id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
8030	"PDB file reader accepts ""nan"" coordinates without warning"	Tom Goddard	Eric Pettersen	"A few times we have seen users open PDB files which have coordinates listed as ""nan"", probably from energy minimization.   ChimeraX gives no warning and simply sets the coordinates to NaN which of course blows up almost any later code that tries to use it.  The source of the error is then pretty unclear.  It would be better if the PDB reader gave an error about NaN coordinates so the user knows what went wrong.  But if it slows the PDB reader down it is probably not worth it.

Ticket #8014 is an example of this problem.

I'll attach a PDB file where I changed the x coordinate of /A:12@CB nan for testing.
"	enhancement	closed	moderate		Input/Output		fixed						all	ChimeraX