2.2. Toolbars

2.2.1. OpendTect toolbar

• starts the Survey definition module

• starts the Attribute module 3D

• starts the Attribute module 2D

• starts the 3D output module

• starts the 2D output module

• starts the Volume builder.
  

• starts the Attribute vs. Well crossplot module.
  

• starts the Attribute vs. attribute crossplot module.
  

• starts the Madagascar link

• starts the Generic Mapping Tools user interface


• starts the PDF 3D plugin


• starts the 3D Neural Network* plugin.
  
• starts the 2D Neural Network* plugin.
  
• starts the Common Contour Binning* plugin.

2.2.2. Manage toolbar

• Opens the Seismic cube manager.

• Opens the Horizon manager.

• Opens the Fault manager
  

• Opens the Well manager.

• Opens the Pickset manager.

• Opens the Wavelet manager.

• Opens the Manage Stratigraphy window.
  

• Opens the HorizonCube file management
  

• Opens or creates a new HorizonCube interpretation
  

• Opens the HorizonCube slider
  

• This VMB icon shows semblance window
  

• This VMB icon shows horizon-based vertical update window
  

• This VMB icon picks new trace location

  2.2.3. Graphics toolbar

  The graphics toolbar contains icons to manipulate the scenes (graphics window), below are the available icons within OpendTect.
  
  

  • This icon allows the user to switch the view mode on. In this mode, you can rotate the view and zoom in and out. Tip: in order to evaluate data values, zoom in and switch to interact mode by clicking on the appropriate icon. Move the cursor over the zoomed-in data and watch the returned position (inline, crossline and X,Y,T plus value) in the status line at the bottom of the main window.

  • This icon allows the user to switch the interact mode on. Click on the element that you wish to move. A frame with handles appears around the clicked element. The handles are used to re-size the frame. Clicking and dragging inside the element is the way to move the entire element in the in-plane direction. Tip: For accurate positioning of a data element, use the Position option from the right-hand mouse button pop-up menu in the tree.

  • This icon resets the view to the position that was saved when you pressed the "save home position" icon.

  • This saves the home position that can be recalled with the previous icon.

  • This icon allows the user to reset the view such that all data are visible.

  • This toggles the view to orthographic/perspective view.

  • This icon resets the view in inline direction.

  • This icon allows the user to reset the view in crossline direction.

  • This resets the view in Z-direction.

  • This will reset the view to the North direction.
    

  • This resets the view to North-Z direction.
    

  • Pressing this icon will open the directional lightening dialog box.
    

  • The display rotation axis is used to show/hide the N-E-Z (North-East-Z) orientation arrows. This button can only be used in View mode, but the arrows remain active in both view mode and interact mode.

  • This icon displays or hides the colorbar

  • This icon opens the snapshot window*, so that the user can grab pictures of the scene, window, and/or the desktop.
    (See below for details)

  • This icon sets the selection to polygon or rectangular modes.

  • Displays selected element only. When more than one element is displayed in the tree, one can quickly view a single element and toggle between elements by clicking the different elements in the tree.

  • This is a tool to measure distances by drawing a polygon on an inline/crossline or on a horizon. The tool returns horizontal distance (meters), vertical distance (ms in time survey or meter/feet in depth survey) and the inline or crossline distance respectively. The distance is computed by using input constant velocity.
    
    

  2.2.3.1. Take Snapshots

  It is possible to take different kinds of snapshots in OpendTect. Three options are available: Scene, Window, and Desktop.
  
  
  
  The "scene" option allows the user to grab a particular scene within OpendTect.The COIN 3D library is used, allowing the output picture to have a better resolution than the screen resolution. Every element displayed in the scene will be in the output picture, including the annotations (color bar, orientation etc). Any overlapping windows will be neglected.
  
  You can change the image properties e.g. height, width, resolution etc. If you save the settings, they will appear by default in all sessions next time you grab new snapshots.
  
  
  
  The "Window" option grabs the whole window, including the sidebars. It can be either the main window or any 2D viewer opened when the snapshot button was pressed. The "Desktop" option is similar and will snap the entire user desktop. Both options use the Qt library for grabbing the picture. As a result the output is limited to the actual screen resolution, and overlapping windows will appear on the snapshot.
  
  
  

  2.2.3.2. Directional Lighting

  The directional lighting feature is used to illuminate the objects (displayed data) at a specific inclination (or dip angle) and azimuth. The feature controls the main headlight i.e. the intensity of the camera light and the intensity of the directional light. The dialog shown below is launched by clicking the "Set directional light" button in the "Graphics" toolbar.
  
