Dear all,
I have a BEAST tree generated by a phylogeographic model (multitype tree model), with edges and nodes of the tree colored by the geographic location.
When I imported the tree into R, the treedata contains the variable 'type.prob', which refers to the posterior probability of the inferred internal node location. My tree is quite large with many internal nodes, so a pie chart showing the probability of locations at each node is likely an unhelpful visual. So I was thinking to change the transparency of the edge according to the probability value, with more transparent edges indicating a lower probability. I tried to use 'alpha=type.prob' within the ggtree() function; however, type.prob is a chr variable and alpha=... would produce an error.
Does anyone have suggestions on how to solve this issue?
Thank you in advance.
