MathGroup Archive 2008

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Corrupt graphics output


Hello,

I was playing around with Mathematica the other day and was attempting
to graph the modulus of the complex-valued gamma function.  When I use
a PlotPoints value of 120 the graph looks fine.  However, the 
following command yields a corrupt graph (PlotPoints value of 150).

Plot3D[Abs[Gamma[x + I y]], {x, -5, 5}, {y, -5, 5}, 
 PlotPoints -> {150, 150}, PlotRange -> {0, 10}, 
 BoxRatios -> {1, 1, 0.8}, AxesLabel -> {x, I y, Abs[Gamma[z]]}]

Anyone know the reason for this and possible solutions?

Thank you,
Paul


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