+--------+-------------------+
| topo   | R Documentation   |
+--------+-------------------+

Spatial Topographic Data
------------------------

Description
~~~~~~~~~~~

The ``topo`` data frame has 52 rows and 3 columns, of topographic
heights within a 310 feet square.

Usage
~~~~~

::

    topo

Format
~~~~~~

This data frame contains the following columns:

``x``
    x coordinates (units of 50 feet)

``y``
    y coordinates (units of 50 feet)

``z``
    heights (feet)

Source
~~~~~~

Davis, J.C. (1973) *Statistics and Data Analysis in Geology.* Wiley.

References
~~~~~~~~~~

Venables, W. N. and Ripley, B. D. (2002) *Modern Applied Statistics with
S.* Fourth edition. Springer.
