Developing Data Products - Quiz 2

Question 1

Which of the following are absolutely necessary for creating a functioning shiny app? (Check all that apply)

*What is rmarkdown? (Check all that apply.)

A simplified format that, when interpreted, incorporates your R analysis into your document. A form of LaTeX typesetting. A format that can be interpreted into markdown (which is a simplified markup language). A simplified XML format that can be interpreted into R.

Question 2

In rmarkdown presentations, in the options for code chunks, what command prevents the code from being repeated before results in the final interpreted document?

• eval = FALSE
• echo = FALSE
• cache = FALSE
• comment = FALSE

Question 3

In rmarkdown presentations, in the options for code chunks, what prevents the code from being interpreted?

• eval = FALSE
• run = FALSE
• cache = FALSE
• eval = NULL

Question 4

What is leaflet? (Check all that apply.)

• An R package interface to the javascript library of the same name
• A tool for reproducible documents
• An R package for creating 3D rendered isomaps
• A javascript lirary for creating interactive maps

Question 5

The R command

df %>% leaflet() %>% addTiles()

is equivalent to what? (Check all that apply)

addTiles(leaflet(df))

leaflet() %>% addTiles()

Question 6

If I want to add popup icons to my leaflet map in R, I should use.

• addTiles
• addMarkers
• dplyr
• leaflet