我如何操纵facet_grid图的条形文字？ [英] How can I manipulate the strip text of facet_grid plots?

问题描述

我想知道如何在小平面图上操作条形文字的大小。我的问题
类似于关于情节标题的问题，但我特别关注
操作的不是情节标题，而是出现在方面标题（strip_h）中的文本。

作为示例，请考虑mpg数据集。

 库（ggplot2）
 qplot（hwy，cty，data = mpg）+ facet_grid（。〜制造商）
  

由此产生的输出会产生一些不符合条带的分面标题。

我在想一定有办法使用 grid 来处理strip文本。但是我仍然是新手，并且无法从网格的附录中找到哈德利的书如何准确地做到这一点。此外，我害怕如果我做错了，它会打破我的洗钱
机器，因为我相信所有的技术都通过部队联系在一起： - （

提前感谢。

解决方案

您可以修改 strip.text.x （或 strip.text.y ）使用 theme_text（），例如

  qplot（hwy，cty，data = mpg）+ 
 facet_grid（。〜制造商）+ 
 opts（strip.text.x = theme_text （size = 8，color =red，angle = 90））
  

for ggplot2 version> 0.9.1

  qplot（hwy，cty，data = mpg）+ 
 facet_grid（。〜manufacturer）+ 
 theme（strip.text.x = element_text（size = 8，color =red，angle = 90））
  

I'm wondering how I can manipulate the size of strip text in facetted plots. My question is similar to a question on plot titles, but I'm specifically concerned with manipulating not the plot title but the text that appears in facet titles (strip_h).

As an example, consider the mpg dataset.

    library(ggplot2) 
    qplot(hwy, cty, data = mpg) + facet_grid( . ~ manufacturer)

The resulting output produces some facet titles that don't fit in the strip.

I'm thinking there must be a way to use grid to deal with the strip text. But I'm still a novice and wasn't sure from the grid appendix in Hadley's book how, precisely, to do it. Also, I was afraid if I did it wrong it would break my washing machine, since I believe all technology is connected through The Force :-(

Many thanks in advance.

解决方案

You can modify strip.text.x (or strip.text.y) using theme_text(), for instance

qplot(hwy, cty, data = mpg) + 
      facet_grid(. ~ manufacturer) + 
      opts(strip.text.x = theme_text(size = 8, colour = "red", angle = 90))

Update: for ggplot2 version > 0.9.1

qplot(hwy, cty, data = mpg) + 
      facet_grid(. ~ manufacturer) + 
      theme(strip.text.x = element_text(size = 8, colour = "red", angle = 90))

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