我有一个包含许多零元素的矩阵。列名称在水平轴上标记。我想明确地显示非零元素作为每列垂直线的偏差。
那么如何使用ggplot2构造一个像示例这样的图形呢?
可以生成如下示例数据:
set.seed(2018)
N <- 5
p <- 40
dat <- matrix(0.0, nrow=p, ncol=N)
dat[2:7, 1] <- 4*rnorm(6)
dat[4:12, 2] <- 2.6*rnorm(9)
dat[25:33, 3] <- 2.1*rnorm(9)
dat[19:26, 4] <- 3.3*rnorm(8)
dat[33:38, 5] <- 2.9*rnorm(6)
colnames(dat) <- letters[1:5]
print(dat)
答案 0 :(得分:4)
这是将. search renvars, historical
Search of official help files, FAQs, Examples, SJs, and STBs
SJ-5-4 dm88_1 . . . . . . . . . . . . . . . . . Software update for renvars
(help renvars if installed) . . . . . . . . . N. J. Cox and J. Weesie
Q4/05 SJ 5(4):607
trimend() option added and help file updated
STB-60 dm88 . . . . . . . . Renaming variables, multiply and systematically
(help renvars if installed) . . . . . . . . . N. J. Cox and J. Weesie
3/01 pp.4--6; STB Reprints Vol 10, pp.41--44
renames variables by changing prefixes, postfixes, substrings,
or as specified by a user supplied rule
和facet_wrap
与geom_col
一起使用的另一种选择。
theme_minimal
要进一步增加与原始帖子中情节的美学相似性,我们可以
library(tidyverse)
dat %>%
as.data.frame() %>%
rowid_to_column("row") %>%
gather(key, value, -row) %>%
ggplot(aes(x = row, y = value, fill = key)) +
geom_col() +
facet_wrap(~ key, ncol = ncol(dat)) +
coord_flip() +
theme_minimal()
图例,然后
fill
答案 1 :(得分:3)
如果您可以提供一些示例数据,将会更加容易。因此,我需要创建它们,并且不能保证这会满足您的目的。
set.seed(123)
# creating some random sample data
df <- data.frame(id = rep(1:100, each = 3),
x = rnorm(300),
group = rep(letters[1:3], each = 100),
bias = sample(0:1, 300, replace = T, prob = c(0.7, 0.3)))
# introducing bias
df$bias <- df$bias*rnorm(nrow(df))
# calculate lower/upper bias for errorbar
df$biaslow <- apply(data.frame(df$bias), 1, function(x){min(0, x)})
df$biasupp <- apply(data.frame(df$bias), 1, function(x){max(0, x)})
然后,我使用了一种技巧,能够以足够的距离打印组,以使它们不会重叠。基于第I组,偏移偏差变量以及上下偏差都发生了变化。
# I want to print groups in sufficient distance
df$bias <- as.numeric(df$group)*5 + df$bias
df$biaslow <- as.numeric(df$group)*5 + df$biaslow
df$biasupp <- as.numeric(df$group)*5 + df$biasupp
现在可以绘制它:
library(ggplot2)
ggplot(df, aes(x = x, col = group)) +
geom_errorbar(aes(ymin = biaslow, ymax = biasupp), width = 0) +
coord_flip() +
geom_hline(aes(yintercept = 5, col = "a")) +
geom_hline(aes(yintercept = 10, col = "b")) +
geom_hline(aes(yintercept = 15, col = "c")) +
theme(legend.position = "none") +
scale_y_continuous(breaks = c(5, 10, 15), labels = letters[1:3])
要加入特殊设计,您可以添加
theme_bw() +
theme(axis.text.y = element_blank(),
axis.ticks.y = element_blank(),
axis.title.y = element_blank(),
axis.text.x = element_text(angle = 45, vjust = 0.5, hjust = 1),
panel.grid.major = element_blank(),
panel.grid.minor = element_blank())
到您的情节。
要合并多条水平线,可以创建不同的数据集:
df2 <- data.frame(int = unique(as.numeric(df$group)*5),
gr = levels(df$group))
并使用
geom_hline(data = df2, aes(yintercept = int, col = gr))
代替每个组级别的复制/粘贴geom_hline
。