From 65ac6c06fd48562f11387017920afe5f63486845 Mon Sep 17 00:00:00 2001
From: Alexander Zobnin <alexanderzobnin@gmail.com>
Date: Wed, 13 Feb 2019 14:22:08 +0300
Subject: [PATCH] add docs for removeAboveValue(), removeBelowValue() and
 transformNull(), #562

---
 docs/sources/reference/functions.md | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/docs/sources/reference/functions.md b/docs/sources/reference/functions.md
index b83120b58..be6305f10 100644
--- a/docs/sources/reference/functions.md
+++ b/docs/sources/reference/functions.md
@@ -88,6 +88,35 @@ calculates moving average over 60 points (if metric has 1 second resolution it m
 ```
 ---
 
+### _removeAboveValue_
+```
+removeAboveValue(N)
+```
+Replaces series values with `null` if value > N
+
+Examples:
+```
+removeAboveValue(1)
+```
+
+---
+
+### _removeBelowValue_
+```
+removeBelowValue(N)
+```
+Replaces series values with `null` if value < N
+
+---
+
+### _transformNull_
+```
+transformNull(N)
+```
+Replaces `null` values with N
+
+---
+
 ## Aggregate
 
 ### _aggregateBy_