How to find center coordinate between N-number of geographic coordinates?

Question

iOS

Friends,
I have N-number of marks on the map, I need to find the coordinates of the middle.
I need the coordinates of the middle in order to display the map on the screen in such a way that all available marks fit on it.
I would be very grateful if you tell me how to do this.
I store the points in ElasticSearch, process them using PHP, and display them in an iOS application.

Answer 1

The X coordinate will be the arithmetic mean of all the X coordinates of your points.
Similar to Y.
I hope the principle is clear.
In fact, this is the center of mass if the points are the same, although in theory they can be given weights.
I recommend doing it in two passes.
1) First, just count the center.
2) See which points (fluctuations, outliers) are further than 1.5 of the screen, exclude them.
3) Again, consider the center based on the remaining ones - and now this will be the solution.