Display points on map within (x) km radius of selected point on another layer.

[akelleway]

Hi,

I have map, as shown below, with one layer (yellow) to show various business locations, and a separate layer (blue) to show various airport locations.

I am aiming to have this map set up so that when a user selects a business name from an adjacent table in the same sheet, it will zoom in to let's say a 50km radius of that point and only show the airports within that radius.

Currently the businesses are plotted using Coordinates (AgentLongitude_AgentLatitude), and the airports using IATA codes (AirportCode), but I do also have a coordinate field for these if required (AirportLongitude_AirportLatitude).

I had found a similar question from a few years ago here, but couldn't quite get it to work, so any help would be much appreciated.

[QFabian]

Hi @akelleway one option is first in script create the distance between points, using for example : 

https://community.qlik.com/t5/New-to-Qlik-Analytics/Calculating-distance-between-points-using-longit...

then, with that new distance field, you can add a set analysis expression to specify the distance expected inside the map chart to include that points