Fig. 5

Error (RMSE) of diameter estimates at various heights up the stem, with points indicating RMSE at each measured height and lines showing trend generated by smoothed conditional means. Different colored points and lines refer to the five different estimation approaches. The graph on the left shows the error in terms of the absolute height, while the one on the right shows the error at heights relative to the total tree height in 10% increments. Values over 100% on the y-axis in the right graph indicate an incorrect estimate of total tree height