Coordinate Reference System
Overview
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
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 as and other geodetic computations.
To add a published coordinate reference system:
Open the project in Trimble Connect for Browser.
Go to the Settings › Project Details page.
Click on the Edit button under the Coordinate Reference System section.
Click Choose published coordinate system.
A dropdown menu will appear.You can scroll through the available systems or type to filter the list.
Select the desired system.
Click Save changes (located at the top of the page).
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 add a published coordinate reference system:
Open the project in Trimble Connect for Browser.
Go to the Settings › Project Details page.
Click on the Edit button under the Coordinate Reference System section.
Click Upload calibration file.
The native file picker will appear.Select your calibration file.
Click Save changes (located at the top of the page).
Remove a CRS
If your project does not need a CRS after one has been added you can choose to remove it.
To remove a coordinate reference system:
Open the project in Trimble Connect for Browser.
Go to the Settings › Project Details page.
Click on the Edit button under the Coordinate Reference System section.
Click Remove coordinate system.
Click Save changes (located at the top of the page).
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 clicking 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
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