That's cool, buddy! I am trying to obtain the unit vector of the dipole moment (a vector) using sub Normalize.

 # get dipole moment
     my $dipoleMoment = $setMolecule->DipoleMoment;
       # get the unit vector of dipole moment
     my $direction=Normalize($dipoleMoment);

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unit vector＝±a/|a|. For example, if I want to have the unit vector of (2,-3,6), the calculation process is unit vector＝±（2,-3,6)/√4+9+36＝±（2/7，-3/7,6/7）.

$dipoleMoment is a vector with (X, Y, Z), I am trying to have the unit vector of $dipoleMoment, would you please write sub Normalize to fulfill this calculation?

In reply to Re^4: The problem of getting the unit vector "Undefined subroutine &main::Normalize" by windcrazy86
in thread The problem of getting the unit vector "Undefined subroutine &main::Normalize" by windcrazy86

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