To change the units for a selected coordinate system in Surfer, follow these steps:
- In the Assign Coordinate System dialog, select the coordinate system you want to change the units of. For example, you could select a UTM coordinate system.
- Click the Modify button.
- In the Define Coordinate System dialog, under the Projection section, click the arrow in the Name field under Linear Units and select Feet (or whatever units you want).
- Change the name of the coordinate system to indicate the new units.
- Click OK.
- If this coordinate system is listed under Custom, click the Add to Favorites button to list it under your Favorites so you can use it in the future without recreating it.
Updated October 3, 2017