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Re: more and more hacheurs
Hmmm, Maybe you could get around this problem with a direction field. I'm sure I remember reading about a direction field package for Mathematica in this forum some time - but I can't get through to MathSource at the moment to check this. If you have a height field z(x,y), and form the gradient of this, the direction field of this would be a set of hacheurs. Possible problems would be (1) lines might be all the same length, or (2) might be longest at steeper gradients instead of the preferred opposite of this. If one of these problems exists and you can get around it, this will still not do exactly what you want. But maybe you can use this general approach (gradient operator plus direction field) to construct the picture you want out of graphics primitives (little straight lines). -David. -- David Pearson, Phone: +44 (0)118 9318741 ESSC, Fax: +44 (0)118 9316413 University of Reading, Reading RG6 6AL, Email: dwcp at mail.nerc-essc.ac.uk UK.