Cal.recon: Calculating reconstruction error

In spherepc: Spherical Principal Curves

Description

This function calculates reconstruction error.

Usage

Cal.recon(data, line)

Arguments

data	matrix or data frame consisting of spatial locations with two columns. Each row represents longitude and latitude.
line	longitude and latitude of a line as a matrix or data frame with two columns.

Details

This function calculates reconstruction error from the data to the line. Longitude should range from -180 to 180 and latitude from -90 to 90. This function requires to load 'geosphere' R package.

Value

summation of squared distance from the data to the line on the unit sphere.

Author(s)

Jongmin Lee

Examples

library(geosphere)           # This function needs to load 'geosphere' R packages.
data <- rbind(c(0, 0), c(50, -10), c(100, -70))
line <- rbind(c(30, 30), c(-20, 50), c(50, 80))
Cal.recon(data, line)

spherepc documentation built on Oct. 7, 2021, 9:14 a.m.