| iTool User's Guide: Common Operations |

## Additional Operations

The Histogram, Statistics, and Console tools display additional information about data displayed in the iTool windows, and about operations performed with the iTools.

### Plotting a Histogram

Histogram displays a histogram plot of the data currently selected in the iTool window. The Histogram plot appears in a separate iPlot window.

Figure 7-11: Histogram Plot

Figure 7-11: Histogram Plot

To display a histogram plot:

1. Select an object or group of objects in the iTool window.

2. Select Operations Histogram.

### Displaying Statistics

The Statistics dialog displays all available statistical information pertaining to the object or objects currently selected in the iTool window.

To display the Statistics dialog:

1. Select an object or a group of objects in the iTools window.

2. Select Operations Statistics. The Statistics window is displayed.

Figure 7-12: The iTools Statistics Window

Figure 7-12: The iTools Statistics Window

The information displayed in the Statistics window varies depending upon the type of objects selected.

- For scalars, the name of the variable and its value are displayed in the Statistics window.

- For arrays, the following information is displayed:

- Name

- Maximum and location

- Dimensions

- Standard deviation

- Mean

- Variance

- Absolute deviation

- Total

- Skewness

- Minimum & location

- Kurtosis - 3

The information in the Statistics window can be edited (by selecting Edit), printed, or saved as a file.

- On Windows platforms, the standard Windows editing context menu containing Cut, Copy, Paste and Delete commands can be displayed by right-clicking anywhere in the Statistics window.

- On UNIX platforms, use the left or right mouse buttons to cut, copy or paste.

To save the text as an ASCII file:

1. Select File Save As.

2. Enter a filename. If the filename already exists, you will be asked if you want to replace the file.

3. Select Cancel to return to the Statistics window without saving the file.

To print the text, select File Print. The standard Windows or Motif printer dialog is displayed.

To close the Statistics window, select File Close.

IDL Online Help (March 01, 2006)