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[✓] Smooth this graph?

Posted 7 months ago
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I used a previously functioning code with slight modifications-making the range of the function correspond to a user input of M- and the graph will not come out smoothly. I was told there was some sort of syntax error involved, but I have not been able to identify it. This is the altered code and the poorly depicted graph.

2 Replies

Use PlotPoints option in ContourPlot to get smoother contours.

levelsetwithbounds1[e_, k_, M_] := Module[{k1, set1}, k1 = k; 
set1 = ContourPlot[e == k1, {x, -M, M}, {y, -M, M}, Axes -> True, Mesh -> Full, PlotPoints -> 50]; Return[set1]];
levelsetwithbounds1[x^3 - y, 30, 40]

or:

MaxRecursion option in ContourPlot to get refine the surface.

levelsetwithbounds2[e_, k_, M_] := Module[{k1, set1}, k1 = k; 
set1 = ContourPlot[e == k1, {x, -M, M}, {y, -M, M}, Axes -> True, Mesh -> Full, MaxRecursion -> 6]; Return[set1]];
levelsetwithbounds2[x^3 - y, 30, 40]

Regards,MI

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