Specifying tree height and width

[drdna]

It seems there is no way to change tree height to accommodate large numbers of tip labels. I've read suggestions to expand the page size but this will not result in changes in the aspect ratio of the tree which is what is really desired. Functions which work in ggplot (e.g. coord_fixed(ratio = 2)) do not seem to work in ggtree.

[GuangchuangYu]

coord_fixed(ratio = 2) should work for rectangular layout.

[drdna]

Plot without coord_fixed(ratio = 2):

Plot with coord_fixed(ratio = 2):

Note the strange behavior and how the y-axis didn't expand to fit page.