weight.adjust: Adjusting Weights Calculated from AIM Sample Designs

In nstauffer/aim.analysis: Analysis and Reporting of Terrestrial AIM Data Using TerrADat and Sample Design Documentation

Adjusting Weights Calculated from AIM Sample Designs

Description

This function takes the point weights data frame output from the function weight() and a SpatialPolygonsDataFrame defining the weight categories. Returns the data frame supplied as points with the new column ADJWGT containing the adjusted weights.

Usage

weight.adjust(
  points,
  wgtcat.spdf,
  spdf.area.field = "AREA.HA.UNIT.SUM",
  spdf.wgtcat.field = "UNIQUE.IDENTIFIER",
  projection = sp::CRS("+proj=longlat +ellps=GRS80 +datum=NAD83 +no_defs")
)

Arguments

points	Data frame output from weight(), equivalent to weight()[["point.weights"]] or weight()[[2]].
wgtcat.spdf	SpatialPolygonsDataFrame describing the weight categories for adjusting the weights. Use the output from intersect().
spdf.area.field	Character string defining the field name in wgtcat@data that contains the areas for the weight categories. Defaults to "AREA.HA.UNIT.SUM".
spdf.wgtcat.field	Character string defining the field name in wgtcat@data that contains the unique identification for the weight categories. Defaults to "UNIQUE.IDENTIFIER".
projection	sp::CRS() argument. Defaults to NAD83 with sp::CRS("+proj=longlat +ellps=GRS80 +datum=NAD83 +no_defs"). Is used to reproject all SPDFs in order to perform spatial manipulations.

Examples

weight.adjuster()

nstauffer/aim.analysis documentation built on Nov. 2, 2023, 12:52 a.m.