The Histogram tool is used to plot a histogram of the voxel values in a loaded data set.
The Histogram tool may be reached via the Tools Menu or by using the keyboard shortcut "Ctrl+Shift+H". See IVS Keyboard Shortcuts for a complete list.
The Histogram Tool is operated via two control panels: Data Controls and File Controls.
| Field | Function |
| Data Set | This pulldown menu allows the selection of the data set to be histogrammed. |
| No. bins | Sets the number of bins into which to divide the data. |
| Min. | Sets the minimum value for which data will be displayed. The Set button automatically loads this field with the minimum value in the object. |
| Max. | Sets the maximum value for which data will be displayed. The Set button automatically loads this field with the maximum value in the object. |
| Button | Function |
| Save PDF | Saves the existing plot into a PDF file. |
| Save Data | Writes the data into a text file. The format is in two columns with the first column representing bin center points (x-axis values) and the second column representing the number of voxels in each bin (y-axis values). |
| Update | Refreshes the histogram plot. Use this button after changing the No. bins, Min., or Max. values. |
| Close | Exits the Histogram Tool. |