Coordinate system requirements

To perform geographic transformations (for example, NTv2, GEOCON, and NADCON5) and vertical transformations (for example, EGM and VERTCON) requires additional coordinate system files to properly transform and render features.

The following are the additional coordinate system files that you can use on ArcGIS Server machines:

• ArcGIS Coordinate Systems Data—Install ArcGIS Coordinate Systems Data on all machines in stand-alone and federated ArcGIS GIS Server sites, including the hosting server site.

  Note:

  When you upgrade ArcGIS Server to 11.2, you must uninstall the previous version of ArcGIS Coordinate Systems Data before you install the 11.2 version of ArcGIS Coordinate System Data.

• Third-party transformation grids—You may need to obtain transformation grids from the appropriate third-party providers and place them on machines in stand-alone and federated ArcGIS GIS Server sites, including the hosting server site.

Install ArcGIS Coordinate Systems Data

The ArcGIS Coordinate Systems Data component is required if you will perform geographic or vertical transformations.

Follow the steps below to install ArcGIS Coordinate Systems Data.

The ArcGIS Coordinate Systems Data must be run in a graphical user interface (GUI) mode.

1. Download the ArcGIS Coordinate Systems Data installation from My Esri.

   The file name is ArcGIS_Coordinate_Systems_Data_Linux_<release_part#>.tar.gz.

2. Place the downloaded file on each machine in the GIS Server sites in your ArcGIS Enterprise deployment.

   You must use the login that originally installed ArcGIS Server.

3. Extract the installation file from the .tar.gz file.
4. Run the extracted Setup file to launch the installation wizard.

   ./Setup

5. Read the message in the Introduction pane of the ArcGIS Coordinate Systems Data Setup wizard and click Next.
6. Review the license agreement and choose an option:
   • If you agree to the terms, click the option to accept the agreement and click Next.
   • If you do not agree to the terms, click Cancel to exit the installation.
7. Specify the directory to which the coordinate systems data will be installed, or use the default installation directory. Click Next to proceed.

   By default, the files are installed to the home directory of the user running the installation.

8. Optionally, select the grids to exclude from the installation, and click Next.

   By default, all coordinate system grids are installed.

9. Review the installation summary.
   • If you need to change any of the installation settings, click Previous and change the settings.
   • If the installation settings are correct, click Install.
10. When the installation process completes, click Done to close the ArcGIS Coordinate Systems Data Setup wizard.

Uninstall ArcGIS Coordinate Systems Data

Follow these steps to uninstall ArcGIS Coordinate Systems Data:

1. Sign in to each machine where ArcGIS Coordinate Systems Data is installed.

   You must use the login that originally installed ArcGIS Server.

2. Change directories to the ArcGIS Coordinate Systems Data installation directory.

   If you used the default location, this is the /arcgis/coordinatesystemsdata directory in your home directory.

3. Run ./uninstall_CoordinateSystemsData to launch the Uninstall ArcGIS Coordinate Systems Data wizard.
4. Click Uninstall on the Uninstall ArcGIS Coordinate Systems Data wizard.
5. When the uninstallation process completes, click Done to close the Uninstall ArcGIS Coordinate Systems Data wizard.

Add third-party transformation grids

For some grid-based geographic and vertical transformations, ArcGIS Server includes their definitions but does not distribute the grid files due to license restrictions. You must obtain these grid files directly from their third-party provider or government agency. In some cases, you may need to purchase the grid files from their provider.

Once you obtain the grid files you require and you have installed ArcGIS Coordinate Systems Data on each machine in the ArcGIS Server site, create subfolders in the coordinatesystemsdata\pedata directory on each machine in the site. Sort files into folders by transformation type, region, country, and transformation method name. For example, an NTv2 file should be added into a ...\pedata\geographic\<your_region>\<your_country>\ntv2 subfolder and a geoid model can be added to a ...\pedata\vertical\<your_region>\<your_country>\geoid subfolder. For detailed instructions, contact your local distributor.