alpha diversity

hi I use the summary.single command. However, I got a negative number of Simpson Index.

simpson simpson_lci simpson_hci
-0.000266 -0.001547 0.001016

Is it the bug of summary.single, or I just need to use the positive Simpson_hci? Can I just regard the negative Simpson number as 0 ?

Hmm… That’s weird. Can you send us a copy of the input file to take a look at?



I will send an E-mail to you.

Thank you for answering me.

Thanks for the bug report. It turns out that this was a minor bug that pops up when you have more sequences than the largest possible integer for your platform. This will be fixed in the next release. Feel free to email us if you want a patch earlier.