Hi,

I am using rms_cur for calculating rmsd for two sets of structures. It
works for the first set but for the second one its gives error:
PyMOL>rms_cur sel1,sel2
ExecutiveRMS-Error: No atoms selected.

Here's the result for set1:

PyMOL>select sel1, native and resid 1:53+56:72 and name P and chain M
 Selector: selection "sel1" defined with 0 atoms.
PyMOL>select sel1, native and resid 142:237 and name P and chain M
 Selector: selection "sel1" defined with 95 atoms.
PyMOL>select sel2, best and resid 142:237 and name P and chain B
 Selector: selection "sel2" defined with 95 atoms.
PyMOL>alter all,segi=""
 Alter: modified 10424 atoms.
PyMOL>alter all,chain=""
 Alter: modified 10424 atoms.
PyMOL>rms_cur sel1,sel2
 Executive: RMS =    7.985 (95 to 95 atoms)


============

Here's the result for set2:
PyMOL>select sel1, 1sj3-1_16715 and chain R and name P and resid 764:835
 Selector: selection "sel1" defined with 72 atoms.
PyMOL>select sel2, 1sj3 and chain R and name P and resid 101:172
 Selector: selection "sel2" defined with 72 atoms.
PyMOL>alter all,segi=""
 Alter: modified 6110 atoms.
PyMOL>alter all,chain=""
 Alter: modified 6110 atoms.
PyMOL>rms_cur sel1,sel2
ExecutiveRMS-Error: No atoms selected.
PyMOL>rms_cur sel1,sel2
ExecutiveRMS-Error: No atoms selected.

What is the reason behind this ??


-- 
*Best Regards*
Bharat
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