LRC3_ContactMatrixPlot: The Contact Matrix Plot
In XiaojuanShen/LRC3: Ligand-Receptor based Communication

This function performs the Plot on the contacts between different cell types. It gives 4 different plots in total. IndexNumber 1 is the matrix showing the contact number between different cell types in two direction: ligand to receptor(OUT), receptor to ligand(IN). IndexNumber 2 is the scaled matrix showing the scaled contact number between different cell types. The scaled number is the ratio of the expression level of that gene to the threshold. IndexNumber 3 is the undirectional contact matrix,which add the In and OUT signals between two cell types. IndexNumber 4 is the undirectional scaled contact matrix. Both one column and one row in the plot represent one cell type,respectively. The color in the plot represents the contact number.

1 2	LRC3_ContactMatrixPlot(LRC3_list, IndexNumber, Cluster = FALSE, SaveImage = FALSE, FileName = "Contactmatrix")

`LRC3_list`	the input data generated by function LRC3_INF.
`IndexNumber`	the Index of the plot.
`Cluster`	if `Cluster =FALSE`, the visualization of the result will not be clustered.
`SaveImage`	if `SaveImage =FALSE`, save image as pdf file.
`FileName`	if `SaveImage =TRUE`, give the name to the pdf file.