Hi all, Is there an easy way to color two superimposed structures by RMSD (per C-alpha pair)? I had a quick look through the manual and the mailing list and I couldn’t find any easy way to do so for a structure that consists of more than one chain. I think this would be a very useful addition to either render by attribute or the calculation of a morph (because presumably the paired CA-CA distances are already calculated in the process of generating the morph). I have aligned based on one chain in a complex, and would like to color the entire complex by RMSD (to highlight the parts that move the most between two states of the same complex). I can calculate the per CA RMSD using “rmsd #1 #2”, but I can’t see any obvious way to assign that to a residue attribute using the attribute calculator or setattr etc. Many thanks, Oliver.