Phylogenies: Is PAUP compatible with ETE 3?
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7.6 years ago
joreamayarom ▴ 140

I have just produced a NJ tree using PAUP and a piece of code that looks like this(Which Software Can Be Used To Build Nj Tree With Gtr+I+G Model?, my main reason to use PAUP is explained in the same post). PAUP capabilities to plot trees are relatively limited and since it stores the trees in *.tre format by default, is there a way to export my output trees in a different format like Newick, or one that is fully compatible with ETE 3 and other programs used to visualize trees?

phylogenies Paup trees • 1.7k views
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Entering edit mode
7.6 years ago
Brice Sarver ★ 3.8k

There are two (major) formats in which trees are stored: Newick/New Hampshire/parenthetical and NEXUS. Confusingly, both can use the .tre extension. Because PAUP* and other programs exclusively use NEXUS and others use Newick, there are a lot of ways to convert between them. You can write your own in a variety of languages. Here's a quick, three-line snippet in R:

library(ape)
a <- read.nexus("your_tree.nex")
#can be used to write any object of class 'phylo' or 'multiphylo'
write.tree(a, file="your_tree.phy")

#and, for reference, to write in NEXUS:
write.nexus(a, file="your_tree.nex")
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