GGU-LABPERM: "Preferences" menu item

After selecting this menu item a dialog box appears, in which you can edit preferences for graphical presentation.

• "Graph visualisation" group box:
  By activating the appropriate check boxes the measured data can be visualised as a permeability graph, provided with markers at given intervals or directly attached to the measured data. Each permeability graph uses a different marker, thus ensuring simple differentiation between several permeability graphs, even on monochrome printouts. Instead of markers, the graphs can also be labelled at their start and finish with the test numbers they represent. The marker size or font size of the test numbers is user-defined.

• "Smoothing out method" group box
  You can select from four smoothing out methods: A message box provides information on the type of smoothing:
  No smoothing = no smoothing
  Method 1 = strict Bezier spline
  Method 2 = "loose" Bezier spline
  Method 3 = rational spline interpolation
  Very rounded graphs are generated using smoothing out methods 2 and 3. Deviations between the measured data and the permeability graphs are visible when the measured test data is marked.
  For method 3, smoothing can be influenced with the "Control parameter". The value of the control parameter may only be in the range between > -1.0 and < 1000.

• "Time axis" group box
  Enter the required time format (seconds, minutes, hours or days) for permeability graph visualisation.

• "User-defined diagram axes" button
  The program automatically selects a sensible axes scale for the graphical visualisation of the permeability graphs. If the "User-defined diagram axes" button is clicked a dialog box opens in which the check box "Use the following axes values" must be activated. The required minimum and maximum values for time and permeability can then be entered.