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How can I rotate a grid 90° without switching the X and Y coordinates in Surfer?

To rotate a grid file 90° without interchanging the X and Y coordinates in Surfer, follow these steps:
  1. Click Grids | Edit | Convert.
  2. Select the grid file and click Open.
  3. In the Save Grid As dialog, choose to save the grid as a Surfer 6 Text Grid and click Save.
  4. Click OK in the Export Options dialog.
  5. Open the text grid in a text editor, like Notepad.
  6. Switch the third and fourth rows.
    1. Select the fourth row and click Edit | Cut.
    2. Insert a new row after row 2.
    3. Click Edit | Paste and paste the information as a new third row.
    4. Delete the blank row
    5. Click File | Save and save the changes. Close the file.
  7. In Surfer, click Grids | Calculate | Transform.
  8. In the Grid Transform dialog, click Browse in the Input Grid field.
  9. Select the newly saved text grid and click Open.
  10. In the Grid Transform dialog, choose Operation = Rotate and Angle = 90 (to rotate 90° counterclockwise) or 270 (to rotate 90° clockwise) and click OK.

Updated November 7, 2017

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