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sinc(x,y)

A three-dimensional cardinal sine function with various colormaps. The vertical aspect ratio is increased to show the function more clearly.

Click button to open the graphic in a separate full window. The figure can be rotated by clicking and dragging with a mouse or swiping on a touch device, as well as zoomed in or out with a mouse wheel or pinching on a touch device.

The rotationally symmetric cardinal sine function used here is defined by

\[ \operatorname{sinc} r = \frac{ \sin r }{ r } \]

Examples Page