[pstricks] another confusion about \parametricplotThreeD
Nitecki, Zbigniew H.
Zbigniew.Nitecki at tufts.edu
Mon Jan 2 16:20:10 CET 2012
Thanks---I had forgotten whether the previous example had been \parametricplotThreeD or just \parametricplot.
The example I sent this time did not have the extra jul (I wanted t^2, not t^3).
In any case, unless I am being very blind, my real question in this post is different: why is the green curve,
coded as
\parametricplotThreeD[linecolor=green](-3,3){%
t
0
t dup t mul 36 add sqrt 3 div
}
printing in the yz-plane (x=0) instead of the xz-plane (y=0)?
Zbigniew Nitecki
Department of Mathematics
Tufts University
Medford, MA 02155
telephones:
Office (617)627-3843
Dept. (617)627-3234
Dept. fax (617)627-3966
http://www.tufts.edu/~znitecki/
On Jan 2, 2012, at 9:59, Herbert Voss wrote:
Am 01.01.2012 23:31, schrieb Nitecki, Zbigniew H.:
I have a confusing situation: the code below leads to the attached figure, which is OK except that the green curves
are supposed to be in the xz-plane (they have y=0) but instead they are in the yz-plane. What can cause this anomaly?
BTW, can one use an algebraic notation option (instead of reverse Polish=postscript) in \parametricplotThreeD?
I already send you an example with algebraic notation
\parametricplotThreeD[linecolor=green](-3,3){%
t
0
t dup t mul 36 add sqrt 3 div
}
the same problem as in your another example, a missing mul
t dup t mul mul 36 add sqrt 3 div
use
t 3 exp
instead, then it is easier or use algrbraic noattion
Herbert
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