milkman


  Milk yield data for cows milked manually twice a day (morning and evening).<p></p><p></p>

datasets

The facilities can roughly be grouped as:

1) Facilities for groupwise computations of summary statistics and
other facilities for working with grouped data: 'do' something to data
stratified 'by' some variables.

2) LSmeans (least-squares means), general linear contrasts.

3) Miscellaneous other utilities.

Søren Højsgaard

doBy

Groupwise Statistics, LSmeans, Linear Contrasts, Utilities

milkman function

A data frame with 161836 observations on the following 12 variables.
  <dl>
    <dt><code>cowno</code></dt><dd>a numeric vector; cow identification</dd> <dt><code>lactno</code></dt><dd>a numeric vector; lactation number</dd> <dt><code>ampm</code></dt><dd>a numeric vector; milking time: 1: morning; 2: evening</dd> <dt><code>dfc</code></dt><dd>a numeric vector; days from calving</dd> <dt><code>my</code></dt><dd>a numeric vector; milk yield (kg)</dd> <dt><code>fatpct</code></dt><dd>a numeric vector; fat percentage</dd> <dt><code>protpct</code></dt><dd>a numeric vector; protein percentage</dd> <dt><code>lactpct</code></dt><dd>a numeric vector; lactose percentage</dd> <dt><code>scc</code></dt><dd>a numeric vector; somatic cell counts</dd> <dt><code>race</code></dt><dd>a factor with levels <code>RDM</code> <code>Holstein</code> <code>Jersey</code></dd> <dt><code>ecmy</code></dt><dd>a numeric vector; energy corrected milk</dd> <dt><code>cowlact</code></dt><dd>Combination of cowno and lactno; necessary
      because the same cow may appear more than once in the dataset (in
      different lactations)</dd> </dl> 

milkman: Milk yield data for manually milked cows.

Description

Usage

Arguments

Format

Details

Examples