BuildFP: Setup the FindPairs object
In fenghuijian/FindPairs: Finding Intercellular Interaction Pairs

Setup the FindPairs object

1	BuildFP(data, meta.data, interactive.type, ident = c("mtp", "stp"))

`data`	the normalized data of gene expression
`meta.data`	annotation of cells. "Cell types" must be annotated. If it is multi-times-point, the times information should be added to the dataframe.
`interactive.type`	The feature expressed by cell types. The dataframe must contain two variables. This parameter needs to be set manually, and it must follow the format below. the cell types must be in the first column the gene feature must be in the second column, and gene feature have two varibales: "SYMBOLA" means this gene feature is "SYMBOLA" feature and "SYMBOLB" means this gene feature is "SYMBOLB" feature.
`ident`	Determine whether the input data contains multi-times information. There are two arguments, mtp: multi-times-point or stp: single-time-point.