Computation of
Chaos Game Representation of  Z-scores (ZCGR)

Sequence name
 Compute data for
Search oligos of length
Z-score range used for ZCGR images
Sequence code (max: 1,000,000 bp; all digits, spaces and other non-coding characters will be removed)

or    Upload sequences

This tool will count occurrence of oligonucleotides up to 5 bases long, and it will compute expected ocurrences in a sequence with the same composition. More info related to the method used for calculation is shown here.

After the calculations, all generated data will be downloaded in the response page (occurrences, and expected mean, variance and z-score values) and a Chaos Game Representation of z-scores image (ZCGR) will be generated. Consider saving the web page to your hard disk. Functionality will not be lost.

No data from users is recorded, except for statistical purposes. This system does not allow working with more than one sequence simultaneusly. In case you need to perform calculations for sequences longer than 1,000,000 bp, or for oligonucleotides longer than 5 bases, contact us

NOTE:
When selecting Z-score range -1/+1, intensity of squares' colour will increase (more red and more blue squares will be shown).
When selecting only upper strand for calculations, occurrences of oligonucleotides will be computed only in the upper strand, and the complementary sequence will not be used at all (neither for calculation of expected number of occurrences).