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https://github.com/schochastics/roughsf

R package to draw sketchy, hand-drawn-like maps with roughjs
https://github.com/schochastics/roughsf

Last synced: 19 days ago
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R package to draw sketchy, hand-drawn-like maps with roughjs

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README

        

---
output: github_document
---

```{r, include = FALSE}
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>",
fig.path = "man/figures/README-",
out.width = "100%"
)
```

# roughsf

[![R-CMD-check](https://github.com/schochastics/roughsf/workflows/R-CMD-check/badge.svg)](https://github.com/schochastics/roughsf/actions)
[![CRAN status](https://www.r-pkg.org/badges/version/roughsf)](https://CRAN.R-project.org/package=roughsf)
[![CRAN Downloads](https://cranlogs.r-pkg.org/badges/roughsf)](https://CRAN.R-project.org/package=roughsf)

Using the java script library [rough.js](https://roughjs.com/) to draw sketchy, hand-drawn-like maps
(*Checkout [ggrough](https://xvrdm.github.io/ggrough/) for turning general ggplot objects into sketchy drawings and
[roughnet](https://github.com/schochastics/roughnet) for networks*)

![](man/figures/example.png)

## Installation

```{r cran, eval=FALSE}
install.packages("roughsf")
```

You can install the developers version of roughsf with:

```{r eval=FALSE}
# install.packages("remotes")
remotes::install_github("schochastics/roughsf")
```

## Usage

`roughsf()` takes a list of sf objects as input. The layers are drawn in order as they appear in the list.
MULTI* geometries are not supported and should be casted beforehand. Aesthetics need to be specified explicitly as
columns in the sf objects.

The following attributes are supported for POLYGONS:

* *fill* fill color
* *color* stroke color
* *stroke* stroke size
* *fillstyle* one of "hachure", "solid", "zigzag", "cross-hatch", "dots", "dashed", "zigzag-line"
* *fillweight* thickness of fillstyle (between 0 and 1)
* *hachureangle* angle of hachure lines
* *hachuregap* gap between two hachure lines

The following attributes are supported for LINESTRINGS:

* *color* stroke color
* *stroke* stroke size

The following attributes are supported for POINTS:

* *color* color of point
* *size* size of point
* *label* label to be added (optional)
* *label_pos* position of label relative to point: (c)enter, (n)orth, (e)ast, (s)outh, (w)est (optional)

Default values are used if one of the attributes is not found.

**Values need to be specified explicitly and cannot be inferred from other columns** (This needs to be done in a preparatory step)

```{r eval=FALSE}
library(sf)
ger <- rnaturalearth::ne_countries(scale = "medium", country = "Germany", returnclass = "sf")
ger <- st_cast(ger, "POLYGON")
ger$fill <- "#CD2626"
ger$stroke <- 2
ger$fillweight <- 0.5

# MULTIPOLYGON (and also MULTILINESTRING) are not supported
ger <- st_cast(ger, "POLYGON")

cities <- data.frame(name = c("Berlin", "Munich", "Hamburg", "Cologne"))
cities$geometry <- st_sfc(
st_point(c(13.4, 52.5200)), st_point(c(11.582, 48.1351)),
st_point(c(9.9937, 53.5511)), st_point(c(6.9603, 50.9375))
)
cities <- st_sf(cities)
st_crs(cities) <- "+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0"
cities$size <- 15
cities$color <- "#000000"
cities$label <- cities$name
cities$label_pos <- "e"

roughsf::roughsf(list(ger, cities),
title = "Sketchy Map of Germany", caption = "drawn by @schochastics",
title_font = "48px Pristina", font = "30px Pristina", caption_font = "30px Pristina",
roughness = 1, bowing = 1, simplification = 1,
width = 800, height = 1000,
)
```

![](man/figures/germany.png)

Plots can be saved as png with the `save_roughsf()` function.

# More Examples

![](man/figures/africa.png)

![](man/figures/pop_dens_ger.png)