From 4409e7d234670df3a4cd1d0f8a62068910c2f218 Mon Sep 17 00:00:00 2001
From: Sharif Olorin <sio@tesser.org>
Date: Wed, 19 Apr 2017 06:59:47 +0000
Subject: [PATCH] Add extract usage to readme

---
 README.md | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index c7dc447..5353fa4 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,18 @@ warden schema validate schema.json
 find _warden -name \*.warden -print0 | xargs -0 warden marker failed
 ```
 
+Extracting numeric samples
+--------------------------
+
+Samples can be extracted as CSV files from view markers for easier
+interactive analysis.
+
+```
+warden-sample extract \
+    -o samples.csv \
+    _warden/$view/$data_dates/*/*.json
+```
+
 Future Work
 -----------
 
@@ -91,4 +103,4 @@ Further reading
  - [Documentation](https://github.com/ambiata/warden/tree/master/doc)
    (or find a built version on S3 under
    `s3://ambiata-dispensary-v2/doc/master/warden/`).
- - [Talk slides](https://github.com/ambiata/talks/blob/master/warden-2016-05-20/slides.pdf).
\ No newline at end of file
+ - [Talk slides](https://github.com/ambiata/talks/blob/master/warden-2016-05-20/slides.pdf).