defined in k-Means
MinSun	minimum proportion of sunlit pixels required to consider plot
pcelim	minimum proportion for a spectral species to be included
Index_Alpha	list. list of alpha diversity indices to be computed from spectral species
nbCPU	numeric. Number of CPUs to use in parallel.
nbPieces	numeric. number of pieces in which original image is split
Mask_Chunk	numeric. 3D image chunk of mask (optional)
progressbar	boolean. should progress bar be displayed (set to TRUE only if no conflict of parallel process)

Value

list of alpha diversity metrics for each iteration

jbferet/biodivMapR documentation built on April 25, 2024, 10:44 p.m.