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Convert occurrence coordinates to 0-based stream indices

Source: R/featured_space_raster.R
maxent_raster_sample_indices.Rd

Maps occurrence cell indices (as produced by terra::cellFromXY) into 0-based indices within the concatenated stream of finite (non-NA) background cells emitted by maxent_featured_space_from_rast.

Usage

maxent_raster_sample_indices(rast, cells)

Arguments

rast

A terra::SpatRaster.

cells

Integer vector of 1-based cell indices (as returned by terra::cellFromXY).

Value

Integer vector of 0-based indices within the finite-cell stream. Occurrence cells that fall on NA raster values (and therefore never appear in the stream) are silently dropped and a warning is emitted.