Soma_Surface|It computes the surface of the soma (Type=1). If soma composed of just one compartment, then it uses the sphere assumption, otherwise it returnsthe sum of the external cylindrical surfaces of compartments froming the soma.
N_stems|It returns 1 if compartment is the starting point of a stem (Id>2 and Father is 1)
N_bifs|It returns 1 if compartment is a bifurcation point.
N_branch|It returns 1 if compartment is a bifurcation or a terminal tip
N_tips|It returns 1 if compartment is a terminal tip
Width|It returns the width of the neuron considerind the 95% of structural length after performing PCA on the neuron to reorient it along its primary axis.
Height|It returns the height the neuron considerind the 95% of structural length after performing PCA on the neuron to reorient it along its primary axis.
Depth|It returns the depth of the neuron considerind the 95% of structural length after performing PCA on the neuron to reorient it along its primary axis.
Type|It returns type of compartment (1=soma, 2=axon, 3=dendrites, 4=basal dentrites...)
Diameter|It returns the diameter of the compartment
Length|It returns length of compartment (outside soma: id!=1, if it is 0 it won't return a value, just VOID)
Surface|It returns surface of compartment: 2*PI*(length of compartment computed as distance between actual point and previous segment)
Volume|It returns the volume of the compartment
EucDistance|Euclidean distance from soma
PathDistance|Path distance from soma
Xyz|It returns the XYZ of compartment tab separated (useful to perfom 3D analysis with other statistical packages)
Branch_Order|It returns the order of the compartment. Soma(or first segment) has always order 0.
Terminal_degree|It returns the number or terminal tips that actual compartment will lead to. The terminal_degree of the soma is the number of terminal tips of the entire neuron, the terminal_degree of a terminal tip is 1.
Taper_1|Burke Taper: actual diameter minus previous diameter, divided by the length of the branch.
Taper_2|Hillman taper: given a branch it computes ratio between the final diameter and the initial one.
Branch_pathlength|It returns the sum of the length of all compartments forming the given branch
Contraction|Ratio between Euclidean distance of a branch and its path length.
Fragmentation|It returns number of compartments of each segment.
Daughter_Ratio|computed only on bifurcation. Return the ratio between the bigger daughter and the other one. A daughter is the next compartment connected to a bifurcation
Parent_Daughter_Ratio|It returns the ratio between the diameter of a daughter and its father
Partition_asymmetry|computed only on bifurcation. If n1 is the number of tips on the left and n2 on the right. Asymmetry return abs(n1-n2)/(n1+n2-2)
Rall_Power|Rall value computed as the best value that fit the equation ( (biforcation_diameter)^Rall=(daughter1_diameter^Rall+daughter2_diameter^Rall) with extreme 0-5, resolution 1/1000 over the range. Bifurcations with diameter equal or less than one of the daughter does NOT return any values.
Pk|After computing the average value for Rall power, it returns the ratio (d1^rall+d2^rall)/(biforcDiam^rall)
Pk_classic|it returns the same value as Pk, but with Rall power sets to 1.5
Pk_2|it returns the same value as Pk, but with Rall power sets to 2
Bif_ampl_local|Given a bifurcation, it returns the angle between the first two compartments (in degree)
Bif_ampl_remote|Given a bifurcation, it returns the angle between that bifurcation and the end of the two growing segments (in degree)
Bif_tilt_local|It returns the angle between the previous compartment of a bifurcation and the next compartment of the same bifurcation. Since there are two compartments|exiting the bifurcation, the angle returned is the smaller of the two possible. 
Bif_tilt_remote|It returns the angle between the previous segment of a bifurcation and the next segment of the same bifurcation. Since there are two compartments exiting the bifurcation, the angle returned is the smallest of the two possible. Previous segment must have ID>1.
Bif_torque_local|It returns the angle between the plane of previous bifurcation and the actual bifurcation. Actual bifurcation plane is identified by the first 2 compartments. If angle is > PI/2 return PI/2- angle
Bif_torque_remote|It returns the angle between the plane of previous bifurcation(identified by the 3 points:actual bif, prev bif and other segment leving the prev bif) and the actual bifurcation. Actual bifurcation plane is identified by the 2 segments leaving the bifurcation. If angle is > PI/2 return PI/2- angle
Last_parent_diam|It returns the diameter of last bifurcation  before the terminal tips
Diam_threshold|It returns Diameter of first compartment after the last bifurcation leading to a terminal tip