geosplit: geosplit Split geographic data into a training set and a test...

In davharris/geovalidation: geovalidation: tools for evaluating model performance in a geographic context

Description

geosplit Split geographic data into a training set and a test set All the points within inner.radius of a center point will be in the test set. Everything more than outer.radius away will be in the training set. radii are in meters

Usage

geosplit(locations, centers, inner.radius, outer.radius)

Examples

locations = cbind(
   longitude = runif(100, min = 80, max = 120),
   latitude = runif(100, min = 30, max = 80)
)
locations = cbind(
  longitude = runif(2000, min = 80, max = 110),
  latitude = runif(2000, min = 30, max = 50)
)
centers = geosphere::regularCoordinates(16)
split = geosplit(locations, centers, inner.radius = 100000, outer.radius = 200000)
colors = split$in.train + 3 * split$in.test
plot(
  locations[split$in.train|split$in.test, ],
  col = colors[split$in.train|split$in.test],
  pch = 16,
  cex = .8
)

davharris/geovalidation documentation built on May 14, 2019, 9:28 p.m.