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Growth of Orange Trees
Records of the growth of orange trees.
TreeA categorical indicating on which tree the measurement is made. Ordering is according to increasing maximum diameter.
ageAge of the tree (days since 1968-12-31).
circumferenceTrunk circumference (mm). This is probably “circumference at breast height”, a standard measurement in forestry.
The data are given in Box & Jenkins (1976). Obtained from the Time Series Data Library at http://www-personal.buseco.monash.edu.au/~hyndman/TSDL/.
Draper, N. R. and Smith, H. (1998). Applied Regression Analysis (3rd ed). New York: Wiley. (exercise 24.N).
Pinheiro, J. C. and Bates, D. M. (2000). Mixed-effects Models in S and S-PLUS. New York: Springer.
t = octave.dataset.Orange; # TODO: Port coplot to Octave # TODO: Linear model