使用R

Question

我有一份来自印度北阿坎德邦的地点列表。数据集就像这样

    address lat long
    Ajabpur 30.0431765  78.8255226
    UHC Ajabpur 30.0431765  78.8255226
    Asan Bag    30.5829083  77.7523608
    Ashtad  30.6865869  77.8453043
    Badripur    30.2843949  78.0656264
    Balawala    30.2661801  78.1062092
    Ballupur    30.3335862  78.0115041
    Barontha    30.066753   79.0192997

我希望使用R在Uttarakhand地图上绘制这些点。我如何实现它？

Answer 1

有几个例子。

但是这里有ggplot2和ggmap。查看ggmap的手册，你会发现很多选项。

data_table <- read.table(text="
add         lat         long
Ajabpur     30.0431765  78.8255226
UHCAjabpur  30.0431765  78.8255226
AsanBag    30.5829083  77.7523608
Ashtad      30.6865869  77.8453043
Badripur    30.2843949  78.0656264
Balawala    30.2661801  78.1062092
Ballupur    30.3335862  78.0115041
Barontha    30.066753   79.0192997",
    header = TRUE)

library(ggplot2)
library(ggmap)

map <- get_map(
location = c(78.825, 30.04),
source = "google", zoom = 15, maptype = "satellite"
)

ggmap(map) +
geom_point(data=data_table, aes(x = long, y = lat), alpha = .5, color="red")