not death

1. drop question 9
2. show examples for tbls for question 8 and also when rownames become column

Dont' use head in code. Just do https://stackoverflow.com/questions/23114654/knitr-output-hook-with-an-output-lines-option-that-works-like-echo-26/23147563#23147563

DC to https://www.dataquest.io/m/332-introduction-to-programming-in-r/

Get rid of mtcars rownames and talk about tidy philosophy.

also, introduce %in% here

Remove qplot - just start them out in ggplot.

Just put the vector - dput confuses anyone.

And also add parentheses to function names.
ie in data cleaning lab:

2. Create a data set called namat which is equal to is.na(bike).
   What is the class of namat? Run rowSums and colSums on namat.
   These represent the number of missing values in the rows and columns of
   bike. Don't print rowSums, but do a table of the rowSums

Should be:

2. Create a data set called namat which is equal to is.na(bike).
   What is the class of namat? Run rowSums() and colSums() on namat.
   These represent the number of missing values in the rows and columns of
   bike. Don't print rowSums(), but do a table() of the rowSums()

I saw that it happened in the video, but on my test it's not happening and I don't know why.
#the code

3. Use the read_excel() function in the readxl package to

read in the dataset

destfile = file.path(tempdir(), "Monuments.xlsx")
download.file("http://johnmuschelli.com/intro_to_r/data/Monuments.xlsx",
destfile = destfile)
mon = read_excel(destfile)

#the error

library(readxl)
destfile = file.path(tempdir(), "Monuments.xlsx")
download.file("http://johnmuschelli.com/intro_to_r/data/Monuments.xlsx",

•           destfile = destfile)
  

trying URL 'http://johnmuschelli.com/intro_to_r/data/Monuments.xlsx'
Content type 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' length 14013 bytes (13 KB)
downloaded 13 KB

mon = read_excel(destfile)
Error in read_fun(path = path, sheet = sheet, limits = limits, shim = shim, :
Evaluation error: zip file 'C:\Users\G\AppData\Local\Temp\RtmpAjmis5/Monuments.xlsx' cannot be opened.
mon = read_excel(destfile)
Error in read_fun(path = path, sheet = sheet, limits = limits, shim = shim, :
Evaluation error: zip file 'C:\Users\G\AppData\Local\Temp\RtmpAjmis5/Monuments.xlsx' cannot be opened.
library(readxl)
library(readr)
mon = read_excel(destfile)
Error in read_fun(path = path, sheet = sheet, limits = limits, shim = shim, :
Evaluation error: zip file 'C:\Users\G\AppData\Local\Temp\RtmpAjmis5/Monuments.xlsx' cannot be opened.

theres a bunch of stuff from previous years that we don't really use...is it worth cleaning up the repository?

due to deprication

Just tell them to stop using any base functions, like relevel and levels and do the forcats one.

corrr https://drsimonj.svbtle.com/exploring-correlations-in-r-with-corrr

Add in https://lindeloev.github.io/tests-as-linear/

• Move summarize before summarize_all
• Fix last lab about qplot not hist

instead of character/factor with a ton of levels

a lot of the data frames dont have the car names