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    Leslie McWhirter

    Hi Stephane,

    With your method, the grid nodes every 10m will be interpolated based on the equation for the selected gridding method, and then the nodes in between those will be interpolated from those 10m grid nodes using a cubic spline interpolation. 

    With the alternative method, all of the grid nodes will be interpolated based on the equation for the selected gridding method.

    In the test case I ran, the latter worked better since inserting so many nodes created some bulls-eye contours, but it's not guaranteed that this will also be better for your case. Neither is any more or less correct than the other, so I recommend trying both and seeing which one gives you the results you want. 

    Thanks,

    Leslie McWhirter

    Technical Support

    Golden Software

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