一.scale函数 R语言base库中自带数据标准化接口scale函数,函数介绍如下 Usage scale(x, center = TRUE, scale = TRUE) Arguments x: a numeric matrix(like object). center: either a logical value or a numeric vector of length equal to the number of columns of x. scale: either a logic
博客总目录:http://www.cnblogs.com/weibaar/p/4507801.html Tuesday, March 31, 2015 之前用rvest帮人写了一个定期抓取amazon价格库存,并与之前价格比较的小程序,算是近期写过的第一个完整的程序了.里面涉及了一些报错的处理. 这里主要参考了stackoverflow上的以下问答: How to skip an error in a loop skip to next value of loop upon error in R
R语言进行数据预处理wranging li_volleyball 2016年3月22日 data wrangling with R packages:tidyr dplyr Ground rules library(tidyr) library(dplyr) ## ## Attaching package: 'dplyr' ## The following objects are masked from 'package:stats': ## ## filter, lag ## The foll
Red hat Linux(Centos 5/6)安装R语言1 wget http://cran.rstudio.com/src/base/R-3/R-3.0.2.tar.gz2 tar xzvf R-3.0.2.tar.gz3 cd R-3.0.24 ./configure 5 make6 make install7 R http://cran.rstudio.com/