R: Summarize values by polygon

summarizeByPolygon

R Documentation

Summarize values by polygon

Description

Given vectors of longitudes, latitudes and values, this function will summarize given values by spatial polygon using the FUN and return a dataframe with polygon IDs and summary values.

Usage

summarizeByPolygon(
  longitude,
  latitude,
  value,
  SFDF,
  useBuffering = FALSE,
  FUN,
  varName = "summaryValue"
)

Arguments

`longitude`	vector of longitudes
`latitude`	vector of latitudes
`value`	vector of values at the locations of interest
`SFDF`	simple features data frame with polygons used for aggregating
`useBuffering`	passed to MazamaSpatialUtils::getSpatialData()
`FUN`	function to be applied while summarizing (e.g. mean, max, etc.)
`varName`	variable name assigned to the summary variable

Value

A dataframe with the same rows as 'SFDF' but containing only two columns: 'polygonID' and the summary value.

Note

This function has not been thoroughly tested and is included in the package for experimental use only.