I am using the showCrossCorr() plotting associated with the ProDy library. I am trying to produce a plot similar to figure 3 from this publication and the plot works fine but the issue I am running into is that my plot uses atoms instead of residues for the plot axis and I can't figure out how to change that.

Code snippet:

f2 = parsePDB('/Users/me/Desktop/signdy/rec-f2.pdb')
anm1 = ANM('f2')
anm1.buildHessian(f2)
anm1.calcModes()
showCrossCorr(anm1[:])