Last data update: 2014.03.03

 R: Average of a field among points within polygons
lawn_averageR Documentation

Average of a field among points within polygons

Description

Calculate the average value of a field for a set of data-Point's within a set of data-Polygon's

Usage

lawn_average(polygons, points, field, outputField = "average", lint = FALSE)

Arguments

polygons

Geojson data-Polygon's

points

Geojson data-Point's

field

(character) The field in the points features from which to pull values to average

outputField

(character) The field in polygons to put results of the averages

lint

(logical) Lint or not. Uses geojsonhint. Takes up increasing time as the object to get linted increases in size, so probably use by default for small objects, but not for large if you know they are good geojson objects. Default: FALSE

Value

polygons with the value of outField set to the calculated averages

See Also

Other aggregations: lawn_aggregate, lawn_count, lawn_deviation, lawn_max, lawn_median, lawn_min, lawn_sum, lawn_variance

Examples

# using data in the package
cat(lawn_data$points_average)
cat(lawn_data$polygons_average)
lawn_average(polygons = lawn_data$polygons_average,
             points = lawn_data$points_average, 'population')

Results


Created & Maintained by Osamu Ogasawara (osamu.ogasawara@gmail.com) and IMSBIO