The user can define a 2-D Gaussian function which is added to the data within the current ROI. The user defines the peak centre, the maximum intensity, the orientation, and the standard deviation size in pixels of the two axes. (The peak intensity may be negative to allow peaks to be subtracted.)
Here is an example of the program dialogue:
Main menu: ENTER COMMAND [INPUT DATA]:gauss PEAK CENTRE X-COORDINATE [250.000]: PEAK CENTRE Y-COORDINATE [250.000]: PEAK MAXIMUM INTENSITY [1000.00]: ORIENTATION OF FIRST AXIS (Range: -360.000 to 360.000) [0.0]:30 STANDARD DEVIATION WIDTH FOR FIRST AXIS (Range: 0.0 to 1.700E+38) [50.0000]: STANDARD DEVIATION WIDTH FOR SECOND AXIS (Range: 0.0 to 1.700E+38) [25.0000]: