Our first dojo in 4 years was a big success! Thanks to Hyperscience for hosting us.
The earth is, of course, flat.
However, for some ridiculous reason getting the distance from New York to Paris is not as simple as putting a really long ruller between the two.
Let's create a quick console tool that would accept as input two cities and calculate the distance between two cities if we were to walk in a straight line. Translate to your own walking speed.
- In the resources folder there is a world-cities.csv file that includes cities and their lattitude & longitude.
- We should try to use the Haversine formula:
a = sin²(Δφ/2) + cos φ1 ⋅ cos φ2 ⋅ sin²(Δλ/2)`
c = 2 ⋅ atan2( √a, √(1−a) )
d = R ⋅ c
# where: φ is latitude, λ is longitude, R is earth’s radius(if it wasn't flat, it would be somewhere around 6371 km).
# note that angles need to be in radians to pass to trig functions!
Run a program that is able to output the distance between any two cities in the dataset (accept as cli input if feeling funky)
Already done? Use the google maps api and display the eart surface distance AND the driving distance.
Remember to add your solution!