The **knitr** package (Xie
2016) is an alternative tool to Sweave based on a different
design with more features. This document is not an introduction, but
only serves as a placeholder to guide you to the real manuals, which are
available on the package website https://yihui.org/knitr/^{1}, and remember to read
the help pages of functions in this package. There is a book (Xie 2015) for this package, but it may not be
useful to those who prefer digging out information on the web.

Anyway, here is a code chunk that shows you can compile vignettes
with **knitr** as well using R 3.0.x, which supports
non-Sweave vignettes:

```
options(digits = 4)
rnorm(20)
```

```
## [1] -0.432492 -1.934594 0.090109 -0.537050 0.349098 0.156540 -0.202615
## [8] -2.024916 -0.940910 0.602132 0.624322 -0.422067 -0.706236 -1.168691
## [15] -0.481862 0.272402 -0.528331 -0.497320 -0.008859 -1.556787
```

```
= lm(dist ~ speed, data = cars)
fit = coef(fit) b
```

Estimate | Std. Error | t value | Pr(>|t|) | |
---|---|---|---|---|

(Intercept) | -17.579 | 6.7584 | -2.601 | 0.0123 |

speed | 3.932 | 0.4155 | 9.464 | 0.0000 |

The fitted regression equation is \(Y=-17.5791+3.9324x\).

```
par(mar=c(4, 4, 1, .1))
plot(cars, pch = 20)
abline(fit, col = 'red')
```

Xie, Yihui. 2015. *Dynamic Documents with R and
Knitr*. 2nd ed. Boca Raton, Florida: Chapman; Hall/CRC. https://yihui.org/knitr/.

———. 2016. *Knitr: A General-Purpose Package for Dynamic Report
Generation in r*. https://yihui.org/knitr/.

e.g. the main manual and the graphics manual↩︎