2011年6月9日 · Often data on webpages is in the form of an XML table. You can read an XML table into R using the package XML. In this package, the function. readHTMLTable(<url>) will look through a page for XML tables and return a list of data frames (one for each table found).

想直接从类似 Index of /src/contrib 的网址安装包，这些东西在 CRAN 或者 GITHUB 都没有，但是放在本地的时候安装出了点问题，现在提供一个直接安装的方法： 需要划重点的地方是，method = "libcurl"，这个方法在本地安装包也可以使用。 感谢： 作者：黄天元，复旦大学博士在读，热爱数据科学与开源工具（R），致力于利用数据科学迅速积累行业经验优势和科学知识发现，涉猎内容包括但不限于信息计量、机器学习、数据可视化、应用统计建模、知识图谱等，著有…

2016年3月11日 · I recently installed R Studio (Version 0.99.892) on a personal computer (windows 8) and am trying to install, among others, the following packages: ggplot2; dplyr; rmarkdown; tidyr. Neither R nor R Studio is able to install any of these packages.

CRAN (The Comprehensive R Archive Network) 镜像源配置文件之一是 .Rprofile (linux 下位于 ~/.Rprofile)。 在文末添加如下语句： options("repos" = c(CRAN="{{endpoint}}/"))

We have improved the URL schema for the r-universe.dev front-end to make it even easier to find and share a link to an R package, article, API, or other resource. The old URLs will now automatically be redirected to the new locations, so this should be a non-breaking change.

some functionality for supporting more general inputs will be pulled out of readr, at which point readxl can exploit that. So we should be able to pass urls directly to read_excel() in the (hopefully near) future. As of August 2020, this issue is still open. Subsequently, read_excel() will not yet read .xls files directly from the web.

2021年11月30日 · urlchecker: Run CRAN URL Checks from Older R Versions. Provide the URL checking tools available in R 4.1+ as a package for earlier versions of R. Also uses concurrent requests so can be much faster than the serial versions.

2025年2月28日 · R is a free software environment for statistical computing and graphics. It compiles and runs on a wide variety of UNIX platforms, Windows and MacOS. To download R, please choose your preferred CRAN mirror.

The Research Project (R01) is NIH's most commonly used grant program for independent research projects. Are you an early stage investigator (ESI)?

2025年2月14日 · 规则中的{R:1}和{R:2}是啥意思？ 在IIS的URL重写模块中，{R:N} 是一种反向引用（back-reference），用于引用通过正则表达式捕获的特定部分。这里的 N 是一个数字，表示捕获组的索引。