shorth(genefilter)
shorth()所属R语言包：genefilter
A location estimator based on the shorth
上基于shorth的一个位置估计
译者：生物统计家园网 机器人LoveR
描述----------Description----------
A location estimator based on the shorth
上基于shorth的一个位置估计
用法----------Usage----------
shorth(x, na.rm=FALSE, tie.action="mean", tie.limit=0.05)
参数----------Arguments----------
参数：x
Numeric
数字
参数：na.rm
Logical. If TRUE, then non-finite (according to is.finite) values in x are ignored. Otherwise, presence of non-finite or NA values will lead to an error message.
逻辑。如果TRUE，然后非有限（根据is.finite）值x被忽略。否则，非有限或NA值的存在，将导致一个错误消息。
参数：tie.action
Character scalar. See details.
字符标。查看详情。
参数：tie.limit
Numeric scalar. See details.
数字标。查看详情。
Details
详情----------Details----------
The shorth is the shortest interval that covers half of the values in x. This function calculates the mean of the x values that lie in the shorth. This was proposed by Andrews (1972) as a robust estimator of location.
shorth是在最短的时间间隔覆盖x的值的一半。此函数计算平均x值躺在shorth。这是安德鲁斯（1972）提出，作为一个强大的位置估计。
Ties: if there are multiple shortest intervals, the action specified in ties.action is applied. Allowed values are mean (the default), max and min. For mean, the average value is considered; however, an error is generated if the start indices of the different shortest intervals differ by more than the fraction tie.limit of length(x). For min and max, the left-most or right-most, respectively, of the multiple shortest intervals is considered.
关系：如果有多个最短的时间间隔，指定在ties.action行动应用。允许值mean（默认），max和min。 mean，平均值;然而，则会产生一个错误，如果不同的最短时间间隔开始指数分数tie.limitlength(x)不同。 min和max，最左边或最右边，分别多个最短的时间间隔，被认为是。
Rate of convergence: as an estimator of location of a unimodal distribution, under regularity conditions, the quantity computed here has an asymptotic rate of only n^{-1/3} and a complicated limiting distribution.
收敛速度，数量计算位置的单峰分布规律的条件下，估计这里有一个唯一n^{-1/3}和一个复杂的极限分布渐近率。
See half.range.mode for an iterative version that refines the estimate iteratively and has a builtin bootstrapping option.
看到half.range.mode一个迭代版本，细化预算反复，并有一个内置的引导选项。
值----------Value----------
The mean of the x values that lie in the shorth.
平均x值躺在shorth。
作者（S）----------Author(s)----------
Wolfgang Huber <a href="http://www.ebi.ac.uk/huber">http://www.ebi.ac.uk/huber</a>, Ligia Pedroso Bras
参考文献----------References----------
Available at http://lshorth.r-forge.r-project.org/TheShorthPlot.pdf
Princeton University Press (1972).
Statistics 16, 2:619-628 (1988).
estimator of the mode: Comparisons to other robust estimators with applications.” Computational Statistics & Data Analysis 50, 3500-3530 (2006).
参见----------See Also----------
half.range.mode
half.range.mode
举例----------Examples----------
x = c(rnorm(500), runif(500) * 10)
methods = c("mean", "median", "shorth", "half.range.mode")
ests = sapply(methods, function(m) get(m)(x))
if(interactive()) {
colors = 1:4
hist(x, 40, col="orange")
abline(v=ests, col=colors, lwd=3, lty=1:2)
legend(5, 100, names(ests), col=colors, lwd=3, lty=1:2)
}
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。
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发表于 2012-2-25 18:47:30
