quad.ppm(spatstat)
quad.ppm()所属R语言包：spatstat
Extract Quadrature Scheme Used to Fit a Point Process Model
提取一个点过程模型来拟合正交计划
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Given a fitted point process model, this function extracts the quadrature scheme used to fit the model.
给定一个安装点过程模型，这个函数提取的正交方案，以适应模型。
用法----------Usage----------
quad.ppm(object, drop=FALSE)
参数----------Arguments----------
参数：object
fitted point process model (an object of class "ppm" or "kppm").
装点过程模型（一个类的对象"ppm"或"kppm"）。
参数：drop
Logical value determining whether to delete quadrature points that were not used to fit the model.
逻辑值，确定是否删除不使用的正交点，拟合模型。
Details
详细信息----------Details----------
An object of class "ppm" represents a point process model that has been fitted to data. It is typically produced by the model-fitting algorithm ppm.
一个对象的类"ppm"的表示点已安装的过程模型，数据。它通常所产生的模型的拟合算法ppm。
The maximum pseudolikelihood algorithm in ppm approximates the pseudolikelihood integral by a sum over a finite set of quadrature points, which is constructed by augmenting the original data point pattern by a set of “dummy” points. The fitted model object returned by ppm contains complete information about this quadrature scheme. See ppm or ppm.object for further information.
在ppm的的最大pseudolikelihood算法由正交的点，这是通过增大由“虚拟”的点的一组原始数据点图案构成的有限集合的总和超过整体的pseudolikelihood相若。拟合的模型对象返回ppm这个积分方案包含完整的信息。 ppm或ppm.object进一步的信息。
This function quad.ppm extracts the quadrature scheme. A typical use of this function would be to inspect the quadrature scheme (points and weights) to gauge the accuracy of the approximation to the exact pseudolikelihood.
此功能quad.ppm提取正交计划。一个典型的使用这个功能将检查点和权重的正交计划（）来测量精度的近似的确切pseudolikelihood。
It may happen that some quadrature points are not actually used in fitting the model (typically because the value of a covariate is NA at these points). The argument drop specifies whether these unused quadrature points shall be deleted (drop=TRUE) or retained (drop=FALSE) in the return value.
它可能发生，实际上不使用一些正交点拟合模型（通常因为协变量的值是NA在这些点处）。这些未使用的正交点是否应删除（drop）或保留（drop=TRUE）的返回值中指定的参数drop=FALSE。
See ppm.object for a list of all operations that can be performed on objects of class "ppm". See quad.object for a list of all operations that can be performed on objects of class "quad".
见ppm.object的列表可以执行的所有操作对象的类"ppm"。见quad.object的列表可以执行的所有操作对象的类"quad"。
This function can also be applied to objects of class "kppm".
此功能也可被应用的对象的类"kppm"。
值----------Value----------
A quadrature scheme (object of class "quad").
正交计划（类的对象"quad"“）。
（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----------
ppm.object, quad.object, ppm
ppm.object，quad.object，ppm
实例----------Examples----------
data(cells)
fit <- ppm(cells, ~1, Strauss(r=0.1))
Q <- quad.ppm(fit)
## Not run: plot(Q)[＃不运行曲线（Q）]
Q$data$n
Q$dummy$n
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。
|
发表于 2012-9-30 14:02:52
