R ggplot:添加颜色美学更改堆栈顺序
发现一个奇怪的边缘案例 假设您想要一个带有标记线段的堆叠条形图(撇开这种图是否为最佳数据viz) 堆栈顺序已更改,这是意外的,我不确定如何修复此问题R ggplot:添加颜色美学更改堆栈顺序,r,ggplot2,R,Ggplot2,发现一个奇怪的边缘案例 假设您想要一个带有标记线段的堆叠条形图(撇开这种图是否为最佳数据viz) 堆栈顺序已更改,这是意外的,我不确定如何修复此问题 > sessionInfo() R version 3.5.0 (2018-04-23) Platform: x86_64-apple-darwin15.6.0 (64-bit) Running under: macOS High Sierra 10.13.4 Matrix products: default BLAS: /System/
> sessionInfo()
R version 3.5.0 (2018-04-23)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.4
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] ggplot2_3.0.0.9000
loaded via a namespace (and not attached):
[1] Rcpp_0.12.16 digest_0.6.15 withr_2.1.2 dplyr_0.7.4 assertthat_0.2.0 grid_3.5.0 plyr_1.8.4 R6_2.2.2
[9] gtable_0.2.0 magrittr_1.5 scales_0.5.0 pillar_1.2.2 rlang_0.2.1 lazyeval_0.2.1 bindrcpp_0.2.2 labeling_0.3
[17] tools_3.5.0 glue_1.2.0 munsell_0.4.3 yaml_2.1.19 compiler_3.5.0 pkgconfig_2.0.1 colorspace_1.3-2 bindr_0.1.1
[25] tibble_1.4.2
啊,好吧,这里有一个答案+变通一下。这是因为
aes(color=…)
调用是在geom_text
级别调用的,而不是在最初的ggplot调用中调用的
统一到单个aes
调用将导致geom_col和geom_text遵循相同的顺序,但需要一些技巧才能使颜色美学仅在文本层显示:
ggplot(dat,
aes(x, y, fill=category, label=paste0(category, ': ', y),
color = category == 'a')) +
# if you call geom_col just like this, you'll get colored borders
# geom_col() +
# so you have to blank out the color aesthetic for this geom
geom_col(color=NA) +
geom_text(position = position_stack(vjust=.5)) +
scale_color_manual(values = c("black", 'white'))
在我的脑海中,
geom_text(aes(color=category),position=position\u stack(vjust=.5))+scale\u color_manual(values=c(a=“black”,b=“black”,c=“white”)
,尽管你可能会反对它以你不喜欢的方式组合了图例……你“normal”示例中的文本标签是不正确的。尝试在ggplot调用之外创建标签:mutate(cat_label=paste0(category,“:”,y))
,然后将label=cat_label
放在aes()
@joran:主要是我对这种行为感到惊讶,似乎它可能是bug?你同意这是出乎意料的吗,如上所述?这对我来说似乎出乎意料…但我试图确定我是否遗漏了一些东西-比如它如何改变堆栈顺序?它似乎是根据您的expressionthx的真实/错误结果进行分组的-如果没有好的答案,我会在几天后将其作为一个问题发布在ggplot github上;如果您感兴趣,请随时投票支持可见性
> sessionInfo()
R version 3.5.0 (2018-04-23)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS High Sierra 10.13.4
Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] ggplot2_3.0.0.9000
loaded via a namespace (and not attached):
[1] Rcpp_0.12.16 digest_0.6.15 withr_2.1.2 dplyr_0.7.4 assertthat_0.2.0 grid_3.5.0 plyr_1.8.4 R6_2.2.2
[9] gtable_0.2.0 magrittr_1.5 scales_0.5.0 pillar_1.2.2 rlang_0.2.1 lazyeval_0.2.1 bindrcpp_0.2.2 labeling_0.3
[17] tools_3.5.0 glue_1.2.0 munsell_0.4.3 yaml_2.1.19 compiler_3.5.0 pkgconfig_2.0.1 colorspace_1.3-2 bindr_0.1.1
[25] tibble_1.4.2
ggplot(dat,
aes(x, y, fill=category, label=paste0(category, ': ', y),
color = category == 'a')) +
# if you call geom_col just like this, you'll get colored borders
# geom_col() +
# so you have to blank out the color aesthetic for this geom
geom_col(color=NA) +
geom_text(position = position_stack(vjust=.5)) +
scale_color_manual(values = c("black", 'white'))