Table 1:

Description of variables exported from RpEGEN.m script to the MAT file.

Variable Name	Variable Type	Variable Size	Variable Description
ROIname	Cell	{N x 1}	Names of the ROI files processed
ROIxy	Cell	{N x 1}	ROI vertices for each ROI file processed
IMGname	Cell	{N x 1}	Names of the TIF image files processed
IMG	Cell	{N x 1}	8-bit brightfield image data for each TIF processed
ROIBW	Cell	{N x 1}	Logical (0 or 1) ROI mask with the same dimensions as IMG images
CLine	Cell w/ Tables	{N x 1} (n x 16)	Centerline data for individual images including x, y, distance, angle, index, # of points, and statistics
Cldx	Cell	{N x 1}	Centerline indice data relating ROI mask points to the closest centerline point for calculating CLine
CLineBW	Cell	{N x 1}	Logical (0 or 1) matrix with the same dimensions as IMG images indicating the location of the centerline (=1)
RAW_data	Table	N x 3	Table combining all the raw data for each pixel in the ROIs across all the different IMG images
BIN_1_deg_all	Table	N x 9	Table containing 1-degree binned data and statistics using the data from RAW_data
BIN_5_deg_all	Table	N x 9	Table containing 5-degree binned data and statistics using the data from RAW_data
BIN_10_deg_all	Table	N x 9	Table containing 10-degree binned data and statistics using the data from RAW_data

Definitions are as follows: ROI(s) = region(s) of interest; TIF = tagged image file format.