我用ggplot（）做了一个Map，我想给Map添加标签，或者是一个交互式的东西，这样当我悬停在州区域上时，它会给我它的名字。我在Stackoverflow中寻找提示，但是它不起作用。
你有什么建议吗？
How my data looks like

scaling_map <-ggplot(pop_usa, aes(long,lat)) + 
geom_polygon(aes(group= group, fill = estimated_pop_2020) ,color="black") +
theme(axis.title.x=element_blank(), axis.text.x=element_blank(), axis.ticks.x=element_blank(), axis.title.y=element_blank(), 
axis.text.y=element_blank(), axis.ticks.y=element_blank(),plot.title = element_text(face = "bold",hjust = 0.5)) +
  ggtitle("Estimated population by state") +
  scale_fill_gradient(name ="Estimated population (log10)" ,low = "#FFFFCC" , high = "#336600") +
  geom_sf_text(aes(label = state))
  coord_map()

下面是我运行时得到的消息：

Error in `geom_sf_text()`:
! Problem while computing stat.
ℹ Error occurred in the 2nd layer.
Caused by error in `compute_layer()`:
! `stat_sf_coordinates()` requires the following missing aesthetics: geometry
Run `rlang::last_error()` to see where the error occurred.