picea


Damage scores (ordinal scale) for Picea Sitchesis shoots at two dates, at four temperatures, and 4 ozone Levels


datasets

A mixed collection of useful and semi-useful diverse
statistical functions, some of which may even be referenced in
The R Primer book.

Claus Ekstrm

MESS

Miscellaneous Esoteric Statistical Scripts

picea function

An artificial data frame with 18 observations in each of three groups.
<dl> <dt>temp</dt><dd>temperature in degrees Celcius</dd> <dt>conc</dt><dd>Ozone concentration at 4 different levels</dd> <dt>damage</dt><dd>the damage score from 0-4, higher is more damage</dd> <dt>count</dt><dd>The number of occurrences of this group</dd>
</dl>

Format

P.W. Lucas, D.A. Cottam, L.J. Sheppard, B.J. Francis (1988). "Growth
Responses and Delayed Winter Hardening in Sitka Spruce Following Summer
Exposure to Ozone," New Phytologist, Vol. 108, pp. 495-504.

picea: Ozone concentration damage to picea spruce

Description

Arguments

Format

Source

Examples