galapagos


Johnson and Raven (1973) have presented data giving the number of species and related variables for 29 different islands in the Galapagos Archipelago.


datasets

This package is a companion to the textbook S. Weisberg (2014),
"Applied Linear Regression," 4rd edition, Wiley. It includes all the
data sets discussed in the book and one function to access the textbook's
website.
This package depends on the car package.  Many data files in this package
are included in the alr3 package as well, so only one of them should be
loaded.

Sanford Weisberg

alr4

Data to accompany Applied Linear Regression 4rd edition

galapagos function

This data frame uses the island name as row labels 
and contains the following columns:
 <dl>
    <dt>NS</dt><dd>
 Number of Species
    </dd> <dt>ES</dt><dd>
 Number of endemic species (orrur only on that island)
    </dd> <dt>Area</dt><dd>
 Surface area of island, hectares
    </dd> <dt>Anear</dt><dd>
 Area of closest island, hectares
    </dd> <dt>Dist</dt><dd>
 Distance to closest island, km
    </dd> <dt>DistSC</dt><dd>
 Distance from Santa Cruz Island, km
    </dd> <dt>Elevation</dt><dd>
 Elevation in m, missing values given as zero
    </dd> <dt>EM</dt><dd>
 1 if elevation is observed, 0 if missing
    </dd> </dl> 

Format

Johnson, M.P., and Raven, P.H. (1973). Species number and endemism: The Galapagos Archipelago revisited. <em>Science</em>, 179, 893-895.

galapagos: Galapagos species data

Description

Arguments

Format

Source

References

Examples