Rotate Coordinates About A Pivot Point

This program is used to rotate X,Y location coordinates by a user-declared amount around a user-declared "pivot" point.

Data Columns
- Input: Use these prompts to select the columns in the current datasheet which contain the input data. Be sure you define your coordinate system and units. See Defining your Datasheet Coordinates for more information.
  - X (Easting): Select the column that contains un-rotated easting coordinate.
  - Y (Northing): Select the column that contains un-rotated northing coordinate.
- Output: Use these prompts to select the desired output columns. Any existing data in these columns will be overwritten.
  - X (Easting): Select the column in which to store rotated easting coordinates.
  - Y (Northing): Select the column in which to store rotated northing coordinates.
Rotation Parameters
- Pivot Point: All rotations are performed relative to this point. Rotation are performed in a clockwise direction.
  - Easting: Enter the X coordinate at pivot point.
  - Northing: Enter the Y coordinate at pivot point.
- Rotation Amount: Amount (clockwise) in which to rotate coordinates about pivot point. Rotations are performed relative to the rotation origin (pivot point).
- Decimals: Enter the number of decimal places to use when saving x and y coordinates.

Access the RockWorks Datasheet program tab.
Create a new datasheet and enter or import the listing of X and Y coordinates to be rotated.
Or, open one of the sample files and replace that data with your own. See Data Layout for datasheet examples.
! Click the Example button at the top of the window to load a sample file that is installed with the program.
Choose the Utilities | Coords | Rotate XY Data menu option.
Enter the requested program settings, described above.
Click the Continue button to proceed.

The program will rotate each coordinate pair by the indicated amount, storing the new coordinates in the indicated columns.