[pstricks] two minor questions

[Herbert Voss]

Am 06.08.2010 17:30, schrieb Zbigniew Nitecki:
> 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?

no, but I already answered it ...:-)

Herbert


> 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