# How to use the haversine.Unit.KILOMETERS function in haversine

## To help you get started, we’ve selected a few haversine examples, based on popular ways it is used in public projects.

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oasis-open / cti-python-stix2 / stix2 / environment.py View on Github
``````def partial_location_distance(lat1, long1, lat2, long2, threshold):
"""Given two coordinates perform a matching based on its distance using the Haversine Formula.

Args:
lat1: Latitude value for first coordinate point.
lat2: Latitude value for second coordinate point.
long1: Longitude value for first coordinate point.
long2: Longitude value for second coordinate point.
threshold (float): A kilometer measurement for the threshold distance between these two points.

Returns:
float: Number between 0.0 and 1.0 depending on match.

"""
from haversine import haversine, Unit
distance = haversine((lat1, long1), (lat2, long2), unit=Unit.KILOMETERS)
result = 1 - (distance / threshold)
logger.debug(
"--\t\tpartial_location_distance '%s' '%s' threshold: '%s'\tresult: '%s'",
(lat1, long1), (lat2, long2), threshold, result,
)
return result``````

## haversine

Calculate the distance between 2 points on Earth.

MIT