skel.plot {dplR} | R Documentation |
Automatically generates a skeleton plot of tree-ring data.
skel.plot(y)
y |
a tree-ring chronology or series |
This makes a skeleton plot - a plot that gives the relative growth for a year relative to the surrounding years. This is done on high frequency growth. Low frequency variation is removed using a Hanning filter with weight set to nine. Relative growth is scaled from one to ten but only values greater than three are plotted.
None. This function is invoked for its side effect, which is to produce a plot.
Andy Bunn
Stokes, M.A. and Smiley, T.L. (1968) An Introduction to Tree-Ring Dating. The University of Arizona Press. ISBN-13: 978-0816516803.
# On a raw ring width series data(ca533) skel.plot(ca533[,1]) # On a chronology data(cana157) skel.plot(cana157[,1])