任一:

• 使用来自以下位置的软件包明确为函数添加前缀:ncdf4::nc_open(...)

或者:

• 在您的NAMESPACE文件importFrom(ncdf4, nc_open)中添加一行，然后在您的代码中调用不带软件包的函数:nc_open(...)

• add a line in your NAMESPACE file importFrom(ncdf4, nc_open) and then in your code, call the function without the package: nc_open(...)

除了为要导入的每个函数添加importFrom行之外，您还可以使用import(ncdf4)来封装该程序包中的所有内容.

Rather than adding an importFrom line for every function you want to import, you can also use import(ncdf4) to snarf everything from that package.