USArmyRoofs data frame has 153 observations of roof sections of US
Army bases and 2 columns,
fci. This is Example 2
of He & Ng (1999).
This data frame contains the following columns:
numeric vector giving the roof's age in years.
numeric, giving the FCI, the flash condition index, i.e., the percentage of flashing which is in good condition.
From shar file available from http://www.cba.nau.edu/pin-ng/cobs.html
He, X. and Ng, P. (1999) COBS: Qualitatively Constrained Smoothing via Linear Programming; Computational Statistics 14, 315–337.
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