ggplot position_dodge(preserve ="single")的未使用参数错误 [英] Unused argument error with ggplot position_dodge(preserve = "single")

问题描述

尝试在此处中使用的position_dodge()保留参数时遇到错误ggplot文档中的a>.

I am getting error when trying to use the preserve argument to position_dodge() described here in the ggplot documentation.

ggplot(
       mtcars,
       aes(
           factor(cyl),
           fill = factor(vs)
           )
        ) +
 geom_bar(position = position_dodge(preserve = "single"))

position_dodge(preserve ="single")中的错误:未使用的参数(preserve ="single")

Error in position_dodge(preserve = "single") : unused argument (preserve = "single")

我正在使用R版本3.4.1和ggplot2版本2.2.1

I am using R version 3.4.1 and ggplot2 version 2.2.1

有什么建议吗?谢谢

推荐答案

在 ggplot2 的开发版本中似乎存在 preserve 自变量在函数 position_dodge2()中，而不是普通的 position_dodge()函数中.此链接显示了我如何找到该信息的: https://github.com/tidyverse/ggplot2/search?utf8=%E2%9C%93&q=preserve&type=

It looks like the preserve argument is present in the development version of ggplot2 but for the moment only in the function position_dodge2() and not in the normal position_dodge() function. This link shows how I found that information: https://github.com/tidyverse/ggplot2/search?utf8=%E2%9C%93&q=preserve&type=

我不清楚为什么在线文档( http://ggplot2.tidyverse.org/reference/index.html )显示 preserve 作为当前可用的功能.

It's unclear to me why the online documentation (http://ggplot2.tidyverse.org/reference/index.html) shows preserve as a current, usable feature.

如果您确实要使用此功能，则可以尝试安装开发版本.我不知道那是否是个好主意！

If you really want to use this function you could try installing the development version. I have no idea if that would be a good idea or not!

install.packages("devtools")
library(devtools)
devtools::install_github("tidyverse/ggplot2")

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