Mapping for Potential Distribution in a Straight Line Capacitor?

[industrygiant]

Hi, my question is what mapping to use for the problem in the picture attached.

I need to be able to find the potential distribution etc by mapping from the x-y plane (as pictured) to a straight lines plane capacitor, which would be pretty straightforward, but I can't find this map in any mapping "dictionaries"!

I guess that I could use the symmetry along the horizontal to help place my axes but obviously I am unsure on the next step to take.

 

[lanedance]

hey industrygiant - just so you know, the pics take quite a while to clear

 

[industrygiant]

Ah okay thanks, didn't know :) do they work automatically when cleared? can't find anything about this on the forum...