I can not reproduce your example code

[nongbaoting]

I have encountered an error!

> sim.groups <- normalise(sim.groups)
Error in normalise(sim.groups) : could not find function "normalise"

[tengfei-emory]

It seems that the latest version of package scater renamed the normalise function as logNormCounts. You may try logNormCounts(sim.groups) instead.

[FengXu1218]

I have encountered an error!
Downloading GitHub repo tengfei-emory/scBatch@master
错误: Failed to install 'scBatch' from GitHub:
Could not find tools necessary to compile a package
Call pkgbuild::check_build_tools(debug = TRUE) to diagnose the problem.

[tengfei-emory]

You need to install Rtools to compile this package: https://cran.r-project.org/bin/windows/Rtools/.