Introduction
Geocap is a software for mapping and modeling geoscientific data, designed with focus on interactivity and flexible control of visualization and manipulation. Geocap is operated through projects. The project "holds" the data in a folder-like structure, similar to Windows "File Explorer". All datasets are "children" of either a folder or another dataset. Geocap offers different project templates, giving you a pre-defined folder structure that fits your workflow for a specific type of work. In this tutorial collection we are going to use the Shelf/UNCLOS project template.
Data visualization and manipulation is operated through commands. Commands can be used to display datasets in the graphics window, manipulate existing datasets or to generate new datasets. The Geocap Shelf module offers a range of commands with tailor made article 76 functionality.These commands are available in a Toolbox or if you right click a dataset or folder in the project.
All the project data is visualized in the graphics window and by using the mouse it is possible to pan, zoom, rotate, spin, scale z-axis and so on.
This section will guide you through the basics of opening a project, explore and display the project data and navigate in the graphics window.
Exercises
Starting Geocap
Start Geocap
On your start menu click Start > All programs > Geocap > Geocap 7.x.x - 64 > Geocap 7.x.x - 64
Initial Setup
Geocap comes with a range of settings which can modified to make it easier to work with. One of these settings is the working directory which is the folder Geocap will open every time you browse for something. We will now set this directory and we will also turn on auto save.
Set working directory and auto save
- Click Tools > Options
- Click the browse icon for the Working Directory.
- Select the folder Geocap1 and click Select folder
- Click on Projects
- Check the box Automatically save all projects at regular time intervals
- Set the Time interval to 5
- Click OK
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Geocap Project
The Atlantis project is built using the UNCLOS project template. This template consists of four main top level folders; Maritime lines, Seabed, Sediment data and Outer limit. The maritime lines folder will hold all the data that has no reference to depth or is located at the sea surface. The Seabed folder will hold all the data located at the seabed, like bathymetric profiles, foot of slope points and so on. The Sediment data folder will hold all the subsurface data like seismic, interpretations, velocities, sediment profiles etc. The Outer limit folder will hold all datasets which is used to construct the outer limit. We are now going to open the Atlantis project and look closer at this project structure.
Open the Atlantis project
- Click File > Open > Project
- Browse to the location of the Atlantis project (Geocap1/Projects/Atlantis_3/db)
- Select the Atlantis.db file and click Open.
Tip
Next time you can open the project by going to File > Recent Projects.
Pressing the small triangles (or '+' in other Windows versions) to the left of a folder will display the folder's contents. Datasets and folders are organized very similarly to a file tree structure. A folder can contain other folders, or datasets.
In the next exercise we are going to explore how the Atlantis project is structured. Taking notice of how folders and datasets are organized. Datasets and folders can be cut, copied, pasted, renamed and deleted. This is performed from the popup menu which appears when right-clicking a dataset. The right click popup menu also contains commands which may be executed on the datasets.
Explore the project folder structure
- Expand the different folders and observe the sub folders and datasets
- Right click on folders and datasets and look at the right-click menus.
Note that there are two "modes" of the project view. Switch between these two by clicking on the tabs; List and Tree. List view sorts folder content into a separate window, while Tree view sorts everything into the tree itself.
A Geocap project is stored in a folder on your computer. The project consist of a ".db" file, which contains information about the project tree, and several files which contain the data sets. You should let Geocap manage the files in the project folder and should not store other files in this folder.
If you want to make a backup of your projects, or if you want to exchange Geocap projects with other Geocap users you may zip the project folder with all the underlaying datasets into one file. This is convenient for sending e.g. to support@geocap.no.
Displaying Data
By right clicking a dataset a range of different visualization commands is made available. For each type of dataset Geocap will have a default command. This is the command which will be used when ticking the checkbox next to a dataset. We are now going to display the different datasets in the project using the default command.
Display data
- In the folder 2. Seabed / Grids tick the checkbox next to the atlantis seabed surface.
- Right click the atlantis seabed surface and select Zoom to Data. This will make the display window center the graphics window around the dataset.
- In the folder 1. Maritime Lines / Coast lines tick the checkbox next to The Kingdom Of Atlantis coast line.
- In the folder 1. Maritime Lines / Base lines tick the checkbox next to Baseline_Atlantis base line.
- In the folder 1. Maritime Lines / 12 lines tick the checkbox next to Baseline_Atlantis + 12M limit line.
- In the folder 2. Seabed / Bathymetric Profiles / North Sea tick the checkbox next to all the bathymetric profiles
Note that by checking and unchecking the first level folder 1. Maritime Lines, or 2. Seabed all datasets displayed under this folder are shown and hidden.
Navigating in the 3D window
Now that we have displayed some of our data we can start navigating around the Atlantis continental shelf. Geocap is best operated using a three-button mouse with a wheel, see picture below. A two-button mouse or using the Touch-pad is possible but not recommended. Navigating in the 3D graphics window is done by pressing one of the mouse buttons while the cursor is in the graphics window, and moving the mouse while keeping the button pressed.
- Rotate - Press left mouse button + move
- Pan - Press middle mouse button (wheel) + move or Shift + left mouse button + move
- Zoom - Press right mouse button + move
- Scale Z - Scroll mouse wheel
- Spin - Ctrl + press left mouse button + move
The mouse buttons
Navigate using the mouse
- Zoom in close to one of the bathymetric profiles displayed by press right mouse button and moving the mouse upwards.
- Pan along the seabed surface by pressing the middle mouse button (wheel) and moving the mouse in any direction.
- Zoom out again by press right mouse button and moving the mouse downwards.
- Rotate the displayed data by pressing the left mouse button and moving the mouse.
- Spin the data by holding down Ctrl on your keyboard, pressing the left mouse button and moving the mouse.
- Now try to increase the z-scale by scrolling the mouse wheel upwards.
Move around the 3D model an practice these elements for a few minutes.
Tip
The focal point is the center of the display and the point of rotation. Change the focal point by positioning the mouse cursor on a desired point in the display window and press the X key on the keyboard.