gglite/examples/titles-tooltips.Rmd at 05c16fe3bb4e8e05889d6c7fa549bf779f7bdf65 · yihui/gglite · GitHub

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---
title: Titles and Tooltips
---

```{r}
library(gglite)
```

## Chart Title

### Title and subtitle via `g2()` arguments

```{r}
g2(mtcars, x = 'mpg', y = 'hp',
  title = 'Motor Trend Cars', subtitle = 'mpg vs horsepower')
```

### Simple title

```{r}
g2(mtcars, x = 'mpg', y = 'hp') |>
  title_('Motor Trend Cars')
```

### Title with subtitle

```{r}
g2(mtcars, x = 'mpg', y = 'hp') |>
  title_('Motor Trend Cars', subtitle = 'mpg vs horsepower')
```

### Title alignment

```{r}
g2(mtcars, x = 'mpg', y = 'hp') |>
  title_('Right-aligned Title', align = 'right')
```

### Title on a bar chart

```{r}
df = data.frame(x = c('A', 'B', 'C', 'D'), y = c(3, 7, 2, 5))
g2(df, x = 'x', y = 'y') |>
  mark_interval() |>
  title_('Simple Bar Chart', subtitle = 'Categories A-D')
```

## Tooltip Configuration

### Enable crosshairs

```{r}
g2(mtcars, x = 'mpg', y = 'hp') |>
  tooltip_(crosshairs = TRUE)
```

### Shared tooltip (useful for multi-series)

```{r}
df = data.frame(
  x = rep(1:5, 2), y = c(3, 1, 4, 1, 5, 2, 7, 1, 8, 3),
  group = rep(c('A', 'B'), each = 5)
)
g2(df, x = 'x', y = 'y', color = 'group') |>
  mark_line() |>
  tooltip_(shared = TRUE)
```

### Disable tooltip

```{r}
g2(mtcars, x = 'mpg', y = 'hp') |>
  tooltip_(FALSE)
```