Plot a cloud of cells
# S3 method for cloud.of.cells
plot(cells, title = "", alpha = 1, frame = FALSE,
cell.border.color = "black", cell.border.size = 0.1,
clone.grouping = "random", limits = c(-50, 50))
cell cloud as returned from generate.cloud.of.cells
draw a frame surrounding the cloud of cells
color of the border of the circles used to draw a cell (default = black)
line size of the cell border, the smaller the figure size is, the smaller this value needs to be (default = 0.1)
how the cells of the same clone being grouped values are c("random", "horizontal", "vertical"), default="random"