Tenter d'ajouter des étiquettes de données à un barplot, en utilisant ggplot me donne l'erreur suivante:
Error: geom_text requires the following missing aesthetics: x
Mes exemples de données sont les suivants:
| Team | Goals |
|------------ |------- |
| Manchester | 26 |
| Liverpool | 25 |
| Man City | 30 |
| Chelsea | 32 |
| Arsenal | 11 |
| West Ham | 22 |
| Stoke | 23 |
Et voici le code que j'utilise pour créer un barplot.
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
Même lorsque j'ajoute x = Team
Dans g + geom_text(aes(x = Team, y=Goals, label=Goals))
, cela me donne toujours la même erreur.
Qu'est-ce que je fais mal ici?
Regrouper le tout à partir du commentaire et ajouter la réorganisation des équipes par nombre d'objectifs, le code ci-dessous
# 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
crée ce graphique:
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")