From 2b35078cdc4472422e7e2c5714ae2de3c06918af Mon Sep 17 00:00:00 2001
From: Aivaras Gotovskis <aivaras.gotovskis@ongr.io>
Date: Fri, 10 Jul 2015 12:05:00 +0300
Subject: [PATCH] Add Histogram aggregation doc.
---
docs/Aggregation/Histogram.md | 34 ++++++++++++++++++++++++++++++++++
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+# Histogram Aggregation
+
+> More info about histogram aggregation is in the [official elasticsearch docs][1]
+
+A multi-bucket values source based aggregation that can be applied on numeric values extracted from
+the documents. It dynamically builds fixed size (a.k.a. interval) buckets over the values.
+
+## Simple example
+
+```JSON
+{
+ "aggregations": {
+ "agg_prices": {
+ "histogram": {
+ "field": "price",
+ "interval": 50
+ }
+ }
+ }
+}
+```
+
+And now the query via DSL:
+
+```php
+$histogramAggregation = new HistogramAggregation('prices', 'price', 50);
+
+$search = new Search();
+$search->addAggregation($histogramAggregation);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-histogram-aggregation.html
--
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