linearKinhom(spatstat)
linearKinhom()所属R语言包:spatstat
Inhomogeneous Linear K Function
非齐次线性K功能
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Computes an estimate of the inhomogeneous linear K function for a point pattern on a linear network.
计算的估计的非齐次线性K函数线性网络上的点图案。
用法----------Usage----------
linearKinhom(X, lambda=NULL, r=NULL, ..., correction="Ang", normalise=TRUE)
参数----------Arguments----------
参数:X
Point pattern on linear network (object of class "lpp").
点线性网络模式(类的对象"lpp"“)。
参数:lambda
Intensity values for the point pattern. Either a numeric vector, a function, a pixel image (object of class "im" or "linim") or a fitted point process model (object of class "ppm" or "lppm").
强度值的点模式。无论是数值向量,一个function,一个像素的图像(类的对象"im"或"linim")或拟合点过程模型(对象类"ppm"或<X >)。
参数:r
Optional. Numeric vector of values of the function argument r. There is a sensible default.
可选。数字矢量值函数的参数r。有一个合理的默认。
参数:...
Ignored.
忽略。
参数:correction
Geometry correction. Either "none" or "Ang". See Details.
几何校正。无论是"none"或"Ang"。查看详细信息。
参数:normalise
Logical. If TRUE (the default), the denominator of the estimator is data-dependent (equal to the sum of the reciprocal intensities at the data points), which reduces the sampling variability. If FALSE, the denominator is the length of the network.
逻辑。如果TRUE(默认值),分母的估计是依赖于数据的数据点的总和的倒数强度的,从而减少了抽样变异。如果FALSE,分母是在网络的长度。
Details
详细信息----------Details----------
This command computes the inhomogeneous version of the linear K function from point pattern data on a linear network.
该命令计算不均匀版本的线性K功能点的图形数据的线性网络。
If lambda = NULL the result is equivalent to the homogeneous K function linearK. If lambda is given, then it is expected to provide estimated values of the intensity of the point process at each point of X. The argument lambda may be a numeric vector (of length equal to the number of points in X), or a function(x,y) that will be evaluated at the points of X to yield numeric values, or a pixel image (object of class "im") or a fitted point process model (object of class "ppm" or "lppm").
如果lambda = NULL结果是等效的均匀K函数linearK。如果lambda被给定的,那么它是预期提供的点处理的强度的估计值,在每个点的X。参数lambda可能是一个数值向量(长度相等的点的数量在X),或一个function(x,y),将评价在X点产生的数值,或像素图像(类的对象"im")或拟合点过程模型(类的对象"ppm"或"lppm")。
If correction="none", the calculations do not include any correction for the geometry of the linear network. If correction="Ang", the pair counts are weighted using Ang's correction (Ang, 2010).
如果correction="none",计算不包括线性网络的几何形状的任何校正。如果correction="Ang",对数进行加权用李安的修正(李安,2010)。
值----------Value----------
Function value table (object of class "fv").
函数值表(类的对象"fv")。
(作者)----------Author(s)----------
Ang Qi Wei <a href="mailto:aqw07398@hotmail.com">aqw07398@hotmail.com</a> and
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>
参考文献----------References----------
on a linear network. MSc thesis, University of Western Australia.
Geometrically corrected second-order analysis of events on a linear network, with applications to ecology and criminology. To appear in Scandinavian Journal of Statistics.
参见----------See Also----------
lpp
lpp
实例----------Examples----------
data(simplenet)
X <- rpoislpp(5, simplenet)
fit <- lppm(X, ~x)
K <- linearKinhom(X, lambda=fit)
plot(K)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
注2:由于是机器人自动翻译,难免有不准确之处,使用时仔细对照中、英文内容进行反复理解,可以帮助R语言的学习。
注3:如遇到不准确之处,请在本贴的后面进行回帖,我们会逐渐进行修订。
|