| area | Return a area from polygon xy coordinates |
| circumference | Return circumference length of polygon line |
| classTreeRingShape-class | class of TreeRingShape |
| degree | Constant for conversion from degree to radian #### |
| DiskInfo | Return information for tree disk analysed from TreeRingShape... |
| dst | Return a vector of distances from original a point (0,0) from... |
| dstpp | Return vector for distance between adjacent two points |
| Ldeg360 | Return a vector of center angle 0 to 360(degree) for x y... |
| Llist2dataframe | Convert from a list of tree rings polygons (L) to data frame... |
| Lmove | Move the tree rings coordinates based on P00 (x,y movement... |
| Lplot | Plot a graphics of tree rings |
| Lplot2 | Draw a graphics of tree rings by 1 ring (3*3 in a screen) |
| Lrad.plot | Check center angle of points to input order |
| Lrn | Return a ring number of tree ring polygons list (L) from year |
| Lsort | Sort x,y coordinates of a tree ring line with center angle of... |
| Lsort_all | Sort x,y coordinates of tree ring lines with center angle of... |
| new_classTreeRingShape | Initial setting of a new classTreeRingShape (TR) |
| nstP | Return a vector of row numbers of points that have nearest... |
| plot_TreeRing | Draw a plot of tree rings This function draws Tree rings of a... |
| plot_TreeRing_df | plot_TreeRing_df Draw a Tree ring of a disk from data... |
| plot_TreeRings_df | Plot tree rings from data fame This function draws Tree rings... |
| plot_year_RingArea | Plot and return data frame of year_disk area and year_Tree... |
| rdst | Return relative distance between two representative tree... |
| rdst_MerginePlus | Return relative distance between two representative tree... |
| ReadShapefile_P00 | Return x,y coordinates of a tree ring center point (P00) from... |
| ReadShapefile_TreeRingPoints | Read a shape file of Tree Ring Points ( P : radial input and... |
| ReadShapefile_TreeRings | Read Shapefile_TreeRings |
| seq_deg | Return a vector of sequence of angles between start and end... |
| TR | A sample object of class TreeRingShape |
| TR_ | A sample object of class TreeRingShape, shapefile paths and... |
| TreeRingIndex | Calculate tree ring index from chronosequence data... |
| TreeRingShape | Construct a object (TR) of classTreeRingShape |
| TreeRingsInterpolation | Interpolates tree ring between representative (manual input)... |
| TreeRingsLines | Read representative tree ring lines from shape files |
| TreeRingsPoints | Read TreeRingsPoints shape file, check and save parameters |
| WriteShapefile_TreeRings | Write a shapefile of interpolated tree rings |
