Adding Intersection Layers

Diagram of two circles intersecting on a coordinate plane. The first circle, colored white, is centered at (0, 0) and has a radius of 5. The second circle, filled with red dashes, is centered at (4, 0) and has a radius of 5. The x-axis is labeled "X" and goes from -10 to 10. The y-axis is labeled "Y" and goes from -10 to 10. The two circles intersect at two points. The area where the circles intersect is marked with red horizontal lines.

To add an intersection to a Cartesian graph:

  1. Insert a Cartesian graph or edit an existing graph by double-clicking it. The Cartesian Graph dialog box opens.

  2. In the Layers section, click Add.

  3. Select Intersection in the Add Cartesian Layer dialog box and then click OK.

  4. Choose the graphs to which you want the intersection to apply.

    Note: You must have at least two layers or graphs, and the selected graphs must have a Fill Color and Fill Shading specified.

  5. Choose a Color for the intersection area.

  6. Select a pattern from the Shading list to specify the pattern applied to the intersection.

  7. If you want the layer to display only if a certain condition is met, enter an equation or a variable that evaluates to true or false into the Show if field. .

    Note: When entering variables, enclose the variable name in two opening and two closing number signs (for example, ##var1## = 3). The variable you reference must be defined for the question or the preface associated with the question.

  8. Click OK.