want to sort x axis in order of y axis

[Lucius_Artorius_Castus]

Hi Everyone, I am using scatter plot to create heat map, So what I want to is I want my x axis to sort by y axis

For example, I want  A dimension's value first listed and then B's and then C's And then D's

is it possible to do? Please let me know

Thanks,

Arotorius Lucious Castus.