errorGen: Generate interpolation error stats from validation datasets

In jsta/ipdw: Spatial Interpolation by Inverse Path Distance Weighting

Generate interpolation error stats from validation datasets

Description

Generate error statistics from validation point datasets overlaid on a raster surface

Usage

errorGen(
  finalraster,
  validation.sf_ob,
  validation.data,
  plot = FALSE,
  title = ""
)

Arguments

finalraster	RasterLayer object
validation.sf_ob	sf object with points geometry
validation.data	data.frame
plot	logical. Plot comparison?
title	Plot labels

Value

List of error statistics

Examples

library(sf)
validation.data <- data.frame(rnorm(10, mean = 0.2, sd = 1))
names(validation.data) <- c("validation")
validation.sf_ob <- validation.data
validation.data <- as.numeric(unlist(validation.data))
xy <- data.frame(x = c(0:9), y = rep(1, 10))
validation.sf_ob <- st_as_sf(cbind(validation.sf_ob, xy), coords = c("x", "y"))

m <- matrix(NA, 1, 10)
out.ras <- raster(m, xmn = 0, xmx = ncol(m), ymn = 0, ymx = nrow(m))
out.ras[] <- validation.data + rnorm(ncell(out.ras), mean = 0.01, sd = 0.2)

valid.stats <- errorGen(out.ras, validation.sf_ob, validation.data, plot = TRUE,
  title = "Validation Plot")
valid.stats

jsta/ipdw documentation built on March 15, 2023, 4:06 a.m.