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Question: How to extract data from a 3d implicit plot?

Question:How to extract data from a 3d implicit plot?

ArtNX 10 Maple
implicit
June 15 2012
2 
Hi,

I would like to extract data from 3d implicit plot. I try this:
> points := plots[implicitplot3d]((x^2*(1-x^2)-y^2)^2+0.5*z^2-0.025*(1+1.0*(x^2+y^2+z^2)) = 0, x = -1.5 .. 1.5, y = -1.0 .. 1.0, z = -1.0 .. 1.0, numpoints = 1000);
> ptslist := convert(op([1, 1], points), listlist);
> ptslist[1..12];

Maple prints a list:

[[[-1.50000000000000, -1., -1., 14.9039062500000], [-1.50000000000000, -1., -.818181818181818, 14.7468814566116], [-1.50000000000000, -1., -.636363636363636, 14.6212616219008], ... ]

There are 4 numbers in each element: x, y, z and the 4th number - is it f or something else?
How can I save just [x, y, z] in my data file?

Thanks.
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