[R] change the label size when drawing trees with ape

[Hua Li]

Hi All,

I want to be able to change the labe size on a tree
when using ape package so that the graph can look
nicer, but don't know how. Playing with the "font"
doesn't seem to help. (Right now the labels barely
show.) 

Thanks for your help!

Code I'm using now

#-------------------------
t1 = "(((1:77.37,2:77.37):9.4,4:86.77):7.56,3:94.33);"
t2 = "((1:12.56,(2:10.11,4:10.11):2.45):1.64,3:14.2);"
t3= 
"(((1:57.54,3:57.54):11.54,4:69.08):4.13,2:73.21);"
t4 =
"(1:59.27,((2:34.77,3:34.77):6.99,4:41.76):17.51);"
t5 =
"(((1:22.26,4:22.26):3.4,3:25.66):15.81,2:41.47);"
t6 = "(((1:23.3,2:23.3):22.2,3:45.5):37.88,4:83.38);"
t7 =
"(((1:18.49,3:18.49):1.14,4:19.63):5.93,2:25.56);"
t8 =
"((1:40.26,2:40.26):31.51,(3:38.99,4:38.99):32.78);"
t9 =
"(1:60.72,((2:15.57,4:15.57):5.07,3:20.64):40.08);"
t10 =
"((1:54.81,3:54.81):13.81,(2:64.24,4:64.24):4.38000000000001);"
t11 =
"((1:61.44,3:61.44):26.94,(2:26.52,4:26.52):61.86);"
t12 =
"((1:11.05,(3:10.15,4:10.15):0.9):68.71,2:79.76);"
t13 =
"(((1:39.53,3:39.53):6.25,4:45.78):3.09,2:48.87);"
t14 =
"((1:55.12,(2:37.99,3:37.99):17.13):18.28,4:73.4);"
t15 =
"((1:73.39,(2:54.24,4:54.24):19.15):20.58,3:93.97);"


library(ape)

ft = c(5,5,5,5)
postscript("test.ps")
par(mfrow=c(5,3))
plot(read.tree(text=t1),font=ft)
plot(read.tree(text=t2),font=ft)
plot(read.tree(text=t3),font=ft)
plot(read.tree(text=t4),font=ft)
plot(read.tree(text=t5),font=ft)
plot(read.tree(text=t6),font=ft)
plot(read.tree(text=t7),font=ft)
plot(read.tree(text=t8),font=ft)
plot(read.tree(text=t9),font=ft)
plot(read.tree(text=t10),font=ft)
plot(read.tree(text=t11),font=ft)
plot(read.tree(text=t12),font=ft)
plot(read.tree(text=t13),font=ft)
plot(read.tree(text=t14),font=ft)
plot(read.tree(text=t15),font=ft)
dev.off()