[pstricks] tangential vector

Doris Wagner doris.wagner at mac.com
Wed Apr 8 17:45:53 CEST 2009

hi list,

I have a graph which shows a trajectory (e.g. polynomial) of a  
physical object and I want to draw the tangent vector. the problem  
with \psplotTangent is that it goes in two directions from one point  
of the graph. is there a possibility to get only half of it?


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