Fig. 3From: Spectrometric prediction of wood basic density by comparison of different grain angles and variable selection methodsMeasured and predicted WBD (g/cm3) (top two) and Residuals plotted against measured Density (g/cm3) (bottom two) in the 90° angles and mixed angle model of multiple tree species using full length NIR spectra. Error bars for predicted values represent the standard deviations obtained from the 200 simulated modelsBack to article page