#### 8.2.57.48 tblish.dataset.Orange ¶

Static Method: `out =` Orange `()` ¶

  Growth of Orange Trees

  #### Description ¶

  Records of the growth of orange trees.

  #### Format ¶

  `Tree`

    A categorical indicating on which tree the measurement is made. Ordering is according to increasing maximum diameter.

  `age`

    Age of the tree (days since 1968-12-31).

  `circumference`

    Trunk circumference (mm). This is probably “circumference at breast height”, a standard measurement in forestry.

  #### Source ¶

  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/.

  #### References ¶

  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.

  #### Examples ¶

      t = tblish.dataset.Orange;

      # TODO: Port coplot to Octave

      # TODO: Linear model