Dear all, I need to do the work for thousands of structures, so Iam interesting in a scripting solution here. After a surfnet calculation on a given atom selection, my script select the whole surface model and calculates the volume of the all bunch. However, I'd like to have the volume of the major blob only. On the other hand, for a given number of structures, I would like to remove all minor blobs blobs so that only the major one remains on the screen. How could I do this second step? All the best, JD Dr. Jean-Didier Maréchal Lecturer Computational Biotechnological Chemistry @ Transmet Unitat de Química Física Departament de Química Universitat Autònoma de Barcelona Edifici C.n. 08193 Cerdanyola (Barcelona) Tel: +34.935814936 e-mail: JeanDidier.Marechal@uab.es