---
title: "Penguins — single-species report"
format: html
params:
  species: Gentoo
---

```{r}
#| label: setup
#| message: false
library(dplyr)
library(ggplot2)

data(penguins)
one <- penguins |>
  filter(species == params$species, !is.na(bill_len), !is.na(bill_dep))
```

This report covers **`{r} params$species`** penguins only. Passing `species` as a **parameter** lets
the same source file render one report per species.

## `{r} params$species` at a glance

```{r}
#| label: fig-bill
#| echo: false
#| fig-cap: !expr paste0("Bill length versus depth for ", params$species, " penguins.")
#| fig-alt: !expr paste0("Scatter plot of bill depth against bill length for ", params$species, " penguins. Each point is one bird.")
ggplot(one, aes(bill_len, bill_dep)) +
  geom_point(alpha = 0.8) +
  labs(x = "Bill length (mm)", y = "Bill depth (mm)") +
  theme_minimal(base_size = 12)
```

`{r} nrow(one)` `{r} params$species` penguins had both bill measurements recorded.

## Session {.appendix .unnumbered}

<details>
<summary>Session info</summary>

```{r}
#| label: session
sessionInfo()
```

</details>