IDW, second-order trend surface, regularised spline and spline with tension were used to interpolate surfaces based on the same set of sample points. The RMSE errors generated by IDW, second-order trend surface, regularised spline and spline with tension are respectively 0.87, 1.72, 1.01 and 0.99. Which interpolation method produced the best results?
A) IDW
B) second-order trend surface
C) regularised spline
D) spline with tension

Question

Quizplus · Accepted Answer

IDW produced the best results as it has the lowest RMSE error (0.87) among the methods listed.

IDW, Second-Order Trend Surface, Regularised Spline and Spline with Tension