There is not a way to convert the alphabetic column headings in the worksheet to numeric headings in Surfer. To add your vote to this request on our suggestion file, please email surfersupport@goldensoftware.com.

As a workaround, you can insert a row of numbers at the top of the worksheet. To do this:

1. Open the worksheet in Surfer.
2. Highlight row 1 and click Data | Edit | Insert to insert a blank row at the top of the worksheet.
3. Click Data | Data | Transform.
4. Select Row variables from the Transform with dropdown list.
5. Enter the Transform equation: _1=row()
6. Enter your first column into the First col box and your last column into the Last col box:
   
7. Click OK and row 1 is populated with the consecutive numbers:
   

Updated November, 2020