Agenda

• Knitting a pdf document
• Creating tables in R
• Lab 06: on your own

Knitting a pdf document

• Currently your yaml at the top of your .Rmd files looks something like this:

---
title: "The title of your document"
name: "Your name"
output: html_document
---

Knitting a pdf document

• Currently your yaml at the top of your .Rmd files looks something like this:

---
title: "The title of your document"
name: "Your name"
output: html_document
---

Knitting a pdf document

• Currently your yaml at the top of your .Rmd files looks something like this:

---
title: "The title of your document"
name: "Your name"
output: pdf_document
---

• For this lab and your final project I want you to create .pdf files.

Making pretty tables

• We've been using the tidy() and glance() functions to print tables of our model output.
• These kind of look like "code" in our final reports
• We can make these prettier with the knitr package

lm(wt ~ am, data = mtcars) %>%
  tidy()

## # A tibble: 2 x 5
##   term        estimate std.error statistic  p.value
##   <chr>          <dbl>     <dbl>     <dbl>    <dbl>
## 1 (Intercept)     3.77     0.165     22.9  1.49e-20
## 2 am             -1.36     0.258     -5.26 1.13e- 5

Making pretty tables

• We've been using the tidy() and glance() functions to print tables of our model output.
• These kind of look like "code" in our final reports
• We can make these prettier with the knitr package
• Load the knitr package with library(knitr)
• Use the kable() function to output a pretty table

library(knitr)
lm(wt ~ am, data = mtcars) %>%
  tidy() %>%
  kable()

Putting all the R code at the end

• For these fancy reports, we want to see the R code, but we don't want it intersperced throughout the document.
• You can "hide" an R chunk by adding echo = FALSE to each of your chunks.

```{r, echo = FALSE}
```

• You can "hide" all of your chunks by adding this to the top of your .Rmd file

library(knitr)
opts_chunk$set(echo = FALSE)

• THEN at the end of you document (in the Appendix) you can add

```{r ref.label=knitr::all_labels(), echo = TRUE, eval = FALSE}
```

Open Lab 06: Building Reports in RStudio