This function can calculate ring widths according to coordinates of detected ring borders.
A data frame. The series ID is the column name and years are row names. The measurements units are millimeters (mm).
img.path <- system.file("001.png", package = "MtreeRing") ## Read a tree ring image: t1 <- ring_read(img = img.path, dpi = 1200) ## Split a long core sample into 3 pieces to ## get better display performance and use the ## watershed algorithm to detect ring borders: t2 <- ring_detect(ring.data = t1, seg = 3, method = 'watershed') #> Warning: The sampling year is set to the current year ## Calculate ring widths from the attribute list of t2: rw.df <- ring_calculate(ring.data = t2, seriesID = "940220")