手头的任务是将empprevyearpct 值映射到县地图。样本数据如下。
library(tidyverse)
library(tigris)
countyname <- c("Carson City","Churchill County","Clark County","Douglas County","Elko County","Esmeralda County","Eureka County","Humboldt County","Lander County","Lincoln County","Lyon County","Mineral County","Nye County","Pershing County","Storey County","Washoe County","White Pine County")
prevyearpct <- c(.545,.541,.539,.401,.301,.201,.101,.001,.664,.604,.704,.123,.129,.130,.085,.015,.099)
data2 <- data.frame(countyname, prevyearpct)
这是我从 Tigris 用来获取形状文件的代码。
NV_counties <- counties(32)
我不需要为我完成的工作。如果我要将 prevyearpct 值映射到县，我将从哪里开始？我是否需要附加数据以使 NV_Counties 和 data2 成为一个合并项目？我已经阅读了很多文章/教程，但没有使用 tigris。