Hi Surendra, Yes, if you are doing map-in-map fitting, it calculates the correlation values, in 1.5 and also in earlier versions. You have the choice of calculating the correlation about zero or about the mean. If you are doing atoms-in-map fitting, it does not give correlation values UNLESS you turn on the "Use map simulated from atoms" option, and in that case you also need to enter a resolution value for the simulated map. If you click the Help button on the dialog it will show the manual page with more detailed explanations, http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/fitmaps/fitmaps.htm... I hope this helps, Elaine ---------- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Dec 15, 2010, at 9:33 AM, Negi, Surendra S. wrote:

Hi Elaine, In EM fit, Is it possible to calculate the Correlation? I am using current version 1.5 of UCSF chimera. Thank you. Surendra ps: the snapshot is available at : http://img221.imageshack.us/img221/2492/screenshotpt.png