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What causes the Surfer gridding error:"Insufficient data (collinear)"? Is it because all my Y values are 0?

Surfer can not grid data if all of the points are collinear (all in a straight line). 

 

Either add more data points not in the line, or change one of the values by a small amount (e.g. 0.001), save the changes, and grid the data.

 

Updated September 18, 2017

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