Local Offsets allow you to adjust the coordinate system to match local reference points. This is particularly useful when working in areas where a local coordinate system is preferred over a global one. Here are the key functions and steps involved:

1. Define Offset Values:

• Translation Offsets: Adjust the X, Y, and Z coordinates by adding specific values to align the local coordinate system with the global one.

• Rotation Offsets: Apply rotation angles to adjust the coordinate system orientation to match local directions.

2. Apply Offsets:

• Enter the offset values into the software settings.

• The software will automatically adjust the coordinates based on these values.

3. Verify Alignment:

• Perform field measurements to ensure the adjusted coordinates match the local reference points.

• Make additional adjustments if necessary to achieve the desired accuracy.

Example Usage:

A surveyor working in a small town might use local landmarks as reference points. By applying local offsets, the coordinates in their survey data will correspond accurately to these local landmarks.

Steps to Set Up Local Offsets in SurPad 4.2

1. Open Coordinate System Settings:

• Navigate to the "Coordinate System" settings in SurPad 4.2.

2. Set Local Offsets:

• Enter the translation and rotation values for your local offsets.

• Save the settings to apply the offsets to your project.

3. Verify and Adjust:

• Conduct field tests to verify the accuracy of your settings.

• Make any necessary adjustments to ensure precise alignment with local reference points.

By using Local Offsets, surveyors can achieve highly accurate geospatial data that aligns with local reference points, ensuring the reliability and precision of their work.