[pstricks] two minor questions

Zbigniew Nitecki zbigniew.nitecki at tufts.edu
Fri Aug 6 17:30:41 CEST 2010


Thanks for the advice on linebreaks.  As to my other question (below), OK this one can be solved
(I'lle have to look it up), but my general question remains.  Is there any kind of implicit surface plotter?

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 Aug 6, 2010, at 11:02, Herbert Voss wrote:

> Am 06.08.2010 16:27, schrieb Zbigniew Nitecki:
>> 1. I realize this is probably very difficult to implement, but is there a 3d equivalent of \psplotImp?
> 
> no
> 
>> I would like if possible to plot (part of) the surface defined by
>> 	x^3 y^2 z+x^2 y^3 z + x y z^3 =30 
> 
> if the equation is correct, than you can get a form like z^3+z+a=0
> which can be solved.
> 
>> near the point (-2,3,1).  The point is that I can't (ie, don't know how to) give an explicit formula for one of the variables
>> in terms of the other two.
>> 
> Herbert
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