4.01 Execution Controls: Pause, Resume, Load then Restart, and Zoom.
4.02 Plotting Controls
4.03 Display Controls
4.04 Display Modes
4.05 View Controls

This chapter describes the execution of SEDPAK and the SEDPAK EXEC menu. To run SEDPAK, type "sedpak" at the workstation prompt and the SEDPAK LAUNCH menu is invoked. The SEDPAK EXEC menu (Figure 4.0.1) is activated by pressing the SEDPAK EXEC button on the LAUNCH menu (see the discussion in Section 2.05). It often takes a few moments for the EXEC menu to appear on the computer screen and during the wait the EXEC button should not be pressed again, or more than one EXEC menu will be launched. This may be useful when comparing the output of several SEDPAK data (.db) files, but if only one execution is planned, press the EXEC button on the LAUNCH menu once.

The execution of the SEDPAK program requires SEDPAK data (.db) files to be loaded by selecting Open from the File pull-down menu on the SEDPAK EXEC menu. A dialog for selecting a file for execution will appear as described in Section 2.06 on the File menu. Select a file from the file dialog window and then click OK. The SEDPAK simulation window will appear. Execution of the data (.db) file will begin, with output from the simulation appearing in the SEDPAK SIMULATION window. When the Exec menu is brought up for the first time the simulation will display a new plot for every time step. Pressing Cancel will close the Open a File dialog without executing the file.

The SEDPAK EXEC menu controls the manner in which the SEDPAK output is viewed. For instance, on the Execution Controls portion of the EXEC menu, commands are available for pausing (Pause), resuming (Resume), loading and restarting (Load then Restart), and zooming (Zoom). The Plotting Controls options manage when the simulation output is updated. Display Controls manages the number of surface lines that appear on simulation output. Display Modes controls the type of output that is displayed and in which window. These displays emphasize different geological features, e.g. basin geometry, (including Basin-Lithologic Ratio, Basin-Facies, Basin-Sequence and Basin-Maturity), time/distance plots (Chronostratigraphy ), and well history plots for specific well locations (Time-Depth-Elevation, Burial History, Geohistory, and Maturation History). The various modes and options can only be selected while the simulation is paused with the Pause button.

Items on the SEDPAK EXEC menu bar include File (see Section 2.06), Option (see Section 2.07), View (see Section 4.05), Examine (see Section 2.08) and Help (see Section 2.09). When File is selected from the SEDPAK EXEC menu, a pull-down menu is accessed with the options Open, Pause, Resume, Load then Restart, Print Selection, Surface Snapshot, Close Simulation, and Quit.

• € Open provides the means to search the system's directories for a data (.db) file and load it for execution.
• € Pause enables the simulation run to be paused,
• € Resume enables the execution to be continued.
• € Load then Restart enables the SEDPAK execution to load the same data (.db) file and execute it. This option is useful if a file has been modified (Chapter 3) and needs to be executed again.
• € Surface Snapshot creates a surface (.sur) file of the current simulation surfaces, as seen in the SEDPAK Simulation window. This surface (.sur) file can be used: to Overlay on images (gif files) of the basin stratigraphy and seismic cross sections (see Section 2.17); be manipulated to form unconformities; and generate sediment layers for Out of plane Deposition (see Section 3.20).
• € Print Selection sends the contents of the current SEDPAK SIMULATION window to your printer (see Section 2.06).
• € Close Simulation ends the current simulation, by closing the SEDPAK SIMULATION window while leaving the SEDPAK EXEC menu active.
• € Quit terminates the execution of the simulation and the SEDPAK EXEC menu is removed.
  
  

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4.01 Execution Controls: Pause, Resume, Load then Restart, and Zoom.

During execution of the SEDPAK program, Pause has to be selected on the SEDPAK EXEC menu before any other features of the SEDPAK EXEC menu can be accessed. Resume is selected to continue the execution of the simulation. At times it may be desirable to rerun the execution of SEDPAK with the same data (.db) file, particularly when that file has been updated with the EDIT menu and saved. Load then Restart may be selected for that purpose.

All Display Modes can be zoomed. To zoom in on a specific area within the simulation window, select Zoom to invoke the Zoom dialog (Figure 4.1.1). Zooming can be then accomplished with the mouse or by coordinates:

Zooming with the Mouse:
The area to be zoomed is "boxed" by positioning the mouse pointer at any corner of the area to be zoomed, dragging the mouse across the designated the area (the mouse button must remain pressed) and then releasing the mouse button. The display will then zoom in (Figure 4.1.2). An area may be zoomed multiple times to the width of one column in the x-direction and to a distance of one foot or meter in the y-direction. To zoom back out again, select Unzoom, and SEDPAK will zoom back out to the previous image. If Unzoom All is selected, the view will return to the full screen image.

