From ddcdae41a160bcefada4143c32365c5b6f8c5ca9 Mon Sep 17 00:00:00 2001 From: Joanne Jang Date: Thu, 7 Jan 2016 11:46:28 -0800 Subject: [PATCH 1/2] fixing typo --- transform.Rmd | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/transform.Rmd b/transform.Rmd index 950c9f5..479a0c2 100644 --- a/transform.Rmd +++ b/transform.Rmd @@ -394,7 +394,7 @@ This function works similarly to the `select` argument in `base::subset()`. Beca -------------------------------------------------------------------------------- -### Exericses +### Exercises 1. Brainstorm as many ways as possible to select `dep_time`, `dep_delay`, `arr_time`, and `arr_delay` from `flights`. From cf8a66037e543f8b4387e63e85fe0fbbe575cfa9 Mon Sep 17 00:00:00 2001 From: Joanne Jang Date: Fri, 8 Jan 2016 15:38:03 -0800 Subject: [PATCH 2/2] fixing typo --- transform.Rmd | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/transform.Rmd b/transform.Rmd index 950c9f5..049fc92 100644 --- a/transform.Rmd +++ b/transform.Rmd @@ -534,7 +534,7 @@ ggplot(flights, aes(air_time - airtime2)) + geom_histogram() 1. Currently `dep_time()` and `arr_time()` are convenient to look at, but hard to compute with because they're not really continuous numbers. - Convert them to a more convenient represention of number of minutes + Convert them to a more convenient representation of number of minutes since midnight. 1. Compute the scheduled time by adding `dep_delay` to `dep_time`. Plot