[OS X TeX] crossings in pst node

[Nitecki, Zbigniew H.]

In trying to create braid diagrams, I would like (in an automatic way) to create crossings which go “over” other crossings.  That is, something like the \rput* option, that is, an \ncline{A}{B} which, if it crosses an earlier \ncline{C}{D}, dominates it, in the sense that there is a slight space around \ncline{A}{B} so that \ncline{C}{D} “breaks” at the crossing point.  My first guess, \ncline* , has a totally different effect—the unstarred \ncline becomes totally invisible.

Is there such an option?  Of course a workaround is to give \ncline{C}{D} linestyle=dashed, but the standard picture is to only have a break near the crossing, otherwise it is simply a straight line.

Zbigniew Nitecki
Department of Mathematics
Tufts University
Medford, MA 02155

telephones:
Office    (617)627-3843
Dept.    (617)627-3234
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http://www.tufts.edu/~znitecki/




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