Zooming with coordinates:
Press the Enter Coords button in either the Top or Bottom window of the Zoom dialog which in turn activates the Zoom coordinates dialog (Figure 4.1.3). Numerical values are entered for the Left, Right, Top, and Bottom. The area selected is zoomed on the SEDPAK Simulation window to the coordinates selected and the Zoom coordinate dialog box remains open, when Apply is pressed.

The four cursor arrows on the Zoom dialog enable the rectangular zoom area to be scrolled vertically or horizontally, with a 50% overlap between successive displays. Cancel deactivates zooming and removes the Zoom dialog.

Zooming takes several forms. The different kinds of zoom, how they are used and their output are described below:

Zoom type	Output
Single Window Zoom area is selected on simulation window. Unzoom retrieves the zoom history. Unzoom All returns display to original simulation window.	Area selected is zoomed, and displayed on simulation window.
Inset View - Single Window Inset View button pressed on the Zoom dialog, two windows are activated, if Inset View button is deactivated, the window reverts to the single zoomed view.	Upper window of the simulation displays a full display with the zoomed area outlined by a rectangle (Figure 4.1.4). Each zoom in the upper window reinitiates the zoom process.
Unzoom retrieves the zoom history. Unzoom All returns original blank window.	Lower window displays the zoomed area, multiple zooms can be made in this lower window which are outlined on the upper window, as in Figure 4.1.4.
Synchronous Zoom - Two Windows Select a display for the Top and Bottom windows (see Section 4.4). Press Synchronize on the Zoom dialog. Select area to be zoomed on either of the two windows. Only the upper window controls on the dialog can be used with Synchronize. If Synchronize is deactivated, the two windows may be zoomed independently, as outlined below. Unzoom retrieves the zoom history. Unzoom All returns display to original simulation window.	Synchronous zooming can be done in two window combinations activated from Display Modes that have the same dimensions; e.g. basin cross sections, or geohistory and burial history plots. Both the Top and Bottom windows are zoomed synchronously (Figure 4.1.5).
Independent Zoom - Two Windows Select a display for the Top and Bottom windows (see Section 4.4). Synchronize inactive (grey) on the Zoom dialog. Areas to be zoomed are selected independently, on either of the two windows. Unzoom retrieves the zoom history for the window selected. Unzoom All returns display to original simulation window for window selected.	The area selected is zoomed and displayed in the chosen simulation window. Both the Top and Bottom windows are zoomed independently of one another. The same display can be zoomed in two separate location and viewed together on the separate windows of this mode.

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4.02 Plotting Controls

Plotting Controls on the SEDPAK EXEC menu (Figure 4.0.1) manages the intervals at which SEDPAK draws new surfaces. To activate the Plotting Controls, the simulation should be paused and the radio button for the desired time step configuration should be pressed (it will now be marked in red). The configurations are:

Plot every time step	Plot every time step displays output for each time step.
Plot time boundaries	Plot time boundaries displays the simulation output at the times specified in the Time Boundaries data sheet from the SEDPAK EDIT menu (see Section 3.18).
Plot every nth time step	Plot every nth time step activates the dialog window on the EXEC menu (Figure 4.0.1) For entering the nth time step for displaying output. To activate the typed value the Apply button should be pressed. If n is equal to the number of time steps, only final plot made.

The default for Plotting Controls is Plot every time step.

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4.03 Display Controls

Display Controls on the SEDPAK EXEC (Figure 4.0.1) menu controls the display of time or Surface Lines on the SEDPAK Simulation window. The boundaries of the sediment geometries for the designated time steps are outlined by thin black lines. The user can display every nth time line by typing this number in the type-in box and activating Apply. When the button is grey, all of the time boundaries are turned off except for the initial basin surface, the time lines that coincide with the Time Boundaries designated in the data (.db) file (see Section 3.18), and the surface of the last sedimentary layer (Figure 4.3.1). This is also accomplished by setting the number of time lines to 0. If only the initial basin surface and the surface of the last sedimentary layer are desired, set the number of surfaces to the number of time steps in the simulation. The default displays every time line, and the button is red.

Chapter 4, Section 04

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