1 files changed, 25 insertions, 0 deletions
diff --git a/geo/geo.go b/geo/geo.go
new file mode 100644
index 0000000..0fcff14
--- /dev/null
+++ b/geo/geo.go
@@ -0,0 +1,25 @@
+package geo
+
+import (
+	"math"
+
+	"github.com/jftuga/geodist"
+)
+
+func DistanceM(a, b geodist.Coord) float64 {
+	_, distanceKm := geodist.HaversineDistance(a, b)
+	return distanceKm * 1000
+}
+
+func Nearest(coords []geodist.Coord, target geodist.Coord) (int, float64) {
+	bestIndex := 0
+	bestDistance := math.Inf(1)
+	for index := 0; index < len(coords); index++ {
+		distance := DistanceM(coords[index], target)
+		if distance < bestDistance {
+			bestIndex = index
+			bestDistance = distance
+		}
+	}
+	return bestIndex, bestDistance
+}