year <- c(2000:2014)
group <- c("A","A","A","A","A","A","A","A","A","A","A","A","A","A","A",
"B","B","B","B","B","B","B","B","B","B","B","B","B","B","B",
"C","C","C","C","C","C","C","C","C","C","C","C","C","C","C")
value <- sample(1:5, 45, replace=TRUE)
df <- data.frame(year,group,value)
df$value[df$value==1] <- NA
year group value
1 2000 A NA
2 2001 A 2
3 2002 A 2
...
11 2010 A 2
12 2011 A 3
13 2012 A 5
14 2013 A NA
15 2014 A 3
16 2000 B 2
17 2001 B 3
...
26 2010 B NA
27 2011 B 5
28 2012 B 4
29 2013 B 3
30 2014 B 5
31 2000 C 5
32 2001 C 4
33 2002 C 3
34 2003 C 4
...
44 2013 C 5
45 2014 C 3
以上是我的问题的示例数据框。 每个组(A,B或C)的价值从2000年到2014年,但在某些年份,某些组的价值可能会丢失。
我想绘制的图表如下:
x轴是年
y轴是基团(即A,B&amp; C应该在y-lab上显示)
条形或线条代表每个组的价值可用性
如果值为NA,则条形码不会在该时间点显示。 如果可能的话,首选ggplot2。
有人可以帮忙吗? 谢谢。
我认为我的描述令人困惑。我期待下面的图表,但x轴将是年份。条形图或折线表示全年特定组的价值可用性。
在A组的样本数据框中,我们有
2012 A 5
2013 A NA
2014 A 3
然后在2013年的A组应该没什么,然后在2014年A组的点上会出现一个点。
答案 0 :(得分:1)
您可以使用geom_errorbar,没有范围(geom_errorbarh表示水平)。然后只是complete.cases(或!is.na(df$value)
)
library(ggplot2)
set.seed(10)
year <- c(2000:2014)
group <- c("A","A","A","A","A","A","A","A","A","A","A","A","A","A","A",
"B","B","B","B","B","B","B","B","B","B","B","B","B","B","B",
"C","C","C","C","C","C","C","C","C","C","C","C","C","C","C")
value <- sample(1:5, 45, replace=TRUE)
df <- data.frame(year,group,value)
df$value[df$value==1] <- NA
no_na_df <- df[complete.cases(df), ]
ggplot(no_na_df, aes(x=year, y = group)) +
geom_errorbarh(aes(xmax = year, xmin = year), size = 2)
修改强> 为了得到一个有价值的酒吧,你可以使用这种略显缺乏吸引力的方法。有必要对组数据进行数值表示,以给条形宽度。此后,我们可以使比例再次代表变量。
df$group_n <- as.numeric(df$group)
no_na_df <- df[complete.cases(df), ]
ggplot(no_na_df, aes(xmin=year-0.5, xmax=year+0.5, y = group_n)) +
geom_rect(aes(ymin = group_n-0.1, ymax = group_n+0.1)) +
scale_y_discrete(limits = levels(df$group))