From: MetaComp: comprehensive analysis software for comparative meta-omics including comparative metagenomics
S 1
S 2
…
S n
F 1
c 11
c 21
c n1
F 2
c 12
c 22
c n2
F 3
c 13
c 23
c n3
F m
c 1m
c 2m
c nm