原文:How to use igraph vertex.shape functionality
是否有任何人使用图表。 形状功能? http://cneurocvs.rmki.kfki.hu/igraph/doc/R/igraph.vertex.shapes.html很有希望,但我无法理解。 任何人都有这样的榜样......
原文:Using Plyr in R with a complex function that returns multiple variable
我有一套数据,有三种分类变量:状况、次和延迟。 这里是我的数据的简化版本(实时数据更长)。
原文:read.csv is extremely slow in reading csv files with large numbers of columns
我的档案有:例如,Csv有8 000栏×400 000字。 单体文件每栏都有一个显示器。 所有领域都包含0至10年的分类数值。 当我试图装载这一档案时......
原文:What are the R sorting rules of character vectors?
R sorts character vectors in a sequence which I describe as alphabetic, not ASCII. For example: sort(c("dog", "Cat", "Dog", "cat")) [1] "cat" "Cat" "dog" "Dog" Three questions: What is the ...
原文:How to calculate returns from a vector of prices?
我必须计算出一个能够提供历史系列存货的病媒的回报。 病媒形式如下:
原文:Can I remove an element in ... (dot-dot-dot) and pass it on?
是否可能从......中删除一个要素,并将......纳入其他职能? 我的前两次尝试失败了:
原文:Function to retain rows with >= 1 NA value (opposite of na.omit)
是否有一种功能,使至少一只北美人留有,如果没有国民,则会丢弃。 我尝试了!na.omit()但那是徒劳的。
原文:R: How to get the p-value (for getting x < 2) for a population (modeled by a combination of three normal distributions)?
由于对我前一个职位作出了令人 wonder的回答,我使用了下文链接中规定的程序,使我的数据与三个正常分布相适应:
原文:trying to remove all margins so that plot region comprises the entire graphic
I am trying to remove all margins and the "figure region" of a plot in R, so that the plot region comprises the entire graphic device. I thought the code below would do it, but there is still a ...
原文:An elegant way to count number of negative elements in a vector?
我有1024个数值的数据矢量,需要计算消极条目的数量。 如果某一项内容为<0项并加固......,则在不进行住宿和检查的情况下,是否有这样做的有利途径?
原文:difference between auto.arima and ar for AR model selection in R
I get very different results when trying to find the best AR(p) model using these methods. ar {stats}: http://stat.ethz.ch/R-manual/R-patched/library/stats/html/ar.html auto.arima {forecast}: http:/...
原文:Tools for making latex tables in R [closed]
根据一般要求,一个社区维基将在R生产晚餐桌。 在该员额中,Ill概述了最常用的包裹和博客,这些包裹和博客的制作时间从较少......
原文:Reducing the dimensionality of a vector
How can I reduce the size of a vector to a lower dimension? Say for example X:=(1,2,3,4,5,6,7,8,9,10) is a 10-D vector. Suppose I want to reduce it to a 5 dimensional space. Is there any way to do ...
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