[Chimera-users] measure a mean intensity of a segmented map

Hi, Here I want to evaluate the flexibility of variable domains of a density map. How can I quantify the mean intensity of segmented parts by Chimera? Thanks! Best wishes! Zhihai Li Ph.D student in State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics. School of Life Sciences, Xiamen University. Xiang'an Road(South), Xiang'an District, Xiamen City, Fujian Province, China.