Determine which points fall within a specified radius by utilizing solely an array

Question

Determine which points fall within a specified radius by utilizing solely an array

I'm developing an application that utilizes Leaflet to store GPS coordinates of specific locations in a table format [lat,lng]. This functionality is only accessible from the back end. On the front end, I need to retrieve the current position and generate a radius of "n" kilometers around it. I then want to filter all records within that specified radius.

Here's the challenge: I do not intend to show a map on the front end; my objective is solely to display a list of records within the defined radius. The Leaflet map will not be shown due to network traffic constraints.

Any suggestions on how this can be achieved?

javascript gps leaflet markers

Answer 1

Answer №1

If you're not showcasing a map, chances are Leaflet isn't part of your toolkit.

While Leaflet does offer ways to calculate distances, there are plenty of other geospatial libraries that provide similar functionality without requiring a map display. For example, Turfjs has a function for determining distance:

var from = turf.point([-75.343, 39.984]);
var to = turf.point([-75.534, 39.123]);
var options = {units: 'miles'};

var distance = turf.distance(from, to, options);

However, if your database contains a significant amount of data points, it might be worth exploring the option of implementing filtering directly in the backend database through spatial queries, provided that your database supports this feature.

Answer 2

If you're not showcasing a map, chances are Leaflet isn't part of your toolkit.

While Leaflet does offer ways to calculate distances, there are plenty of other geospatial libraries that provide similar functionality without requiring a map display. For example, Turfjs has a function for determining distance:

var from = turf.point([-75.343, 39.984]);
var to = turf.point([-75.534, 39.123]);
var options = {units: 'miles'};

var distance = turf.distance(from, to, options);

However, if your database contains a significant amount of data points, it might be worth exploring the option of implementing filtering directly in the backend database through spatial queries, provided that your database supports this feature.

Determine which points fall within a specified radius by utilizing solely an array

Answer №1

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