each codon vs. usage table & compare two usage tables
an example:

This graphical representation shows the fraction of each codon compared to the fraction of the same codon in another organism.

Comparisons can be made between a submitted sequence and a codon usage table or simply between two codon usage tables.

Different colors can be choosen for sequence and codon usage table, or for each of the two codon usage tables.
Additional to the information of the html output format the pdf output format gives the fraction of each codon.

Comparing gene to usage table
GFP gene from Aequorea victoria vs. codon usage table from Chlamydomonas reinhardtii

Comparing two usage tables:
H. sapiens vs. E. coli

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