Plot3D question
- To: mathgroup at smc.vnet.net
- Subject: [mg70622] Plot3D question
- From: "dimitris" <dimmechan at yahoo.com>
- Date: Sat, 21 Oct 2006 05:14:18 -0400 (EDT)
Hello again. I would like to know why the Plot3D function does not complain about the following command (note there is a singularity at y=0) Plot3D[Sin[x]/y, {x, -10, 10}, {y, -10, 10}] whereas it does complain (a lot!) about the following Plot3D[Sin[x]/y, {x, -10, 10}, {y, -10, 10}] I believe it has to do with the non-adaptive algorithm used by Plot3D, but even the command Plot3D[Sin[x]/y, {x, -10, 10}, {y, -10, 10},PlotPoints->100] does not change the behavior. Note that I don't have any problem why the Plot function does not complain about the following command Plot[Sin[x]/x, {x, 0, 10}]; since I understand that the adaptive algorithm actually does not sample points at x=0 Short[Cases[%, {x_?NumberQ, y_?NumberQ} /; x = 0 && y > 0.9, 8], 2] I really appreciate any comments/guidance/insight. Thanks Dimitris
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