Graphical representation of genomes
and oligonucleotide frequencies
Chaos Game Representation (CGR)
as described by Jeffrey (1990).
Represents DNA primary sequence organization.
This script has been extracted from online tools at insilico.ehu.es/genomics/.
CGR and FCGR images for all sequenced bacterial genomes are available here
Example representations for E. coli K12: CGR, FCGR
Source code is available at BioPHP.org