## Haversine.jl

Greater Circle tools for Julia to be used for fast and broadcastable geospatial calculations using spherical coordinates
Author techshot25
Popularity
3 Stars
Updated Last
2 Years Ago
Started In
February 2021

# Haversine.jl

Haversine (Great Circle) distance tools for Julia

This project contains helper geospatial tools using Haversine which assume a perfectly spherical earth to compute special geospatial functions. All the functions included are using pairwise distance and will require mapping to work on arrays. Contributions are welcome, submit a PR and I will review it as soon as I can.

### HaversineDistance

This uses the great circle distance to find the approximate distance between two coordinates assuming a perfectly spherical earth

```using Haversine

p1 = GeoLocation(λ=1, ϕ=2)
p2 = GeoLocation(3, 4) # (lon, lat) in degrees

# returns distance in meters
HaversineDistance(p1, p2)
>>> 314283.25507368386```

### HaversineBearing

This returns the bearing/heading between from point 1 to point 2 in degrees

```using Haversine

p1 = GeoLocation(λ=1, ϕ=2)
p2 = GeoLocation(3, 4)

HaversineBearing(p1, p2)
>>> 44.91272645906142```

### HaversineDestination

Given a point, bearing, and distance, show the coordinates of the final destination

```using Haversine

p = [1, 2] # (lon, lat) in degrees
θ = 30 # heading in degrees
d = 2 # distance in meters

# returns destination coordinates as Array[lon, lat]
HaversineDestination(p, θ, d)
>>> 2-element Array{Float64,1}:
>>>  1.0000089986979082
>>>  2.000015576707113```

All functions as of version 1.0.0 can now support broadcasting. Arguments can broadcast to support array-like inputs

```using Haversine

p = GeoLocation(5, 4) # initial location
θ = [30, 60] # multiple headings
d = [10, 900000] # destination for each heading

HaversineDestination(p, θ, d)
>>> 2-element Vector{GeoLocation}:
>>>  GeoLocation(5.000045075887166, 4.0000778835344555)
>>>  GeoLocation(12.072951161820168, 8.006647216172182```
```using Haversine

p1 = [GeoLocation(1, 2), GeoLocation(3, 4)] # multiple points
p2 = [GeoLocation(5, 1), GeoLocation(0, 9)]

HaversineBearing(p1, p2)
>>> 2-element Array{Float64,1}:
>>>  103.98283865771535
>>>  -30.644744331249175```

### Used By Packages

No packages found.