Menu | View > Change Coordinate Reference System |
Tool |
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Status bar | [Coordinate reference system] |
Menu | View > Change Coordinate Reference System |
Tool |
|
Status bar | [Coordinate reference system] |
Select a coordinate reference system for the current data.
Coordinate reference systems represent an area of the globe on a flat surface. Projecting features of a spherical earth onto a flat map usually causes some or all of the features to be distorted. For example, the features may be stretched in one direction, or they may appear relatively larger than features in other areas of the map. Selecting a projection appropriate for the area being viewed helps to minimize the distortion.
Coordinate reference systems (CRS) are based on entries in a set of support files, which are user configurable. By default, CARIS applications are setup with the projections and datums defined by EPSG, a global standard, as well as a number of custom projections and datums that are known to have been used by organizations around the world. It is possible to add custom entries; see the Support Files Guide for more information. The CRS dialogs also store recently used values and support setting favourites; see below for more information.
Related commands: Use Coordinate Reference System
Procedure
1. Select the Change Coordinate Reference System command.
The Select Coordinate Reference System dialog box is displayed.
The Select Coordinate Reference System dialog box contains these tabs:
Tab | Displays |
Current | The coordinate reference system of the currently open data. |
Favourites | Any coordinate reference system that has been marked as a favourite. |
Recent | Recently used coordinate reference systems. |
Search Results | Coordinate reference systems that match the search criteria. |
To search for coordinate reference systems:
1. Type a string in the search box.
Strings are found if they appear in the identifier, the reference system name, or the area of use. Press <ESC> to clear the search box.
Results are displayed in the Search Results tab.
Each coordinate reference system has two icons displayed on the right side of the dialog box. These icons are displayed automatically in some tabs, or when you click on or hover over a coordinate reference system in other tabs.
Command | Icon | Description |
Favourite |
| Identify favourite or frequently used reference systems. 1. Locate the system you want. If this is the current or a recently-used system, you could find it in the appropriate tabs. Otherwise you can search for it. 2. Click on the Favourite icon. The icon turn yellow. The reference system will be displayed in the Favourites tab. Click the icon a second time to remove the system from the favourites. |
Info |
| Displays information about the system. 1. Locate the system you want. 2. Select it or hover over it. The Info icon becomes visible. If you hover over the icon, a tooltip displays information about the coordinate reference system. If you click on the icon, the advanced Coordinate Reference System dialog box is displayed. See Advanced Coordinate Reference System |
Advanced Coordinate Reference System
The Coordinate Reference System dialog box displays detailed information on the selected reference system, including names, major components, and values. This information is read-only and cannot be modified.
This dialog box contains these tabs:
Tab | Description |
Details | This dialog box displays detailed information on the selected reference system, including names, major components, and values. This information cannot be modified. The nodes of the coordinate reference system are displayed in the list on the left. 1. Click on a node. Node properties are displayed on the right. |
WKT | This tab displays the coordinate reference system as a WKT (Well Known Text) string. You can select and copy this string using the pop-up menu. |
