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SAS/INSIGHT Software

Contour Plot

A contour plot is a graphical representation of the relationship between a response variable (Z) and two explanatory variables (X and Y). The contours (or level sets) of a response variables are plotted in the plane of the explanatory variables. The contour levels are plotted as curves or as filled areas.

You can interactively identify, label, color, and move contour levels, and can change the resolutions of a rectangular grid to get better computational quality and performance. You can choose linear interpolation or thin-plate smoothing spline to fit contour surface functions.

You can also toggle, identify, and label observations in the contour plot, control the orientation of the plot, and control the information shown on the axes.

[Figure]

Figure 1.4: Contour plots


Variables

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