Sort Q3D Scatter Data Array that contains many QVector3D.

[Elthon]

The Q3D Scatter Data Array consist of many QVector3D 3Dvectors. Each of the QVector3D in the Array is a 3D vector that consist of (x,y,z) value. I would like to arrange the Array which contains the 3D vectors, in order of smallest value of Z to largest and if there is replicate/same value of Z then arrange the smaller X value first. If both Z and X value the same then the order doesn't matter.

Can someone please enlighten me, will appreciate your help so much! thanks.