param-rmd-example

---
title: "Visualizing the ocean floor"
output: html_document
params:
  data: "hawaii"
---

```{r include = FALSE}
library(marmap)
library(ggplot2)
```

The [marmap](https://cran.r-project.org/web/packages/marmap/index.html) package provides tools and data for visualizing the ocean floor. Here is an example contour plot of marmap's ``r params$data`` dataset.

```{r echo = FALSE}
data(list = params$data)
autoplot(get(params$data))
```