Identify points that are greater than xKm away from other points

MuneebAfzal

I am hoping you can help me.

I have a list of locations (let's call them shops)  that are spread across the UK. I would like to be able to identify the shops that are more than 1km away from another shop in the dataset.

I can't figure out how to extract these shops into a new layer. Tried looking at existing posts too and couldn't find one with this problem. Apologies if there is already a post.

Cheers,

Muneeb

AmandaRing

Hi @MuneebAfzal,

Here's what I would suggest doing:
1. Add your "Shops" layer to the map twice. You can do this by opening the 'Add Layer' menu twice and selecting the same layer each time.
2. Open Analysis > Summarize Data > Summarize Nearby

3. Use "Shops" as both the layer from which distances will be measured, and the layer to summarize, and use a Line distance of 1km. 
4. If you want the output as point features, uncheck the 'Return bounding areas' checkbox. If not all your data is currently visible on the map, make sure you uncheck 'Use current map extent' to ensure all shop features are included in the analysis.
5. Run the tool. The output will include a 'Count of Points' field that will determine how many shops are within 1km of each shop.
6. Since we're summarizing the same features near themselves, every shop will always have at least one shop within 1km - that's itself. To find shops that are more than 1km away from other shops, you'll want to filter the results to exclude any features with a value of more than 1 for 'Count of Points'. To do this, add a Filter where 'Count of Points is at most 1'. 

7. Depending on what you want to do with the results, there are several follow-up step options:
A) To create a distinct but related layer based on the filter, create a hosted feature layer view with that filter applied
If you wanted to download the layer, you could use the Extract Data tool (Analysis > Manage Data > Extract Data) to package the layer into a CSV, KML, Shapefile, or File Geodatabase.
C) If you wanted a permanent hosted feature layer, you could run the Find Existing Locations tool (Analysis > Find Locations > Find Existing Locations) as @Katie_Clark suggested, with the same filter expression applied to the layer.