[英]Sequential Colour Palettes Across Facets in ggplot2
我正在构建一个仪表板,其中包括按访问者数量排列的前 10 个位置的棒棒糖图表,按年份分面。 这是我使用虚拟数据构建的大致相似的 plot:
为了按每个方面的访问者总数重新排序位置, 我使用了由 Tyler Rinker 创建的 reorder_within() 和 scale_x_reorder() 。 对于顺序调色板,我使用了 RColorBrewer 和 scale_color_distiller。
关于酒吧的 colors,我想更改三件事,但我不确定如何做。
下面带有一些虚拟数据的可重现示例:
library(tidyverse)
library(RColorBrewer)
#facet reorder code - by Tyler Rinker
reorder_within <-
function(x,
by,
within,
fun = mean,
sep = "___",
...) {
new_x <- paste(x, within, sep = sep)
stats::reorder(new_x, by, FUN = fun)
}
scale_x_reordered <- function(..., sep = "___") {
reg <- paste0(sep, ".+$")
ggplot2::scale_x_discrete(
labels = function(x)
gsub(reg, "", x),
...
)
}
dummy <- data.frame(
Year = rep(c(2019, 2020, 2021), c(10)),
Destination = c("loc_4322", "loc_43267", "loc_6786", "loc_43294", "loc_45566",
"loc_1234", "loc_367", "loc_14765", "loc_49865", "loc_90765",
"loc_4332", "loc_367", "loc_2112", "loc_596111", "loc_54980",
"loc_539", "loc_5699", "loc_1965", "loc_6387", "loc_213",
"loc_5245", "loc_4787", "loc_34098", "loc_67609", "loc_50954",
"loc_54421", "loc_548901", "loc_23245", "loc_4322", "loc_0986"),
Visitor_numbers = c(102234, 234984, 39546, 108943, 430985, 243056, 342890,
253980, 129803, 134954, 21954, 128904, 223242, 223242,
223242, 23242, 243980, 134324, 542323, 12545, 905334,
123434, 123434, 569085, 5085, 235463, 209384, 230923,
243089, 120923)
)
destinations <- dummy %>%
ggplot() +
(aes(
x = reorder_within(Destination, -Visitor_numbers, Year),
y = Visitor_numbers,
color = Visitor_numbers
)) +
geom_point(size = 4) +
geom_segment(
aes(
x = reorder_within(Destination, -Visitor_numbers, Year),
xend = reorder_within(Destination, -Visitor_numbers, Year),
y = 0,
yend = Visitor_numbers
),
size = 2
) +
scale_x_reordered() +
scale_color_distiller(type = "seq", palette = "Oranges", direction = 1) +
facet_wrap(~ Year,
dir = "v",
scales = "free",
ncol = 1) +
coord_flip()
destinations
任何帮助将不胜感激。
我建议在一年内按等级或比例值着色。 以下是两种可能:
destinations <- dummy %>%
group_by(Year) %>%
mutate(Visitor_numbers_rank = min_rank(Visitor_numbers)) %>%
#mutate(Visitor_numbers_rank = Visitor_numbers/max(Visitor_numbers)) %>%
ungroup() %>%
ggplot(aes(
x = reorder_within(Destination, -Visitor_numbers, Year),
y = Visitor_numbers,
color = Visitor_numbers_rank
)) +
guides(color = "none") +
...
要修改调色板以使最亮的值变暗,您可以扩展颜色限制以包含小于任何数据的值,从而有效地将 colors 移动到更远的范围内。 我知道等级 go 不会低于 1,因此色阶从 -5 开始会使一切都发生变化。
scale_color_distiller(type = "seq", palette = "Oranges", direction = 1,
limits = c(-5, 10)) +
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.