pdot(secr)
pdot()所属R语言包:secr
Net Detection Probability
净检测概率
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Compute spatially explicit net probability of detection for individual(s) at given coordinates.
直观的净个人(S)的检测概率计算在给定的坐标。
用法----------Usage----------
pdot(X, traps, detectfn = 0, detectpar = list(g0 = 0.2,
sigma = 25, z = 1), noccasions = 5, binomN = NULL)
参数----------Arguments----------
参数:X
vector or 2-column matrix of coordinates
向量或2列的矩阵的坐标
参数:traps
traps object
traps对象
参数:detectfn
integer code for detection function q.v.
整数代码检测功能剂适量
参数:detectpar
a list giving a value for each named parameter of detection function
一个列表,给出每个命名参数的值的检测功能
参数:noccasions
number of intervals (occasions)
的间隔数(场合)
参数:binomN
integer code for discrete distribution (see secr.fit)
整数代码为离散分布(见secr.fit)
Details
详细信息----------Details----------
The probability computed is p.(X) = 1 - (1 - prod(p_s(X,k))^S where the product is over the detectors in traps, excluding any not used on a particular occasion. The per-occasion detection function p_s is halfnormal (0) by default, and is assumed not to vary over the S occasions.
计算的概率是p.(X) = 1 - (1 - prod(p_s(X,k))^S产品超过traps,不包括任何在一个特定的场合,不使用的探测器。每一次检测功能p_s是halfnormal(0),默认情况下,假定没有改变过S场合。
For detection functions (10) and (11) the signal threshold "cutval" should be included in detectpar, e.g., detectpar = list(beta0 = 103, beta1 = -0.11, sdS = 2, cutval = 52.5).
对于检测功能(10)和(11)的信号的阈值cutval应被包含在detectpar,例如detectpar = list(beta0 = 103, beta1 = -0.11, sdS = 2, cutval = 52.5)。
The calculation is not valid for single-catch traps because p.(X) is reduced by competition between animals.
计算单捕捉陷阱是无效的,因为p.(X)减少与动物之间的竞争。
值----------Value----------
A vector of probabilities, one for each row in X.
一个向量的概率,在X中的每一行之一
参见----------See Also----------
secr, make.mask,
secr,make.mask,
实例----------Examples----------
temptrap <- make.grid()
## per-session detection probability for an individual centred[#每个会话的探测概率的个人中心]
## at a corner trap. By default, noccasions = 5.[#在一个角落里的陷阱。默认情况下,noccasions = 5。]
pdot (c(0,0), temptrap, detectpar = list(g0 = 0.2, sigma = 25))
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。
|