generatePixelGroups: Add the correct 'pixelGroups' to a 'pixelDataTable' object

In PredictiveEcology/LandR: Landscape Ecosystem Modelling in R

Add the correct pixelGroups to a pixelDataTable object

Description

Generates unique groupings of a data.table object where one or more rows can all belong to the same pixelIndex. Pixel groups will be identical pixels based on unique combinations of columns.

Usage

generatePixelGroups(
  pixelDataTable,
  maxPixelGroup,
  columns = c("ecoregionGroup", "speciesCode", "age", "B")
)

Arguments

pixelDataTable	A data.table with column-based descriptions. Must have a column called pixelIndex, which allows for multiple rows to be associated with a single pixel.
maxPixelGroup	A length 1 numeric indicating the current maximum pixelGroup value; the pixelGroup numbers returned will start at maxPixelGroup + 1.
columns	A character vector of column names to use as part of the generation of unique combinations of features. Default is c("ecoregionGroup", "speciesCode", "age", "B")

Value

Returns a vector of pixelGroup in the original order of the input pixelDataTable. This should likely be added to the pixelDataTable object immediately.

PredictiveEcology/LandR documentation built on June 7, 2024, 4:16 p.m.