Hi Prof,

how to make the vectorField2D appears as zero when the value is zero?

I trying to make the Bar Magnet vectorField2D appears as zero.

I try many things.
[img]http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=1562.0;attach=2020;image[/img]
change the Graphical Aspect
Visible : hideField==false[b][color=blue]||vectorfieldmaxopposite>10[/color][/b]

Appearance:
minimum
Maximum
Levels
Invis Level


i tried many many things and times, can't get the RHOMBUS to be invisible when the vectorfieldmaxopposite= 0

any ideas?