Coordinate Reference System

Some projects may require a coordinate reference system to be defined. This is an optional field that can be defined by a Project Administrator.

Requirements

  • Coordinate reference systems can be added by selecting a published CRS or by uploading a calibration file.
  • Supported file types for calibration files are .jxl, .dc, and .cal.

Coordinate Reference System Properties

If you want to check the properties that your CRS file or selected system uses, you can view the properties by selecting View CRS Properties (listed below the local or published CRS name).

Properties:
  • Projection:Zone name, Zone type
  • Shift grid
  • Datum
  • Geoid model: Name, File name
  • H adjust
  • V adjust

Refer to the following sections for detailed information about adding, removing, and coordinating a coordinate reference system.

Add a Published Coordinate Reference System

The published coordinate reference system dropdown is populated from the Trimble Geodetic Library.

The Trimble Geodetic Library (TGL) is a set of software libraries commonly used across Trimble to transform geodetic coordinates (latitude, longitude, height) into plane coordinates and elevation (north, east, elevation), as well as to perform time dependent datum transformations and other geodetic computations.

To add a published coordinate reference system:

  1. Sign in to your Connect Browser account using your Trimble ID.
  2. Navigate to Settings > Project Details.
  3. Select Edit button in the Coordinate Reference System section.
  4. Select Choose published coordinate system.
    A dropdown menu will appear. You can scroll through the available systems or type to filter the list.
  5. Select the desired system.
  6. Select Save changes.

Upload a Calibration File

You can add a CRS to your project by uploading a calibration file. Supported file types for calibration files are .jxl, .dc and .cal.

When uploading a calibration file, the file contents are extracted and saved to the project. The actual uploaded file is not stored or saved in the project file directory.

To upload a calibration file:

  1. Sign in to your Connect Browser account using your Trimble ID.
  2. Go to the Settings > Project Details.
  3. Select Edit button in the Coordinate Reference System section.
  4. Select Upload calibration file.
    The native file picker will appear.
  5. Select your calibration file.
  6. Select Save changes.

Remove a Coordinate Reference System

If your project does not need a CRS after one has been added, you can choose to remove it.

To remove a CRS:
  1. Sign in to your Connect Browser account using your Trimble ID.
  2. Go to Settings > Project Details.
  3. Select Edit button in the Coordinate Reference System section.
  4. Select Remove coordinate system.
  5. Select Save changes.