---
title: "Dockerized R Markdown Document"
author: "Nan Xiao"
date: "`r Sys.Date()`"
output:
  html_document
liftr:
  from: "rocker/r-base:latest"
  maintainer: "Nan Xiao"
  maintainer_email: "nanx@uchicago.edu"
  cranpkg:
    - kernlab
  extra:
    - ADD https://raw.githubusercontent.com/road2stat/liftr/master/inst/docker.Rmd /
    - COPY /Users/tengfei/Code/gitrepos/liftr/inst/Dockerfile.Rmd /
---

## Spectral clustering example

This is an R Markdown document that could be rendered under a Docker container using `liftr`. The document requires the `specc()` function in the `kernlab` package on CRAN to perform a simple spectral clustering:

```{r specc, fig.cap = 'Spectral Clustering of Spirals Data'}
library("kernlab")
data(spirals)
sc = specc(spirals, centers = 2)
print(sc)
plot(spirals, col = sc)
```

## Options of liftr in this document

The document front-matter metadata includes the options for `liftr`, which is used for dockerizing the document:

```{r liftrmeta}
rmarkdown::metadata$liftr
```

## System and session information

The R session information of the Docker container is shown below.

```{r session}
sessionInfo()
```