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Questions - distance

R: Recreating the Travelling Salesman Problem

I am working with the R programming language. I am trying to recreate the travelling salesman problem. The travelling salesman problem is a problem where a salesman has to visit "n" number ...
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stats_noob

r

time

combinations

distance

Votes: 0

Answers: 1

Latest Answer

To calculate the cumulative distance for all 6! routes for the given final_data could be done like this: set.seed(123) data_1 = data.frame(id = c(1,2,3), long = rnorm(3, -74, 1 ), lat = rnorm(3, 40, 1...
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r2evans

Python: Calculating the distance between points in an array

I would like to calculate the distance between data points in an array. Example A1 = array([[ 54. , 15. , 1. ], [ 55. , 13.66311896, 1. ], [ 56. ...
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Akhilesh Arkala

python

arrays

numpy

distance

Votes: 0

Answers: 1

Latest Answer

Pythagoras theorem states sqrt(a^2+b^2)=c where c is the distance between the tips of the orthogonal lines reaching point a and b. import math from math import sqrt dist_list=[] for i in A1[1:]: d...
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Regretful

Checking my math for distance between 2 points in miles

Hello I am trying to do a calculator of finding the distance between 2 points. Everything works properly. I just want to make sure that my math is correct for the calculations. I will give you 2 coord...
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KeyesCode

javascript

math

distance

Votes: 0

Answers: 1

Latest Answer

Yes, you seem to have implemented the Haversine formula correctly (https://en.wikipedia.org/wiki/Haversine_formula)
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Cereaubra

Calculating distance between multiple points at the same time of the day

I have two dataframes, one with my boat GPS positions (5512 records) and one with fishing boats positions (35381 records). I want to calculate the distance between my boat and all other fishing boats ...
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Silvia

r

distance

latitude-longitude

coercion

geographic-distance

Votes: 0

Answers: 1

Latest Answer

V2, Update (January 17, 2022) Glad it works for you. If you are willing to avoid for-loops you could consider a dplyr approach. Have a look. library(dplyr) df <- silvia %>% rowwise() ...
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Pax

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