Page Comparison

Introduction

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Clear the display window by clicking the Image Removed X button in the main toolbar.
In the folder 2. Seabed / 2500 meter Isobath right click atlantis's 2500 meter isobath and select Edit points and lines...
Click the Display button near the bottom of the Edit points and lines dialogue box in order to see the isobaths.
Select the Delete tab.
Inside the Delete tab, select By closed line tab.
Click the Start button, then digitize a closed polygon around the part you want to delete by clicking with the left mouse button.
Click Connect to Start and End in order to connect the last digitized point with the start point.
Click Delete points INSIDE. The part inside the closed polygon is now deleted.
Change the drop down menu from Save as an extra copy to Overwrite input dataset.
In order to store the changes in the Edit points and lines menu, click the Execute button at the bottom.
Click Cancel to close the Edit points and Lines menu.
Clear the display window by clicking the Image Removed X button in the main toolbar.
In the folder 2. Seabed / 2500 meter Isobath right click atlantis's 2500 meter isobath and select the Display and confirm that the unwanted parts have been removed.
The Edit points and lines command stored the original 2500m isobath as a backup. Right click this dataset and select Delete.
Click OK

Sometimes when editing a dataset the geodetic settings are lost and we need to set the geodetic metadata for the dataset.

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In the folder 2. Seabed / 2500 meter Isobath right click atlantis's 2500 meter isobath and select Properties.
Click the Geodetics tab
Click Set geodetic meta data
Select World Geodetic System 1984 and Mercator (all values 0)
Click OK
Click Close

We can now generate the last constraint line.

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In the folder 2. Seabed / 2500 meter Isobath right click atlantis's 2500 meter isobath and select Generate 100M Line.
Keep the default settings and click Execute.
The new line should now be available under 1. Maritime Lines / 100M Lines. Click OK.
Click OK to close the menu.
In the folder 1. Maritime Lines / 100M Lines display atlantis's 2500 meter isobath + 100M.

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Display the atlantis seabed surface dataset in 2. Seabed / Grids and zoom in to the East Sea area.
Right click the atlantis seabed surface dataset again and select the command Generate Bathymetric Profile. A menu will appear.
Click the Start button, then digitize the first point of the profile by clicking with the left mouse button where you want the profile to start on the seafloor in the display window.
Digitize the last point of the bathymetric profile by clicking with the left mouse button where you want the profile to stop on the seafloor.
Click Stop
You will be prompted with a dialog asking you to provide a name for the profile. Keep the default name and click OK.
Geocap will notify you where the resulting Bathymetric profile has been stored in the project. Click OK.
Locate the new profile in 2. Seabed / Bathymetric Profiles. This is the default position of bathymetric profiles.
Display the profile.

Tip
It is possible to generate a bathymetric profile following a specific path or feature by digitizing more than two points.

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Repeat the steps in the previous exercise and generate a few more profiles in the same area. You should have 3-5 profiles in the area.

We should now group our bathymetric profiles into a folder and give them a proper name.

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