  
  Directional light Dialog
  
  Apply light to: The directional lighting is independent for each scene, i.e the selected scene will be illuminated. However, the user may select the option All in the drop down list to illuminate all scenes that are currently open.
  
  Azimuth:This slider is used to set the azimuth (in degrees) value of the directional light. It can be any value from 0 to 360 degrees.
  
  Dip: This slider is used to set the dip value (in degrees) of the directional light. The directional dip is limited from 0 to 90 degrees.
  
  Intensity: Sets the percentage of the intensity of the additional directional light. 0% corresponds to total darkness while 100% corresponds to full intensity.
  
  Show polar diagram: Click this button to pop up a new window containing a polar diagram. The azimuth and dip can be visualized using this diagram. This diagram can be used in combination with the sliders of the main dialog in order to position the directional light around the scene.
  
  Camera light intensity: Use this slider to change the percentage of intensity of the camera light or the head light. 0% corresponds to total darkness while 100% corresponds to full intensity.
  
  The directional light dialog updates the scene instantly to reflect the changes made to the properties. If the OK button is clicked, the changes are retained, whereas, the Cancel button rules out all changes.
  
  Polar diagram dialog:
  
  
  
  This is a dialog that displays the polar diagram for setting the azimuth and the dip values of the additional directional light. The location of the pointer (the red dot) determines the properties of the directional light. The pointer can be moved around by using the mouse within the polar diagram. The azimuth value can be read off the circumference of the outermost circle while the dip value is given by the location of the pointer along the radius of the circle.
  
  Similar to the directional light dialog, the changes made to the azimuth and dip are instantly reflected in the selected scene(s).
  

  2.2.4. Tracking toolbar

  The Tracking toolbar contains icons to control tracking of surfaces.
  
  For an introduction on tracking in OpendTect, see how to interpret horizons.
  

  • By clicking this icon, the tracking settings are accessed.
    
    

  • This activates the seed pick mode.

  
  

  • By pressing this icon, the user starts horizon tracking from seeds.

  
  

  • By pressing this icon, all the previously auto-tracked horizons are removed after which they are retracked from seeds only (within the tracking box).

  
  

  • By pressing this icon the tracked horizon will be displayed at current section only

  
  

  • By pressing this icon, the user selects a part of the horizon using polygonal/rectangular option

  
  

  • This icon allows the user to remove the previously selected area within the tracking horizon

  
  

  • With this icon, the user starts auto-tracking a surface within the specified tracking cube.

  
  

  • This will undo/redo the last action.

  
  

  • This icon toggles the tracking cube on/off. Only data within this volume is stored in memory. When the tracking cube is on, it can be re-sized using the green anchors.

  
  

  • This icon displays the QC plane in the direction of the inline. The user can also QC the tracking on a crossline or timeslice .

  
  

  • This selects the data to be displayed on the tracking plane. Only data stored in memory can be selected.

  
  

  • When pressing this icon, the user opens the color bar selection menu.

  
  

  • This icon allows the user to change the transparency of the tracking plane.

  
  

  • The user can move the tracking plane N positions back / N positions forward i.e. towards a lower/higher inline, crossline or time (depth) number. N is the specified step size.

  
  

  • This icon shows the number of positions to move the tracking plane in the direction indicated by the arrows described above.

  2.2.5. Slice position toolbar

  The slice position toolbar is used to move the 3D slices (inline/crossline/timeslice) according to the user-defined steps. The slice position and number of steps are manually entered in the fields. The forward and backward arrows of this toolbar are used to move the selected slice in increasing or decreasing directions. The workflow is very simple. Add an inline in a scene. By default, a blank attribute (inline/crossline/timeslice) is added in the middle of the survey box. Right click on the attribute and add display the seismic data. Select the inline in the tree. Note that the toolbar items will be updated and the arrows will be activated. Update the inline position and the steps in the toolbar. Use the arrows to move the inline position according to the given steps.
  
  
  An inline is selected from the tree and it is moved forward or backward with steps = 1
  
  TIP: While moving the planes, the progress bar appears by default every time when a user moves the plane to display the data. This can be avoided by changing the Look and Feel Settings. Additionally, if the computer memory is sufficient, the seismic volume can be preloaded for displaying it quickly. Use Preload settings to keep a seismic volume in the memory.
  
  

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