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How to compute the average distances between groups of taxa with Mega?

I have pyrosequencing data set of a nuclear gene, up to 36000 sequences. I tried to compute the average distances between groups of taxa with Mega but when I defined sequence groups, Mega stopped responding? Can anyone help?

Thank you. 

mega

Thank you so much for the help. So it seems like Mega only works with 800 sequences. We decided to prepare a python code for the calculation anyway. Have a nice day.

Any chance you have solved this problem with a python script? I am facing the same issue now where I need to calculate an average p-distance without MEGA and am not sure how to go about it.

1 answer

Did you give all your sequenses to MEGA6 simultaneously?

Even for MEGA6 it too many - see this picture:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3840312/figure/mst197-F1/

It's Fig.1 from this article:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3840312/

I've asked your question in MEGA6 HELP:

http://imgur.com/b03eN5u

MEGA can calculate these things from picture below,

http://imgur.com/Zp6pB0L

Are you sure the mean value you need is among them?

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