[pstricks] axesboxed with surfaceparametree in solides3d
Zbigniew Nitecki
zbigniew.nitecki at tufts.edu
Fri Aug 20 22:48:12 CEST 2010
I would like to do it so the top of the surface is horizontal---since the cross-section is not a circle,
r=1 will give me height 4 along the x-axis but height 1 along the y-axis. Is there an equivalent to
It -5 It{pop -5}fi which cuts the surface off if the value is above a given one, instead of below it (in my case, 4)? This problem was why I initially used surfaceparametree with a variant of polar coordinates.
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 20, 2010, at 16:01, Herbert Voss wrote:
> Am 20.08.2010 15:14, schrieb Zbigniew Nitecki:
>
>> I got
>>> 5805-1282309844/exa026.pdf
>>> (Error : mauvais type d argument dans solidwithinfaces)
>>
>>
>> and a blank output.
>
> I get not such error ...
> However, you should tey r=1, then the greatest value of z is 4
>
> Herbert
>
>
>
>
>
>>
>> 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 20, 2010, at 3:03, Herbert Voss wrote:
>>
>>> Am 19.08.2010 22:55, schrieb Zbigniew Nitecki:
>>>> Yes, the picture is along the right lines.
>>>>
>>>> I understand some of the code, but not all of it.
>>>> The starred version of \psSurface does not appear in the pst-solides3d documentation;
>>>> I don't see the role of r=3 sqrt 2 mul
>>>> and what does the last part of the function definition
>>>> -5 It{pop -5} if
>>>> mean or do?
>>>
>>> instead of using base=<xmin xmax ymin ymax> one can specify the
>>> radius of the base: r²=x²+y²
>>>
>>> -5 lt {pop -5} if
>>> on the stack is the z value. Is it less than -5 delete it (pop)
>>> and replace it with -5.
>>>
>>> use \psSurface to see the differenve to the star version \psSurface*
>>>
>>> Herbert
>>>
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>>
>>
>>
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