| iTool User's Guide: Working with Images |

## Contouring an Image

You can also insert a contoured representation of your image data into your visualization. To do this:

1. From the iImage window containing a visualized image, select Operations Contour.

2. The Contour dialog appears (shown below) allowing you to adjust contour setting, including:

- Number of levels: Set the number of contouring levels

- Value: Set the contour value to use

- Projection: Choose the contour type (Planar or 3D)

Figure 10-7: The Contour Dialog

Figure 10-7: The Contour Dialog

3. After making any contour property changes, select OK to contour your image data.

The following figure shows contouring added to the image of a meteor surface.

Figure 10-8: A Contoured Image in iImage

Figure 10-8: A Contoured Image in iImage

You can highlight and double-click your contoured image data, invoking the Visualization Browser which allows you to edit Contour Level properties and Contour Level color table data. For more information on these edit options, see Contour.

IDL Online Help (March 01, 2006)