CNViewer is designed to compare the copy number (CN state) and loss of heterozygosity (LOH) data from Affymetrix SNP 6.0 microarrays between affected and unaffected members of a pedigree.

CNViewer showing the smooth signal data for 3 affected and 2 unaffected members of a pedigree

Feature guide

A “walk-through” explanation, with screenshots, of how to use CNViewer:

HTML guide


The download page currently offers a preview version of the CNViewer program and some sample data files, used in the examples shown in the online Guide.

CNViewer has been written by Ian Carr. It is still undergoing testing, and any feedback on its features or performance would be very welcome.



Carr IM, P Diggle CP, Khan K, Inglehearn C, McKibbin M, Bonthron DT, Markham AF, Anwar R, Dobbie A, Pena SDJ, Ali M. Rapid visualisation of microarray copy number data for the detection of structural variations linked to a disease phenotype.
PLoS ONE 2012;7(8):e43466.