我正在尝试使用 facet_wrap 在 ggplot2 中制作多边形地图。我的变量“作物”中有两个因子水平(大豆、玉米)但是,我得到了三个地块:大豆、玉米和一个具有 NA 值的地块。此外,前两个方面不显示 NA 值-
这是我制作地图的代码:
ggplot(study_area.map, aes(x=long, y=lat, group=group)) +
geom_polygon(aes(fill=brazil_loss_new2)) +
geom_path(colour="black") +
facet_wrap(~crop, ncol=2, drop=T) +
scale_fill_brewer(na.value="grey", palette="Blues",
name="Average production lossess\n per municipality",
breaks = levels(study_area.map$brazil_loss_new2),
labels = levels(study_area.map$brazil_loss_new2)) +
theme() +
coord_fixed()
这就是我得到的:
如果我使用 na.omit 我会得到下图(更好,但前两个图中仍然缺少 NA 值)
包括每个变量和市政当局的行,无论感兴趣的变量是否为 NA,最终解决了问题。这就是我要找的东西:
您可以在调用 ggplot 函数时删除 NA。删除核心数据函数中的 NA。这样它就不会绘制它们
ggplot(data = study_area.map[!(is.na(study_area.map[$brazil_loss_new2)),], aes(x=long, y=lat, group=group))+
geom_polygon(aes(fill=brazil_loss_new2))+
geom_path(colour="black")+ facet_wrap(~crop, ncol=2, drop=T)+ scale_fill_brewer(na.value="grey", palette="Blues", name="Average production lossess\n per municipality", breaks =levels(study_area.map$brazil_loss_new2), labels=levels(study_area.map$brazil_loss_new2))+
theme()+
coord_fixed()
在数据通话中包括
na.omit()
是否能让您得到想要的东西?
ggplot(na.omit(study_area.map), aes(x=long, y=lat, group=group)) +
geom_polygon(aes(fill=brazil_loss_new2)) +
geom_path(colour="black") +
facet_wrap(~crop, ncol=2, drop=T) +
scale_fill_brewer(na.value="grey", palette="Blues",
name="Average production lossess\n per municipality",
breaks = levels(study_area.map$brazil_loss_new2),
labels = levels(study_area.map$brazil_loss_new2)) +
theme() +
coord_fixed()
我在运行以下代码时遇到了同样的问题,只需添加
na.omit()
对我有用:
ggplot(data = mma_male_df) +
geom_bar(mapping = aes(x = cut(date, "12 months"), fill=method_new)) +
facet_wrap(~division, ncol = 4, drop = T) +
scale_x_discrete(labels = function(x) format(as.Date(x), "%Y")) +
theme(axis.text.x = element_text(angle = 45)) +
labs(title = "Men's MMA Fights by Year and Outcome", x = "Year", y = "Number of Fights", fill = "Fight Outcome")```
----------
ggplot(data = na.omit(mma_male_df)) +
geom_bar(mapping = aes(x = cut(date, "12 months"), fill=method_new)) +
facet_wrap(~division, ncol = 4, drop = T) +
scale_x_discrete(labels = function(x) format(as.Date(x), "%Y")) +
theme(axis.text.x = element_text(angle = 45)) +
labs(title = "Men's MMA Fights by Year and Outcome", x = "Year", y = "Number of Fights", fill = "Fight Outcome")