ggpipe's Introduction

ggpipe

ggplot with the pipe

This package wraps most ggplot2 functions so they work with the pipe %>% with minimal overhead (if noticeable).

Installation

You can install ggpipe from github with:

# install.packages("devtools")
devtools::install_github("zeehio/ggpipe")

Example

# as ggpipe wraps ggplot2 functions, do not use library(ggplot2) in your scripts
library(ggpipe)
ggplot(mtcars) %>% 
  geom_point(aes(x = mpg, y = disp))

This package provides an additional unggplot() function to get back the data from the plot, so multiple plots could be generated on a single pipe:

iris_sepal_png <- "README-iris_sepal.png"
iris_petal_png <- "README-iris_petal.png"

iris %>%
  ggplot() %>%
  geom_point(aes(x = Sepal.Length, y = Sepal.Width, color = Species)) %>%
  ggsave(iris_sepal_png, height = 3, width = 5, dpi = 72) %>%
  unggplot() %>%
  ggplot() %>%
  geom_point(aes(x = Petal.Length, y = Petal.Width, color = Species)) %>%
  ggsave(iris_petal_png, height = 3, width = 5, dpi = 72) %>%
  unggplot() %>%
  head()
#>   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> 1          5.1         3.5          1.4         0.2  setosa
#> 2          4.9         3.0          1.4         0.2  setosa
#> 3          4.7         3.2          1.3         0.2  setosa
#> 4          4.6         3.1          1.5         0.2  setosa
#> 5          5.0         3.6          1.4         0.2  setosa
#> 6          5.4         3.9          1.7         0.4  setosa

Plot the two figures:

knitr::include_graphics(iris_sepal_png)

knitr::include_graphics(iris_petal_png)

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ggpipe's Issues

Review test-stat* and test-theme

I added all the ggplot tests from 2.2.1
I reviewed the tests, removing those testing ggplot internals
I simplified the tests, testing only for equality between ggplot objects generated by ggpipe and ggplot (the plot building phase is not touched by ggpipe)

The last step (simplify the tests) was not done for the test-stat* and test-theme* tests, so I leave that for the future, before a CRAN release.

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