To a given tree intree with diameter values, this fits a quadratic tapering using “quaddiameter_tree” to best fit the original diameters. The output is a scaling and an offset value in P0 for direct input to “quaddiameter_tree”.

See below how well two parameters simply describe the dendritic quadratic tapering nearly perfectly.

Example 1:

>> tree = resample_tree (sample2_tree, 1, '-d');

>> [P0 qtree] = quadfit_tree (tree); P1

0.3250 1.2880

TREES

Example 2:

>> tree = resample_tree (sample_tree, 1, '-d');

>> [P0 qtree] = quadfit_tree (tree); P1

0.2736 1.0336

TREES

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