将SpatRaster对象转换为SpatialGridDataFrame

Question

如何将SpatRaster对象(从terra包)转换为SpatialGridDataFrame对象？

r <- terra::rast(matrix(runif(10), 5, 5))
as(r, "SpatialGridDataFrame")

> Error in as(r, "SpatialGridDataFrame") : 
  no method or default for coercing “SpatRaster” to “SpatialGridDataFrame”

Answer 1

你必须穿过栅格：

library(terra)
library(raster)

x <- terra::rast(matrix(runif(25), 5, 5))
y <- raster(x)
z <- as(y, "SpatialGridDataFrame")