使用ggplot2笔画控制栏边框（颜色）厚度 [英] Control bar border (color) thickness with ggplot2 stroke

问题描述

是否可以使用与 ggplot2 2.0 引入的笔画参数来调整条纹周围边框的粗细？如果没有，是否有办法控制沿边界厚度线条的边界厚度？

在评论后编辑
好​​的，多亏了MLavoie的评论，它非常简单。这里是我结束了的代码，并且，不，实际上并没有使用这个情节，而是教导有关 ggplot 及其功能。

  ggplot（df，aes（x = factor，y = value，color = factor2））+ 
 scale_color_manual（values = c（darkgreen ，slateblue4））+ 
 geom_bar（stat =identity，aes（fill =transparent，size = ifelse（factor2 ==A，2，1）））+ 
 guides （fill = FALSE）+ 
 guides（size = FALSE）+ 
 guides（color = FALSE）
  

解决方案

由OP，我将只是重新评论我的评论作为答案。

你只需要在你的 size 中设置 geom_bar（）表达式：

  geom_bar（stat =identity， aes（fill =transpa租金，size = ifelse（factor2 ==A，2，1）），size = 2）
  

Is it possible to use the stroke argument introduced with ggplot2 2.0 to adjust the thickness of borders around bars? If not, is there a way to control bar-border thickness along the lines of point-border thickness? Stroke applies to borders around certain shapes -- see the second answer

A very modest MWE, showing fill only:

factor <- c("One", "Two", "Three", "Four")
value <- c(1, 2, 3, 4)
factor2 <- c("A", "B", "A", "B")

df <- data.frame(factor = factor(factor, levels = factor),
                 value = value, factor2 = factor2) 

ggplot(df, aes(x = factor, y = value, color = factor2)) +
  geom_bar(stat = "identity")

EDIT after COMMENT OK, thanks to MLavoie's comment, it was so simple. Here is the code I have ended with, and, no, I am not actually using this plot other than to teach about ggplot and its capabilities.

ggplot(df, aes(x = factor, y = value, color = factor2)) +
  scale_color_manual(values = c("darkgreen", "slateblue4")) +
  geom_bar(stat = "identity", aes(fill = "transparent", size = ifelse(factor2 == "A", 2, 1))) +
  guides(fill = FALSE) +
  guides(size = FALSE) +
  guides(color = FALSE)

解决方案

well as I suggested by the OP, I will just recopy my comment as an answer.

you just need to set size in your geom_bar() expression:

geom_bar(stat = "identity", aes(fill = "transparent", size = ifelse(factor2 == "A", 2, 1)), size=2)

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