Error in FindNeighbors(sc1, dims = pc.num) : could not find function "FindNeighbors"
Matrix 1.6版本以上会和seurat不兼容,回退版本即可
remove.packages("Matrix")
packageurl <- 'https://cran.r-project.org/src/contrib/Archive/Matrix/Matrix_1.5-1.tar.gz'
install.packages(packageurl, repos=NULL, type="source")