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Analysing spatial point patterns in R - CSIRO

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130 Distance methods for <strong>po<strong>in</strong>t</strong> <strong>patterns</strong><br />

plots the estimates of L(r) = √ K(r), by all the available edge correction methods, aga<strong>in</strong>st<br />

r. The symbol . aga<strong>in</strong> signifies “all recommended estimates of the function”. The left hand side<br />

of the formula may use the command cb<strong>in</strong>d to <strong>in</strong>dicate that several different curves should be<br />

plotted. For example, to plot only two curves, giv<strong>in</strong>g the isotropic correction estimate and the<br />

theoretical value of K(r):<br />

> plot(K, cb<strong>in</strong>d(iso, theo) ~ r)<br />

The right-hand side can be any expression that evaluates to a numeric vector, and the left<br />

hand side is any expression that evaluates to a vector or matrix, of compatible dimensions.<br />

To manipulate or comb<strong>in</strong>e one or more "fv" objects, use eval.fv. Its argument is an<br />

expression conta<strong>in</strong><strong>in</strong>g the names of "fv" objects. For example<br />

> K L K1 K2 DK par(mfrow = c(1, 2))<br />

> X plot(X)<br />

> plot(Kest(X))<br />

Copyright<strong>CSIRO</strong> 2010

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