boundary


The dataset contains the coordinates for the boundary of the "quake" dataset.  The boundary is defined as the convex hull containing all of the observed events.


datasets

Includes two functions to evaluate the hypothesis of complete spatial randomness (csr) in point processes.  The function 'mwin' calculates quadrat counts to estimate the intensity of a spatial point process through the moving window approach proposed by Bailey and Gatrell (1995).  Event counts are computed within a window of a set size over a fine lattice of points within the region of observation.  The function 'pielou' uses the nearest neighbor test statistic and asymptotic distribution proposed by Pielou (1959) to compare the observed point process to one generated under csr.  The value can be compared to that given by the more widely used test proposed by Clark and Evans (1954).

Sarah Smith

csrplus

Methods to Test Hypotheses on the Distribution of Spatial Point
Processes

boundary function

A data frame with 16 observations on the following 2 variables.
  <dl>
    <dt><code>Longitude</code></dt><dd>a numeric vector containing the longitude values</dd> <dt><code>Latitude</code></dt><dd>a numeric vector containing the latitude values</dd> </dl> 

Format

The boundary was obtained using the "chull()" function.

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boundary: Boundary for California Earthquake Data

Description

Usage

Arguments

Format

Source

Examples