问调整ggpot2 scale_fill_brewer的灰色值(palette= "Greys")
EN

Stack Overflow用户

提问于 2021-02-17 10:11:31

回答 1查看 129关注 0票数 0

我用下面的数据和代码创建了一个图。我想改变使用的灰色值的酒吧，使他们都一步黑暗。然而，我在?scale_fill_brewer中没有看到任何东西，这将允许我这样做。有什么简单的办法来解决这个问题吗？

数据：

counts_truth  <- structure(list(x_label = c("Truth ECOST = 0.52", "Truth ECOST = 0.39", 
"Truth ECOST = 0.26", "Truth ECOST = 0.13", "Truth ECOST = 0.00", 
"Truth ECOST = 0.52", "Truth ECOST = 0.39", "Truth ECOST = 0.26", 
"Truth ECOST = 0.13", "Truth ECOST = 0.00"), treatment = structure(c(1L, 
1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L), .Label = c("control", "treatment"
), class = "factor", scores = structure(c(control = 0.424793388429752, 
treatment = 0.498594189315839), .Dim = 2L, .Dimnames = list(c("control", 
"treatment")))), percentage = c(0.163636363636364, 0.272727272727273, 
0.427272727272727, 0.6, 0.781818181818182, 0.319587628865979, 
0.360824742268041, 0.474226804123711, 0.701030927835051, 0.88659793814433
), remove = c("Truth ECOST ", "Truth ECOST ", "Truth ECOST ", 
"Truth ECOST ", "Truth ECOST ", "Truth ECOST ", "Truth ECOST ", 
"Truth ECOST ", "Truth ECOST ", "Truth ECOST "), ECOST = c("0.52", 
"0.39", "0.26", "0.13", "0.00", "0.52", "0.39", "0.26", "0.13", 
"0.00")), row.names = c(NA, -10L), class = c("data.table", "data.frame"
))

library(ggplot2)
counts_truth %>% 
ggplot(aes(x = ECOST, y = percentage, fill = treatment, label=sprintf("%0.2f", round(percentage, digits = 2)))) + 
geom_col(position = 'dodge') + 
geom_text(position = position_dodge(width = .9),    # move to center of bars
          vjust = -0.5,    # nudge above top of bar
          size = 5) +           
scale_fill_brewer(palette = "Greys") + 
theme_bw()

ggplot2

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-02-17 17:39:08

一个快速的解决方案是使用scale_fill_grey来调整灰色的连续体，使其稍微变暗。根据您的数据集，下面的内容将使情节变暗。

根据需要调整start和end参数。它们介于0(黑色)到1(白色)之间。

counts_truth %>% 
    ggplot(aes(x = ECOST, y = percentage, fill = treatment, label=sprintf("%0.2f", round(percentage, digits = 2)))) + 
    geom_col(position = 'dodge') + 
    geom_text(position = position_dodge(width = .9),    # move to center of bars
              vjust = -0.5,    # nudge above top of bar
              size = 5) +           
    scale_fill_grey(start = 0.8, end = 0.5) +
    theme_bw()

票数 1

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原文链接：

https://stackoverflow.com/questions/66239814

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