尝试使用ggplot将数据标签添加到条形图时，出现以下错误:
Error: geom_text requires the following missing aesthetics: x
我的样本数据如下:
| Team | Goals |
|------------ |------- |
| Manchester | 26 |
| Liverpool | 25 |
| Man City | 30 |
| Chelsea | 32 |
| Arsenal | 11 |
| West Ham | 22 |
| Stoke | 23 |
这是我用来创建barplot的代码。
g<- ggplot(data = scores) +
geom_bar(mapping = aes(x=Team, y=Goals, color = Team, fill = Team),
stat = "identity")
g <- g + ggtitle("Goals per Team") + ylab("Number of Goals")
g <- g + theme_bw() + theme(legend.position="none") + theme(plot.title = element_text(hjust = 0.5))
g + geom_text(aes(y=Goals, label=Goals))
g
即使我在
x = Team中添加g + geom_text(aes(x = Team, y=Goals, label=Goals))，它仍然会给我同样的错误。我在这里做错了什么？
最佳答案
从评论中将所有内容放在一起，并按目标数添加团队重新编排，以下代码
# add on: reorder teams by number of goals
scores$Team <- with(scores, reorder(Team, -Goals))
g <- ggplot(scores,
# keep all aesthetics in one place
aes(x = Team, y = Goals, color = Team, fill = Team, label = Goals)) +
# replacement of geom_bar(stat = "identity")
geom_col() +
# avoid overlap of text and bar to make text visible as bar and text have the same colour
geom_text(nudge_y = 1) +
# alternatively, print text inside of bar in discriminable colour
# geom_text(nudge_y = -1, color = "black") +
ggtitle("Goals per Team") +
xlab("Team") + ylab("Number of Goals") +
theme_bw() + theme(legend.position = "none") +
theme(plot.title = element_text(hjust = 0.5))
g
数据
scores <- structure(list(Team = structure(c(3L, 4L, 2L, 1L, 7L, 6L, 5L), .Label = c("Chelsea",
"Man City", "Manchester", "Liverpool", "Stoke", "West Ham", "Arsenal"
), class = "factor", scores = structure(c(-11, -32, -25, -30,
-26, -23, -22), .Dim = 7L, .Dimnames = list(c("Arsenal", "Chelsea",
"Liverpool", "Man City", "Manchester", "Stoke", "West Ham")))),
Goals = c(26L, 25L, 30L, 32L, 11L, 22L, 23L)), .Names = c("Team",
"Goals"), row.names = c(NA, -7L), class = "data.frame")