Fig. 4

Smoothing spline functions for the leaf cross section in Fig. 1; digitised curves for two strips from the same leaf, a before dehydration and b after dehydration. t is a variable which indexes position along the curve
Smoothing spline functions for the leaf cross section in Fig. 1; digitised curves for two strips from the same leaf, a before dehydration and b after dehydration. t is a variable which indexes position along the curve