binary format CHP binary format As this is a child of Binary format, it is assumed that this class is intended to represent the binary form of this format. As described in the definition sources, there are other formats for CHP available. Allyson Lister CHP binary format is a binary data format specification created by Affymetrix, stored in little-endian format and used to store expression, resequencing and genotyping results from algorithms implemented in the GCOS 1.2, 1.3 and 1.4 and BRLMM Analysis Tool software applications. http://www.affymetrix.com/support/developer/powertools/changelog/gcos-agcc/chp.html, http://www.affymetrix.com/support/developer/powertools/changelog/gcos-agcc/chp-xda.html, accessed 22 May 2013.