Introduction
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Change the default display for seabed surfacesThe seabed surfaces has a default command "Map sea" or something similar. - Click on the Seabed datasets in the 2.Seabed / Grids folder.
- In the Toolbox right-click another command (i.e LOD Grid Display) and select Set as default command
- Tick the checkbox next to the Seabed dataset and notice that the new command is executed.
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Geodetic settings
In Geocap it is the responsibility of the user to secure that data have the correct Datum and Coordinate system, also called a Projection or Geodetic settings. Datasets with the same geographical location but with different coordinate system will not be displayed in the same location in the graphical window. Thus, you will need to convert one of the datasets to the other coordinate system.
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View the geodetic settings of a dataset- Right click any dataset in your project and click Properties
- Click on the Geodetics tab
- Observe the Geodetic settings of the dataset
- Read the warning message
- Click Close
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Change the color table on a seabed surfaceVisualize a seabed surface Click on the Color Tables tab in the Toolbox Click, drag and drop one of the color tables on the seabed surface
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Sticky Surface
Geocap has a concept where any surface can be set to be sticky. When a surface is sticky, data like points, lines or images may be displayed onto that surface. This is mainly done by re-sampling lines and displaying them a little bit above the sticky surface. When a surface is activated (or set) as a sticky surface, it is copied to workspace under the name sticky_surface.
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| title | Exercise |
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Display data on the Sticky Surface- Right-click on a Seabed surface dataset and select
 Image Removed Set as sticky surface - Select a line, e.g. 1. Maritime lines > 200M lines > Baseline_Atlantis + 200M in your project.
- In the Toolbox under Commands > Schema commands right-click Display and click Edit.
- Check the Glue to Sticky Surface and press Execute.
- Investigate the line display
- Uncheck the Glue to Sticky Surface and press Execute again and observe the difference.
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Note that points and lines displayed onto a sticky surface are displayed without their original z-values, and this may not be what you intend to do when displaying a foot of slope point or a bathymetric line. |
Toolbar
| Icons | Description of Main Toolbar |
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 Image Added | Will cancel any mouse action that is started but is regretted and should be ended without any operation. |
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 Image Added | Start a mouse action that when clicked on a graphical object will delete that object. |
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 Image Added |
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| Start a mouse action that when clicked on a graphical object can |
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| parameters for that object. |
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| parameters are: Opacity, Reflection, Diffusion, Ambience. |
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 Image Added | Start a mouse action where the user is supposed to click on a surface that is map |
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| values. The mapping range of the scalar values according to the color table can then be adjusted. |
 Image Added |
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| Start a mouse action that when clicked on a graphical object will highlight the corresponding data object in the project. |
 Image Added |
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| Start a mouse action where the user can click and draw a rectangle around displayed data and Geocap will list all dataset names and locations. |
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 Image Added | Will delete all graphics in the current viewport or window (if the window holds only one viewport). The corresponding references to actors in the project are deleted. Frequently used in free interactive work. |
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 Image Added | Will delete the last graphical object (also called and actor) that is displayed. Frequently used to erase a graphical object that shall be removed. Note: |
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| Redisplaying data from the project using the same command will erase the previous corresponding actor. |
 Image Added |
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| Will set the graphical window in 2D mode; i.e. |
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| is allowed. The view direction (x, y or z) depends on the corresponding setting. In 2D mode the left button on the mouse is used for immediate cursor response for instance in digitizing |
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 Image Added | Will set the graphical window in 3D mode; pan, zoom |
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| is enabled. The default 3D mode renders |
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| in perspective view; i.e. parallel lines are not parallel on the screen, but shows a perspective. |
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 Image Added | Will turn the z direction of the graphical window upwards; i.e. the positive direction of the z axis points upwards. |
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 Image Added | Will turn the z direction of the graphical window downwards; i.e. the positive direction of the z axis points downwards. This is the default case because most surfaces are below the zero level, but still have positive z values. |
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 Image Added | Will show the graphical window as a frame box. It is important to use this icon to check the graphical window or whenever some display comes out weird if the display algorithm uses the graphical window to set display parameters. |
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 Image Added |
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| Will draw default axes for all visible axes directions. No tick marks are display for simplicity, but the exact location of an annotation position starts at the beginning of the annotation. |
 Image Added |
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| which is a convenient menu for navigating a 3D graphical scene. To some (especially newbies) it can be difficult to use the mouse buttons to orientate the graphics. Be aware that rotation is around |
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| which also can be set by pointing the cursor mouse at a any location on a solid object and push |
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 Image Added | Will zoom in towards |
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| the focal point. The graphical window is not changed, although the graphical frame may lie out the visible part of the screen. |
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 Image Added | Will View from above. This icon also contains sub-icons for viewing in other directions. |
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 Image Added |
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| If several windows are created on the |
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| same Tab, this icon connects the selected windows to the same visual camera. Very useful when different surfaces that shall be compared are displayed in separate windows that are connected and show the same under all graphical movements. |
 Image Added |
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| that allows for a quick way to create viewports inside a window. The number and layout of the viewports are determined by just double clicking on the lower right frame in the veiwport menu. If the viewports are connected they can also by used for simultaneously display of surfaces or features that shall be compared. |
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 Image Added | Enables the light source to be moved around in the graphical scene. Will create shadows and highlight features. Usefull for presentation graphics and detailed studies of special structures. |
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 Image Added | Will scale the graphical scene with all its actor up or down. Very important for selecting a good view. The scaling should also preferable be set in |
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| so that the preferred view comes up when loading a project. |
 Image Added |
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| Will show up a 2D compass in upper right that follows the rotation of the graphical window. Another click on the icon will remove the compass. |
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| borderColor | #404040 |
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| bgColor | #F0F0F0 |
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| borderStyle | dashed |
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| title | Exercise |
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- Try out the different tools.
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