Build lineage tree based on Neighbor Joining

Usage

lineage_tree(data, idx = "celltype", method = "spearman", ...)

data: data.frame, indicating lineage tracing data, first column should be lineage tracing barcodes, second column should be related cell type
idx: column name of cell type
method: character, indicating which correlation coefficient (or covariance) is to be computed. One of "pearson", "kendall", or "spearman (default)": can be abbreviated.
...: parameter of plot function