[pstricks] coordinates of nodes

[John Frampton]

Dear all,

I have a diagram with several nodes at different heights, and a
horizontal line below all of the nodes.  I would like to draw
vertical lines from the nodes to the horizontal line.  If I could
recover the coordinates of a node, the problem would be solved.
Is that possible?  Is there another way to solve the problem?

Thanks in advance,
John Frampton

--

Knowing that this list has many European contributes, I must say
that I apologize that my government is criticizing the Spanish
people as appeasers.  The reality seems to be that they have
recognized that the war in Iraq is not contributing to the effort
to fight terrorism.