<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I would like to do it so the top of the surface is horizontal---since the cross-section is not a circle,<div>r=1 will give me height 4 along the x-axis but height 1 along the y-axis. Is there an equivalent to</div><div>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.<br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; "><br class="Apple-interchange-newline">Zbigniew Nitecki</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Department of Mathematics</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Tufts University</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Medford, MA 02155</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><br></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">telephones:</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Office<span class="Apple-converted-space"><span class="Apple-converted-tab"> <span class="Apple-converted-space"> </span></span></span>(617)627-3843</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Dept.<span class="Apple-converted-space"><span class="Apple-converted-tab"> <span class="Apple-converted-space"> </span></span></span>(617)627-3234</font></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Dept. fax<span class="Apple-converted-space"><span class="Apple-converted-tab"> <span class="Apple-converted-space"> </span></span></span>(617)627-3966</font></p><a href="http://www.tufts.edu/~znitecki/">http://www.tufts.edu/~znitecki/</a></span>
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<br><div><div>On Aug 20, 2010, at 16:01, Herbert Voss wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Am 20.08.2010 15:14, schrieb Zbigniew Nitecki:<br><br><blockquote type="cite">I got <br></blockquote><blockquote type="cite"><blockquote type="cite">5805-1282309844/exa026.pdf<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">(Error : mauvais type d argument dans solidwithinfaces)<br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">and a blank output.<br></blockquote><br>I get not such error ...<br>However, you should tey r=1, then the greatest value of z is 4<br><br>Herbert<br><br><br><br><br><br><blockquote type="cite"><br></blockquote><blockquote type="cite">Zbigniew Nitecki<br></blockquote><blockquote type="cite">Department of Mathematics<br></blockquote><blockquote type="cite">Tufts University<br></blockquote><blockquote type="cite">Medford, MA 02155<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">telephones:<br></blockquote><blockquote type="cite">Office (617)627-3843<br></blockquote><blockquote type="cite">Dept. (617)627-3234<br></blockquote><blockquote type="cite">Dept. fax (617)627-3966<br></blockquote><blockquote type="cite"><a href="http://www.tufts.edu/~znitecki/">http://www.tufts.edu/~znitecki/</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">On Aug 20, 2010, at 3:03, Herbert Voss wrote:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><blockquote type="cite">Am 19.08.2010 22:55, schrieb Zbigniew Nitecki:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Yes, the picture is along the right lines.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I understand some of the code, but not all of it.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">The starred version of \psSurface does not appear in the pst-solides3d documentation;<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I don't see the role of r=3 sqrt 2 mul<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">and what does the last part of the function definition<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span class="Apple-tab-span" style="white-space:pre"> </span>-5 It{pop -5} if<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">mean or do?<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">instead of using base=<xmin xmax ymin ymax> one can specify the<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">radius of the base: r²=x²+y²<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">-5 lt {pop -5} if<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">on the stack is the z value. Is it less than -5 delete it (pop)<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">and replace it with -5.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">use \psSurface to see the differenve to the star version \psSurface*<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Herbert<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">PSTricks mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:PSTricks@tug.org">PSTricks@tug.org</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://tug.org/mailman/listinfo/pstricks">http://tug.org/mailman/listinfo/pstricks</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">archive: <a href="http://www.tug.org/pipermail/pstricks/">http://www.tug.org/pipermail/pstricks/</a><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">PSTricks mailing list<br></blockquote><blockquote type="cite"><a href="mailto:PSTricks@tug.org">PSTricks@tug.org</a><br></blockquote><blockquote type="cite"><a href="http://tug.org/mailman/listinfo/pstricks">http://tug.org/mailman/listinfo/pstricks</a><br></blockquote><blockquote type="cite">archive: <a href="http://www.tug.org/pipermail/pstricks/">http://www.tug.org/pipermail/pstricks/</a><br></blockquote><br>_______________________________________________<br>PSTricks mailing list<br><a href="mailto:PSTricks@tug.org">PSTricks@tug.org</a><br>http://tug.org/mailman/listinfo/pstricks<br>archive: http://www.tug.org/pipermail/pstricks/<br></div></blockquote></div><br></div></body></html>