```
a <- cbind(c(1,5,55,31),c(3,7,20,22))
b <- cbind(c(4,2,8,65),c(50,-90,20,32))
pointDistance(c(0, 0), c(1, 1), lonlat=FALSE)
pointDistance(c(0, 0), c(1, 1), lonlat=TRUE)
pointDistance(c(0, 0), a, lonlat=TRUE)
pointDistance(a, b, lonlat=TRUE)
#Make a distance matrix
dst <- pointDistance(a, lonlat=TRUE)
# coerce to dist object
dst <- as.dist(dst)
```

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