Video talks on 16S data analysis posted.

URMAP ultra-fast read mapper posted (paper).

~20% of taxonomy annotations in SILVA and Greengenes are wrong (paper).

Taxonomy prediction is <50% accurate for 16S V4 sequences (paper).

97% OTU threshold is wrong for species, should be 99% for full-length 16S, 100% V4 (paper).

otutab_stats command

See also
OTU commands
OTU table
Making an OTU table (otutab command)

Creates a report from an OTU table giving statistics such as number of OTUs, number of samples, range of reads per sample and so on.

The -output file specifies the name of a text file where the report is written.

The format of the report is subject to change as new features are added.

Example

usearch -otutab_stats otutable.txt -output report.txt