Plot Area Properties

Position the mouse pointer in the Plot Area and right-click to display a context menu. On the context menu, select Plot Area Properties. IML Studio displays a dialog box containing the following tabs:

• Contours

This tab controls the color and placement of contours. This tab provides the following controls:

Contour levels

This list box displays each contour in the plot. The contours are labeled by values of the Z variable. You can select one or more items in the list to change their properties or to remove them from the list.

Remove selected levels

This button removes the contours that are selected in the Contour levels list.

Contour Styles tab

This tab specifies the contour colors and line styles. These attributes are not applied until you click the large left arrow.

Color

This option button specifies a single color for the selected contour levels.

Blend

This option button specifies a gradient colormap for a range of contour levels.

Style

This drop-down list specifies a line style for the selected contours.

Width

This drop-down list specifies a line width for the selected contours.

Levels tab

This tab specifies the number and range of contour levels. These contours are created when you click the large left arrow. This tab provides the following controls:

Number

This box specifies the number of contours to create.

Minimum

This box specifies the lower endpoint of the Z interval in which the new contours should be created.

Maximum

This box specifies the upper endpoint of the Z interval in which the new contours should be created.

After you have specified values for the Number, Minimum, and Maximum boxes, click the large left arrow to generate equally spaced levels within the specified range (Minimum to Maximum) and to add those levels to the Contour levels list. The contours are not added to the plot until you click OK or Apply.

You might wish to color-code the newly added levels by using the Contour Styles tab.

To add a contour to a plot at an exact value, set Number to 1 and Minimum and Maximum to the same value.

• Contour Options

This tab enables you to control the computation and appearance of contours. The contours are computed by a piecewise-linear interpolation of the response function on a uniform grid. For smooth response functions, a fine grid gives better resolution of the contours than does a coarse grid.

This tab provides the following controls:

Horizontal lines

This box specifies the number of horizontal lines in the uniform grid.

Vertical lines

This box specifies the number of vertical lines in the uniform grid.

Show contour lines

This check box specifies whether contour lines are shown.

Show contour areas

This check box specifies whether the region between contours is filled with color.

Show contour values

This check box specifies whether contour lines are labeled by the value of the Z variable.

For a discussion of the remaining tabs, see General Plot Properties.