2D Slicers

In a standard setup, there are three slicer widgets shown, each shows an axis-aligned cut through the loaded dataset, along a specified and changeable slice number. Use the scrollbar on the right or the spin box on the upper left to change the slice currently shown.

Settings

images/slicer-settings.png

The yellow "S" button in the toolbar provides access to slicer settings (which are applied to the 3 axis-aligned slicer widgets), such as:

• "Link Views" (default: false) - whether moving the mouse in the slicer should change the slicing plane in the other slice views. The current mouse position is also indicated in the other slicers, if "Show Position" (see below) is checked.
• "Show Position" (default: true) - whether the position in other slicers should be indicated with a green rectangle.
• "Show Isolines" (default: false) - whether a number of isolines should be generated and shown (see also "Number of Isolines", "Min Isovalue", "Max Isovalue")
• "Linear Interpolation (default: true) - whether rendering should use linear interploation (less block artefacts, but picture can look blurry)
• "Number of Isolines" (default: 5) - how many iso lines should be shown if that feature is turned on (see "Show Isolines).
• "Min Isovalue" (default: 20000) - minimum iso value for isolines feature (see "Show Isolines")
• "Max Isovalue" (default: 40000) - maximum iso value for isolines feature (see "Show Isolines")
• "Snake Slices"
• "Link MDIs" (default: false) - whether to highlight the position in the current slicer also in the other open files. If this option is selected, and you move the mouse in the slicer widget, the current position will be highlighted in all other open windows, and in the tooltip you will see the data values of the other windows.

Key Commands

When the slicer is highlighted (click on it once to highlight it), these key commands are available:

• 'r' resets the view
• 'm' enables a measurement mode. The position under the mouse cursor when pressing 'm' is considered as the starting point. Any further mouse movement causes a line and a circle to be drawn to the current mouse curser, and the tooltip displays the distance from the starting point to the current location. Pressing the Escape key terminates the measurement mode.