`[.data.frame`（attr ,, region）出错：选择了未定义的列（R）

Question

Quero usar o fortify没有seguintecódigo例子：

Brasil <- fortify(BRmap, region = "BRmap@data$GID_2") %>%  
mutate(id = as.integer(id)) %>%
full_join(BRmap@data, by =c("id" = "BRmap@data$GID_2")) %>%
select(c(id, long, lat, order, hole, piece, group, NAME_2))

BRmapéumfileshape retirado do site https://gadm.org

Answer 1

也许试试这个？

• 请勿使用全名“BRmap @ data $ GID_2”。只需使用列名“GID_2”。
• by参数需要一个字符/列表，而不是整数，因此mutate应该是mutate(id = as.character(id))。

Brasil <- fortify(BRmap, region = "GID_2") %>%  
  mutate(id = as.character(id)) %>%
  full_join(BRmap@data, by =c("id" = "GID_2")) %>%
  select(c(id, long, lat, order, hole, piece, group, NAME_2))