Calculate distance between two coordinates for a fixed point in a DataFrame

Question

I have the following DataFrame in pandas:

code	latitude	longitude
01	40.410323	-3.993046
02	41.490604	1.696572
03	39.287817	-0.435448
04	38.594316	-0.128489
05	36.900799	-3.423063
06	36.541667	-4.625

I want to create a new column called km_to_fixed_coords in which the distance in coordinates to a new fixed point is calculated, which will be the same for all rows (36.7196, -4.42002).

This code calculates the distance between two coordinates in kilometres.

import geopy.distance
# (latitude, longitude)
coords_1 = (x, y)
fixed_coords = (36.7196, -4.42002)

print(geopy.distance.distance(coords_1, fixed_coords).km)

The resulting DataFrame should look like the example:

code	latitude	longitude	km_to_fixed_coords
01	40.410323	-3.993046	411.3819700981563
02	41.490604	1.696572	748.2482442578678
03	39.287817	-0.435448	451.2806740048897
04	38.594316	-0.128489	432.0145327165797
05	36.900799	-3.423063	91.20470627900332
06	36.541667	-4.625342	26.96511660526825

Asked By: Carola

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Source

Answer 1

apply a method on rows like this ?

import geopy.distance

# (latitude, longitude)
fixed_coords = (36.7196, -4.42002)

df['km_to_fixed_coords'] = df.apply(
    lambda row: geopy.distance.distance((row.latitude, row.longitude), fixed_coords).km,
    axis=1
)

Answered By: Devyl

Answer 2

from typing import Tuple
import geopy.distance


def distance(
    lat: float, lon: float, fixed_coords: Tuple[float] = (36.7196, -4.42002)
) -> float:
    return geopy.distance.distance((lat, lon), fixed_coords).km


df["km_to_fixed_coords"] = df.apply(lambda row: distance(row.latitude, row.longitude))

Answered By: RedTomato

Answer 3

from django.contrib.gis.geos import Point

#Current Location (longitude , latitude )
current_coord = Point(-3.993046, 40.410323 )
#Target Location (longitude , latitude )
target_coord = Point(1.696572, 41.490604 )
#Calculate distance in kilometer
distance = current_coord.distance(target_coord) * 100

Answered By: Imran Bhouiyan

Calculate distance between two coordinates for a fixed point in a DataFrame

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