January 2016
Intermediate to advanced
240 pages
4h 42m
English
Content preview from Elasticsearch Essentials
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Geo-aggregations
Sometimes searches may return too many results but you might be just interested in finding out how many documents exist in a particular range of a location. A simple example can be to see how many news events related to crime occurred in an area by plotting them on a map or by generating a heatmap cluster of the events on the map, as shown in the following image:
Elasticsearch offers both metric and bucket aggregations for geo_point fields.
Geo distance aggregation
Geo distance aggregation is an extension of range aggregation. It allows you to create buckets of documents based on specified ranges. Let's see how this can be done using ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.