From 254f20c3104f14eac4d7ca43ba3b1fd26593f485 Mon Sep 17 00:00:00 2001
From: Laurent Modolo <laurent.modolo@ens-lyon.fr>
Date: Thu, 19 Apr 2018 10:30:44 +0200
Subject: [PATCH] README.md: objectives of session 2

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

diff --git a/README.md b/README.md
index 05dd999..400f060 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,16 @@ In this session we play-back the steps of the creation of an Exel table
 - data.frame : dim, ncol, nrow
 - matrix
 - list
+
+## session 2
+In this session we extract the list of differentillay expressed genes from a
+DESeq2 .csv output. We then extract only the up-regulated and down-regulated
+genes.
+
+- load a table: read.table, read.csv
+- columns selection : boolean vector
+- lines selection : boolean vector
+- write a .csv and .Rdata file
+- path, working-directory, and .Rhistory file
+
+
-- 
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