Fig. 1From: Multidimensional scaling of first-return airborne laser echoes for prediction and model-assisted estimation of a distribution of tree stem diametersObserved (full line) and expected (dashed line) relative frequency distributions of DBH ≥ 17.5 cm in Aillon. Leading species stratum means are in subplots a and b. Plot-level results are in subplots c and d. Bootstrap 95 % confidence intervals are in grey. See text below Eq. 2 for detailsBack to article page