haversine_distance | Haversine formula to calculate the great-circle distance | Math library

I have 9 points (longitudes, latitudes in degrees) on the surface of Earth follows.

I've got a sql where I need to constantly look back 4 days. This code would run once a week so I need to look 7 days back. My where clause is set stationary and looks between two dates, However I need it to look back 7 days all the time.

Here is a snippet of my code:

I need to return distances between two points using the haversine function. I retrieve an array of cordinates from the database using a scope. But I am getting trouble looping through the array to return distances between each created pair.

In the show(), I want the viewed address to be the base/origin point then it should loop through the database to pair with all the other address points to return their distances based on the @origin.

Currently, I am only returning one value. I really need assistance.

Below is my code

In my Rails project I have a table called "items", where each item has a latitude and longitude property. When I retrieve the items for my client, I fetch the current user's longitude and latitude. Using these two sets of coordinates, I want to use a haversine function and fetch 100 results with the smallest haversine distance.

The SQL should look something like this:

I am working with the California Housing data set in scikit-learn. I want to engineer two binary features: "within 10 km of San Francisco" and "within 10 km of Los Angeles". I created a custom transformer that works fine on its own, but throws a TypeError when I put it into a ColumnTransformer. Here's the code:

I'm new to scala / spark and I don't know how to ask this kind of question (technical word ...). I have a large csv file, I want to read it in a dataframe and distribute it in several blocks according to a condition on columns and apply the treatment I want on each of the blocks.

Example of my csv file

I am trying to build an app with ionic 4 and firebase. There are two types of users: simple users and admins. As an admin, I want to see on map where the users are, but only in a certain area. I was able to display my position on map and to update the marker with watchPosition(). I added some locations in my database for the simple users to see if i can access them and then display them on map. Everything worked well, the markers were displayed on map, but now i got this error: Cannot read property 'latitude' of undefined, but i didn't change anything in my code (where i accessed the locations of users) It's strange because a few days ago it worked well, and it worked on android too. Is this a problem from firebase or from geolocation, anyone have an idea?

This is my code:

I have a DATAFRAME :

import pysal as ps

I'm tring to import pysal but I get the following:

cannot import name 'haversine_distances' from 'sklearn.metrics.pairwise'

So I tried: from sklearn.metrics.pairwise import haversine_distances

and I get the same message. Any suggestions?