R 包警告：找到“方向”的多个方法表

Question

我正在维护一个用于空间数据的 R 包。当我在 R-devel (Windows) 上运行检查时，我得到："Warning: multiple methods tables found for 'direction'"，这禁止我重新提交我的 R 包。我已经检查过，只有一个函数direction()来自该raster包 - 一个我没有显式导入的包，但建议sf我在其中导入。关于这可能是什么/解决方法有什么想法吗？

Answer 1

> library(sp)
> library(raster)
Warning messages:
1: multiple methods tables found for 'direction' 
2: multiple methods tables found for 'gridDistance' 

新会话：

> raster::direction
standardGeneric for "direction" defined from package "raster"

function (x, ...) 
standardGeneric("direction")
<bytecode: 0x8163a60>
<environment: 0x81349e0>
Methods may be defined for arguments: x
Use  showMethods(direction)  for currently available ones.
Warning messages:
1: multiple methods tables found for 'direction' 
2: multiple methods tables found for 'gridDistance' 
> terra::direction
standardGeneric for "direction" defined from package "terra"

function (x, ...) 
standardGeneric("direction")
<bytecode: 0x312a030>
<environment: 0x30e2640>
Methods may be defined for arguments: x
Use  showMethods(direction)  for currently available ones.

看起来raster和terra都定义了这些泛型，terra 1.5-12 刚刚发布。解决方案： https://github.com/rspatial/terra/issues/485#issuecomment-1012466626 ，在terra之后重新安装raster。