我有一个sf
样式的数据框,其结构如下:
Classes ‘sf’ and 'data.frame': 1672 obs. of 3 variables:
'$ grid.100:sfc_POLYGON of length 1672; first list element: List of 1
' ..$ : num [1:5, 1:2] 542829 543129 543129 542829 542829 ...
..- attr(*, "class")= chr "XY" "POLYGON" "sfg"
' $ id : int 1 2 3 4 5 6 7 8 9 10 ...
' $ count : int 0 0 0 0 0 0 0 0 1 0 ...
- attr(*, "sf_column")= chr "grid.100"
- attr(*, "agr")= Factor w/ 3 levels "constant","aggregate",..: NA NA
..- attr(*, "names")= chr "id" "count"
我要做的是从POLYGON功能中提取单个坐标,因此多边形的每一边都是数据框中自己的列。
有什么想法吗?
答案 0 :(得分:0)
我想出了这一点:
grid.sff <- grid.sf %>%
dplyr::mutate(latt = sf::st_coordinates(grid.sf$center)[,1]) %>%
dplyr::mutate(lonn = sf::st_coordinates(grid.sf$center)[,2])