The Display Information Area

On the bottom left, you find the display information area. For image files, you can click into an image in the big display window and

• the X and Y profiles through the image at the clicked position will be displayed in the corresponding profile windows,

• in the "Display Information" area, the following are displayed:
  • The scan pixel number, where the lower-left corner is [0, 0]. Yes, it's scan pixels and not display pixels (these are different in zoom stages different than 1.0, and possibly when the "True Aspect Ratio" box is checked).

  • The absolute position of that pixel in the microscope in microns. This will be correct in any zoom stage and also with the "True Aspect Ratio" box set.

  • The position of that pixel in microns relative to the scan center. This is mainly to provide a quick measure of distances in the image.

  • The "Data Value" field will show the data value of the pixel clicked. Of course the physical meaning of this depends strongly on which signal type and detector / display you are looking at (see Chap. 9). In the basic cases, it's the photon count rate in kHz.

  • The "Energy" and "Wavelength" fields will display the energy and wavelength of the scan. Obviously, these won't change when you click at different positions in the image.

You can also click into the X profile window, in which case the clicked Y position is kept fixed and you can read the data value or display the Y profile for different X values. Of course, the same works vice versa for the Y profile window.