Introduction
There are a few concepts in Geocap which are important to understand in order to work efficiently with the software. The main concepts are Actors, Schemas, Geodetic settings and different commands. These concepts will be explained in this section. In addition to this section also talks about toolbars, color tables and keyboard short cuts.
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Create an item command- Go to 1. Maritime lines / 60M lines and select one of the datasets.
- In the Toolbox right click Display and select Edit.
- Set Line Width to 4.
- Check User defined Color and set the color to Red.
- Click the
 icon in the upper right corner of the menu and observe that the command appears in the Toolbox under Item Commands. - Click Cancel (the settings will not be saved for the schema command).
- Right click the Display command under Item Commands and select Rename.
- Rename it to Display in red and click OK.
- Select the different lines in 1. Maritime lines / 60M lines and observe that the new Display in red command is only available for the one dataset.
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Get familiar with schema commands- Right click the different datasets in the project, and see how the right click menu changes from schema to schema.
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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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Color Tables
Geocap comes with a set of predefined color tables which can be seen in the toolbox. These color tables are of course customizable, or you can create your own color table from scratch. By default the color tables shown in the lower right corner of Geocap will be used to display a dataset. You can change these color tables by selecting one of them, right-click another color table in the toolbox and select Activate. You can also use drag and drop to drag a color table from the toolbox and drop it onto a displayed dataset in the graphical window.
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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. If this dataset is removed from workspace, there is no sticky surface anymore.
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Display data on the Sticky Surface- Right-click on a Seabed surface dataset and select Set as sticky surface
- Select a line, e.g. 1. Maritime lines > 200M lines > atlantis + 200M in your project.
- In the Toolbox under Commands > Schema commands right-click and Edit on the Display command.
- Check the Glue to Sticky Surface and press Execute to do a line display.
- Uncheck the Glue to Sticky Surface and press Execute again and observe the difference.
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