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Modeling and Multivariate Methods - SAS

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546 Plotting Surfaces Chapter 23<br />

The Surface Plot Control Panel<br />

Figure 23.9 Activated X <strong>and</strong> Y Grids<br />

Dependent Variables<br />

The dependent variables controls change depending on whether you have selected Sheet, points or<br />

Isosurface in the Appearance Controls.<br />

Controls for Sheet, Points<br />

The Dependent Variables controls are shown in Figure 23.10 with its default menus.<br />

Figure 23.10 Dependent Variable Controls<br />

Formula<br />

lets you pick the formula(s) to be displayed in the plot as surfaces.<br />

Point Response Column<br />

lets you pick the column that holds values to be plotted as points.<br />

Style menus appear after you have selected a Point Response Column. The style menu lets you choose<br />

how those points are displayed, as Points, Needles, a Mesh, Surface, or Off (not at all). Points shows<br />

individual points, which change according to the color <strong>and</strong> marker settings of the row in the data table.<br />

Needles draws lines from the x-y plane to the points, or, if a surface is also plotted, connects the surface<br />

to the points. Mesh connects the points into a triangular mesh. Surface overlays a smooth, reflective<br />

surface on the points.

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