add mention of tidyr to instructor guide

Added mention of tidyr to instructor training guide on the main tidyr functions used in this lesson. Fixes: issue datacarpentry#269
wdahdul · Feb 23, 2018 · 75f3fc4 · 75f3fc4
1 parent a4fe7b4
commit 75f3fc4
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/instructor-notes.md b/instructor-notes.md
@@ -107,6 +107,10 @@ The two main goals for this lessons are:
 * For this lesson make sure that learners are comfortable using pipes.
 * There is also sometimes some confusion on what the arguments of `group_by`
   should be.
+
+### Using tidyr to reshape data for plotting
+* This lesson uses the tidyr package to reshape data for plotting
+* After this lesson students should be familiar with the spread() and gather() functions available in tidyr
 
 ### Visualizing data with ggplot2