| iTool User's Guide: Working with Contours |

## iContour Tool Operations

The iContour tool provides the following operations:

### Viewing a Histogram

A density histogram is a density plot showing the distribution of data values. The X-axis represents data values and the Y-axis represents density or frequency. Another type of histogram is a style plot histogram. To view a density histogram of contour data, use the iTool's histogram feature by selecting Operations Histogram. For information on histogram creation, see Plotting a Histogram.

### Viewing Statistics

To view statistics for contour data, use the iTool's statistics feature by selecting Operations Statistics. For information on viewing statistics, see Displaying Statistics.

IDL Online Help (March 01, 2006)