I have a reference line that I have made 7px wide. When I see it appear in my chart it 'looks' like the line is off 'to the right'.
I believe that the initial 1px is used to show the value and the additional 6px are 'glued' to the right.
How can I 'align =center' this wide reference line, so it will select the '4th px' to be centered?
The blue line represents the center of the thick reference line. The human eye will not 'score' the value to be exact 8.
Thanks for any ideas!