Transform Coordinates Dialog

This dialog transforms the survey coordinates from the current Coordinate Reference System (From box) to another grid (To box). Once the transformation is complete, the settings in the To box become the current survey CRS and are stored with the survey the next time it is saved.

To change the survey CRS without changing the coordinates, choose Tools | Survey Information, Coordinate Reference System.

From - CRS, Zone, Grid Factor, Ellipse, Feet to Meters

This is the current survey Coordinate Reference System (CRS). When transforming the entire survey, you will not change these values. In fact, doing so will cause the transformation to compute erroneous coordinates.

TPC allows you to change these settings so that you can change selected imported traverses from whatever CRS they are on to the current CRS of the survey.

To - CRS, Zone, Grid Factor, Ellipse, Feet to Meters

Choose the desired CRS to transform the survey to. Once the transformation is complete, the CRS settings in the To box are stored with the survey as its current CRS.

Transform What

All - transform the entire survey.

Selected - transform just the selected traverses.

Converting Imported Traverses to the Survey CRS

At times, you might also import data based on one CRS and want to convert it to the CRS of the survey. TPC lets you specify the grid settings for those traverses and convert them to the same CRS as the survey. The steps are explained in the Coordinate Transformation topic.

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