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Contour Plot |

Grid Size:
Horizontal Size | specifies the horizontal resolution of the rectangular grid over which contour function is evaluated. |

Grid Size:
Vertical Size | specifies the vertical resolution of the rectangular grid over which contour function is evaluated. |

Fit:Linear
Interpolation | linearly interpolates contour function across rectangular grid cells. |

Fit:Thin-Plate
Smoothing Spline | fits contour function over rectangular grid using thin-plate smoothing spline fitting. The process may be much slower than linear interpolation. It usually produces very smooth contours. See "Smoothing Spline Surface Plot" in Chapter 39, "Fit Analyses," for more information on thin-plate splines. |

Number of
Contour Levels | specifies the number of contour levels to be drawn in a contour plot. The contour levels are initially spaced evenly within the range of the Z variable. |

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