Lcross(spatstat)
Lcross()所属R语言包:spatstat
Multitype L-function (cross-type)
多类型L-函数(十字型)
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Calculates an estimate of the cross-type L-function for a multitype point pattern.
计算的多类型的点图案的十字型的L-函数的估计。
用法----------Usage----------
Lcross(X, i, j, ...)
参数----------Arguments----------
参数:X
The observed point pattern, from which an estimate of the cross-type L function Lij(r) will be computed. It must be a multitype point pattern (a marked point pattern whose marks are a factor). See under Details.
所观察到的点格局,十字型L函数Lij(r)将计算的估计。它必须是一个多类型的点模式(一个标记点图案的标记是一个因素)。请参阅“详细信息”下。
参数:i
The type (mark value) of the points in X from which distances are measured. A character string (or something that will be converted to a character string). Defaults to the first level of marks(X).
X距离的测量点的类型(标记值)。一个字符串(或东西都将被转换为一个字符串)。默认的第一级marks(X)。
参数:j
The type (mark value) of the points in X to which distances are measured. A character string (or something that will be converted to a character string). Defaults to the second level of marks(X).
距离的测量点X的类型(标记值)。一个字符串(或东西都将被转换为一个字符串)。默认的第二个层次的marks(X)。
参数:...
Arguments passed to Kcross.
传递参数到Kcross。
Details
详细信息----------Details----------
The cross-type L-function is a transformation of the cross-type K-function,
十字型的L-函数是十字型的K函数的变换,
where Kij(r) is the cross-type K-function from type i to type j. See Kcross for information about the cross-type K-function.
Kij(r)是函数类型的十字型K-i输入j。见Kcross的十字型K-函数的信息。
The command Lcross first calls Kcross to compute the estimate of the cross-type K-function, and then applies the square root transformation.
Lcross第一次调用命令Kcross来计算的十字型K-函数的估计,然后再应用的平方根转换。
For a marked point pattern in which the points of type i are independent of the points of type j, the theoretical value of the L-function is Lij(r) = r. The square root also has the effect of stabilising the variance of the estimator, so that Lij is more appropriate for use in simulation envelopes and hypothesis tests.
在其中的点的类型i是独立的类型j点的一个显着的点模式,L-函数的理论值是Lij(r) = r。稳定估计的方差的平方根也有效果,从而使Lij是更适合于使用在模拟信封和假设检验。
值----------Value----------
An object of class "fv", see fv.object, which can be plotted directly using plot.fv.
类的一个对象"fv",fv.object,它可以绘制直接使用plot.fv的。
Essentially a data frame containing columns
本质上是一个数据框包含多个列
参数:r
the vector of values of the argument r at which the function Lij has been estimated
的参数的值的矢量r在哪些函数Lij已估计
参数:theo
the theoretical value Lij(r) = r for a stationary Poisson process
理论值Lij(r) = r平稳泊松过程
together with columns named "border", "bord.modif", "iso" and/or "trans", according to the selected edge corrections. These columns contain estimates of the function Lij obtained by the edge corrections named.
一起列名为"border","bord.modif","iso"和/或"trans",根据选定的边修正。这些列包含的功能Lij命名的边缘修正的估计。
(作者)----------Author(s)----------
Adrian Baddeley
<a href="mailto:Adrian.Baddeley@csiro.au">Adrian.Baddeley@csiro.au</a>
<a href="http://www.maths.uwa.edu.au/~adrian/">http://www.maths.uwa.edu.au/~adrian/</a>
and Rolf Turner
<a href="mailto:r.turner@auckland.ac.nz">r.turner@auckland.ac.nz</a>
参见----------See Also----------
Kcross, Ldot, Lest
Kcross,Ldot,Lest
实例----------Examples----------
data(amacrine)
L <- Lcross(amacrine, "off", "on")
plot(L)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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