USCA function

USCA312/USCA50 -- 312/50 cities in the US and Canada

The USCA312 dataset contains the distances between 312 cities in the US and Canada as an object of class TSP. USCA50 is a subset of USCA312 containing only the first 50 cities. data

Format

USCA312 and USCA50 are objects of class TSP. USCA312_GPS is a data.frame with city name, long and lat.

Source

John Burkardt, CITIES -- City Distance Datasets, Florida State University, Department of Scientific Computing

Details

The USCA312_GPS dataset contains the location (long/lat) of the 312 cities.

Examples

data("USCA312")

## calculate a tour
tour <- solve_TSP(USCA312)
tour

# Visualize the tour if package maps is installed
if(require("maps")) {

  library(maps)
  data("USCA312_GPS")
  head(USCA312_GPS)

  plot((USCA312_GPS[, c("long", "lat")]), cex = .3)
  map("world", col = "gray", add = TRUE)
  polygon(USCA312_GPS[, c("long", "lat")][tour,], border = "red")
}

Author(s)

Michael Hahsler