使用Autodock计算格子时,run ---run autogirid之后就会出现附图这样的提示。虽然也能继续计算下去,但是想请问大家,为什么每次都出现这样的警告提示(图中红框处)呢?
autogrid4: WARNING: I just prevented an attempt to take the arccosine of 1.000000, a value greater than 1.
同学,以后AD出现问题了~先把问题在google里搜一下
比如这个: http://mgl.scripps.edu/forum/viewtopic.php?f=9&t=1759
This message is printed from the section of autogrid which calculates bond-vectors for oxygen H-bond acceptors when 't0' is smaller than -1:
Here an explanation of t0: [from autogrid/main.cpp ~line 2522]
/*
** t0 is the angle out of the lone pair plane, calculated
** as 90 deg - acos (vector to grid point DOT lone pair
** plane normal)
*/
As to specifically why it was printed in your case, I can only hypothesize that there may be non-standard bond lengths or disorder in the oxygen's neighboring atoms which were used to calculate the lone pair plane...
意思就是你的氧原子相邻的原子可能有问题,或者有不合理的键长~~