MergeSeurat: Merge Seurat Objects
In mayer-lab/SeuratForMayer2018: Seurat : R Toolkit for Single Cell Genomics

Merge two Seurat objects

MergeSeurat(object1, object2, project = NULL, min.cells = 0,
  min.genes = 0, is.expr = 0, do.normalize = TRUE, scale.factor = 10000,
  do.scale = FALSE, do.center = FALSE, names.field = 1,
  names.delim = "_", save.raw = TRUE, add.cell.id1 = NULL,
  add.cell.id2 = NULL)

`object1`	First Seurat object to merge
`object2`	Second Seurat object to merge
`project`	Project name (string)
`min.cells`	Include genes with detected expression in at least this many cells
`min.genes`	Include cells where at least this many genes are detected
`is.expr`	Expression threshold for 'detected' gene
`do.normalize`	Normalize the data after merging. Default is TRUE. If set, will perform the same normalization strategy as stored for the first object
`scale.factor`	If normalizing on the cell level, this sets the scale factor.
`do.scale`	In object@scale.data, perform row-scaling (gene-based z-score). FALSE by default, so run ScaleData after merging.
`do.center`	In object@scale.data, perform row-centering (gene-based centering). FALSE by default
`names.field`	For the initial identity class for each cell, choose this field from the cell's column name
`names.delim`	For the initial identity class for each cell, choose this delimiter from the cell's column name
`save.raw`	TRUE by default. If FALSE, do not save the unmodified data in object@raw.data which will save memory downstream for large datasets
`add.cell.id1`	String to be appended to the names of all cells in object1
`add.cell.id2`	String to be appended to the names of all cells in object2