pcfdot.inhom(spatstat)
pcfdot.inhom()所属R语言包:spatstat
Inhomogeneous Multitype Pair Correlation Function (Type-i-To-Any-Type)
非均匀多类型,对相关函数(I型到任何类型)
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Estimates the inhomogeneous multitype pair correlation function (from type i to any type) for a multitype point pattern.
估计的非均匀多类型对相关功能的(从类型i任何类型的)的多类型的点模式。
用法----------Usage----------
pcfdot.inhom(X, i, lambdaI = NULL, lambdadot = NULL, ...,
r = NULL, breaks = NULL,
kernel="epanechnikov", bw=NULL, stoyan=0.15,
correction = c("isotropic", "Ripley", "translate"),
sigma = NULL, varcov = NULL)
参数----------Arguments----------
参数:X
The observed point pattern, from which an estimate of the inhomogeneous multitype pair correlation function g[i.](r) will be computed. It must be a multitype point pattern (a marked point pattern whose marks are a factor).
观测点的模式,从估计的非均匀多类型对相关函数g[i.](r)将被计算。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)。
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:lambdaI
Optional. Values of the estimated intensity function of the points of type i. Either a vector giving the intensity values at the points of type i, a pixel image (object of class "im") giving the intensity values at all locations, or a function(x,y) which can be evaluated to give the intensity value at any location.
可选。值类型i点的估计强度功能。无论是向量,使在该点的亮度值类型i,一个像素的图像(类的对象"im")发出的强度值在所有地点,或function(x,y)可以评估给在任何位置的强度值。
参数:lambdadot
Optional. Values of the estimated intensity function of the point pattern X. A numeric vector, pixel image or function(x,y).
可选。估计强度函数的点模式X值。一个数值向量,像素的图像或function(x,y)。
参数:r
Vector of values for the argument r at which g[i.](r) should be evaluated. There is a sensible default.
向量参数的值r,g[i.](r)应该进行评估。有一个合理的默认。
参数:breaks
Optional. An alternative to the argument r. Not normally invoked by the user.
可选。替代到的参数r。通常不是由用户调用。
参数:kernel
Choice of smoothing kernel, passed to density.default.
选择平滑的内核,传递给density.default。
参数:bw
Bandwidth for smoothing kernel, passed to density.default.
带宽为平滑的内核,传递给density.default。
参数:...
Other arguments passed to the kernel density estimation function density.default.
其他参数传递给内核密度估计函数density.default。
参数:stoyan
Bandwidth coefficient; see Details.
带宽系数;详细。
参数:correction
Choice of edge correction.
选择边缘校正。
参数:sigma,varcov
Optional arguments passed to density.ppp to control the smoothing bandwidth, when lambdaI or lambdadot is estimated by kernel smoothing.
可选参数传递给density.ppp控制的平滑带宽,当lambdaI或lambdadot核平滑估计。
Details
详细信息----------Details----------
The inhomogeneous multitype (type i to any type) pair correlation function g[i.](r) is a summary of the dependence between different types of points in a multitype spatial point process that does not have a uniform density of points.
非齐次多类型(类型i任何类型)对相关功能g[i.](r)是总结了不同类型的多类型空间点过程中,并没有一个统一的点密度之间的依赖关系。
The best intuitive interpretation is the following: the probability p(r) of finding a point of type i at location x and another point of any type at location y, where x and y are separated by a distance r, is equal to
最直观的解释如下:的概率p(r)位置找到一个点的类型i在x和另一点,任何类型的在位置y,<所述>和x分开通过的距离y,等于
where lambda[i] is the intensity function of the process of points of type i, and where lambda is the intensity function of the points of all types. For a multitype Poisson point process, this probability is p(r) = lambda[i](x) * lambda(y) so g[i.](r) = 1.
其中lambda[i]是类型i点的强度的功能的过程中,并在lambda是所有类型的点的强度的功能。对于进行多的泊松点的过程中,这个概率是p(r) = lambda[i](x) * lambda(y)所以g[i.](r) = 1。
The command pcfdot.inhom estimates the inhomogeneous multitype pair correlation using a modified version of the algorithm in pcf.ppp.
命令pcfdot.inhom估计的非均匀多类型对相关的算法在pcf.ppp使用修改后的版本。
If the arguments lambdaI and lambdadot are missing or null, they are estimated from X by kernel smoothing using a leave-one-out estimator.
如果参数lambdaI和lambdadot缺少或空,他们估计X的使用留一出核平滑估计。
值----------Value----------
A function value table (object of class "fv"). Essentially a data frame containing the variables
函数值表(类的对象"fv")。本质上是一个数据框包含的变量
参数:r
the vector of values of the argument r at which the inhomogeneous multitype pair correlation function g[i.](r) has been estimated
矢量参数的值r不均匀的多类型对相关功能g[i.](r)已经估计
参数:theo
vector of values equal to 1, the theoretical value of g[i.](r) for the Poisson process
矢量的值等于1,为泊松过程的理论价值g[i.](r)
参数:trans
vector of values of g[i.](r) estimated by translation correction
向量的值g[i.](r)估计翻译校正
参数:iso
vector of values of g[i.](r) estimated by Ripley isotropic correction
g[i.](r)估计里普利各向同性修正值向量
as required.
根据需要。
(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----------
pcf.ppp, pcfinhom, pcfdot, pcfcross.inhom
pcf.ppp,pcfinhom,pcfdot,pcfcross.inhom
实例----------Examples----------
data(amacrine)
plot(pcfdot.inhom(amacrine, "on", stoyan=0.1), legendpos="bottom")
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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