---
title: "Other {gridpattern} Patterns"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Other {gridpattern} Patterns}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  dev = "ragg_png",
  fig.width = 7,
  fig.height = 4
)
```

```{r setup}
suppressPackageStartupMessages({
  library(ggplot2)
  library(ggpattern)
})
```

## Introduction

Several dedicated `{ggpattern}` vignettes cover many `{gridpattern}` patterns:

```{r covered-list, results="asis", echo=FALSE}
# Patterns covered in other ggpattern vignettes
covered <- list(
  "patterns-stripes" = c("stripe", "crosshatch", "wave", "weave"),
  "patterns-points" = c("circle", "pch", "regular_polygon", "rose"),
  "patterns-tilings" = c("polygon_tiling", "magick"),
  "patterns-image" = c("image", "placeholder"),
  "patterns-noise" = c("ambient", "plasma", "gradient")
)

all_patterns <- sub(
  "^grid\\.pattern_", "",
  grep("^grid\\.pattern_", ls(getNamespace("gridpattern")), value = TRUE)
)
other_patterns <- setdiff(all_patterns, unlist(covered))
vignette_url <- "https://trevorldavis.com/R/ggpattern/dev/articles"
lines <- mapply(function(vignette, patterns) {
  last <- if (length(patterns) >= 3L) ", and " else " and "
  pats <- glue::glue_collapse(glue::glue("`{patterns}`"), sep = ", ", last = last)
  glue::glue("* [{vignette}]({vignette_url}/{vignette}.html): {pats}")
}, names(covered), covered)
cat(lines, sep = "\n")
```

The following `{gridpattern}` patterns are not yet featured in such a dedicated `{ggpattern}` vignette:

```{r pattern-list, results="asis", echo=FALSE}
gridpattern_url <- "https://trevorldavis.com/R/gridpattern/dev/reference"
links <- glue::glue(
  "* [`{other_patterns}`]({gridpattern_url}/grid.pattern_{other_patterns}.html)"
)
cat(links, sep = "\n")
```


## Data

Standard data used in the example plots below.

```{r}
df <- data.frame(trt = c("a", "b", "c"), outcome = c(2.3, 1.9, 3.2))
```

## Pattern 'aRtsy'

The `aRtsy` pattern generates generative art fills powered by the [`{aRtsy}`](https://koenderks.github.io/aRtsy/) package.
This pattern requires `{aRtsy}` to be installed.  Use `gridpattern::names_aRtsy()` to list all supported types.

For more information see [`help("grid.pattern_aRtsy", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/reference/grid.pattern_aRtsy.html).

```{r artsy-example, fig.cap="", fig.alt="Bar chart using the aRtsy pattern", eval=requireNamespace("aRtsy", quietly=TRUE)}
set.seed(42)
ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(
    aes(pattern_type = trt),
    pattern = "aRtsy",
    pattern_fill = "steelblue",
    colour = "black"
  ) +
  scale_pattern_type_manual(values = c("strokes", "maze", "flow")) +
  theme_bw() +
  labs(title = "pattern = 'aRtsy'")
```

## Pattern 'fill'

The `fill` pattern simply fills the area with a solid colour (any `pattern_fill` aesthetic will cover the `fill` aesthetic).

For more information see
[`help("grid.pattern_fill", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/reference/grid.pattern_fill.html).

```{r fill-example, fig.cap="", fig.alt="Bar chart using the fill pattern"}
ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(
    aes(pattern_fill = trt),
    pattern = "fill",
    colour = "black"
  ) +
  theme_bw() +
  labs(title = "pattern = 'fill'")
```

## Pattern 'hatch'

The `hatch` pattern draws heraldic colour hatching.
Each hatching *type* corresponds to a traditional tincture (e.g. `"gules"` for red, `"azure"` for blue).
Use `gridpattern::names_hatch()` to list all supported types.

For more information see
[`help("grid.pattern_hatch", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/reference/grid.pattern_hatch.html)
and [`vignette("hatching", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/articles/hatching.html).

```{r hatch-example, fig.cap="", fig.alt="Bar chart using the hatch pattern with heraldic types"}
ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(
    aes(pattern_color = trt, pattern_type = trt),
    fill = "white",
    pattern = "hatch",
    pattern_subtype = "combinatorial",
    colour = "black"
  ) +
  scale_pattern_type_manual(values = c("gules", "azure", "sable")) +
  scale_pattern_color_manual(values = c("darkred", "darkblue", "black")) +
  theme_bw() +
  labs(title = "pattern = 'hatch'")
```

## Pattern 'line'

The `line` pattern draws stroked lines using the device's native line
renderer.  Unlike `stripe` (which fills bands with solid colour), `line`
honours all of R's built-in `linetype` values — including `"dotdash"`,
`"twodash"`, and custom hex-string line types.

For more information see
[`help("grid.pattern_line", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/reference/grid.pattern_line.html).

```{r line-example, fig.cap="", fig.alt="Bar chart using the line pattern with varied linetypes"}
ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(
    aes(pattern_linetype = trt),
    pattern = "line",
    pattern_colour = "black",
    pattern_density = 0.5,
    colour = "black",
    fill = "white"
  ) +
  scale_pattern_linetype_manual(values = c("solid", "dotted", "twodash")) +
  theme_bw() +
  labs(title = "pattern = 'line'")
```

## Pattern 'none'

The `none` pattern renders no pattern overlay.

For more information see
[`help("grid.pattern_none", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/reference/grid.pattern_none.html).

```{r none-example, fig.cap="", fig.alt="Bar chart using the none pattern"}
ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(
    pattern = "none",
    fill = "steelblue",
    colour = "black"
  ) +
  theme_bw() +
  labs(title = "pattern = 'none'")
```

## Pattern 'text'

The `text` pattern tiles the area with repeated text characters or expressions.  
The character is controlled by `pattern_shape`.

For more information see
[`help("grid.pattern_text", package = "gridpattern")`](https://trevorldavis.com/R/gridpattern/dev/reference/grid.pattern_text.html).

```{r text-example, fig.cap="", fig.alt="Bar chart using the text pattern with different characters"}
ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(
    aes(fill = trt, pattern_color = trt, pattern_shape = trt),
    pattern = "text",
    pattern_size = 12,
    pattern_spacing = 0.08,
    pattern_grid = "hex",
    pattern_angle = 0,
    colour = "black"
  ) +
  scale_fill_manual(values = c("black", "white", "gold")) +
  scale_pattern_color_manual(values = c("gold", "red", "black")) +
  scale_pattern_shape_manual(values = c("★", "♥", "♣")) +
  theme_bw() +
  labs(title = "pattern = 'text'")
```