Whether you use R to access online databases in the cloud or want to scrape website data, it's always better to check if you are online before throwing numerous error and warning messages. I wrote this function to work with no additional R packages required. Also, this function is fast and transparent about what occurs when you use it.
This function was developed Read the entire article on PowerTrip Analytics
At Freakalytics, we frequently use R (often referred to as RStats) in our client projects and wanted to share our success using the RStudio Interactive Development Environment (IDE) with you. So, we created the RStudio® Keyboard Quick Reference by Freakalytics. It is available to you, compliments of Freakalytics, as a PDF and later in this article as a searchable data table.
The RStudio IDE was built by the team at RStudio to make you more productive in the R world. It is a free, open source application for Windows, Linux, Mac and UNIX desktop users. RStudio Desktop includes an interactive R console, a smart editor that supports direct code execution, graphing interfaces, code history, a debugger and project management for R code and related files.
Download the RStudio® Keyboard Quick Reference by Freakalytics. The reference card is available as a PDF download for your convenience. The PDF version is printable and usable in most e-book applications.
In addition the PDF version, we are pleased to share online access to the RStudio® Keyboard Quick Reference as a searchable data table (click here to access the searchable data table in a dedicated window.) This searchable data table has all the shortcuts from the PDF -and- advanced shortcuts not shown on the PDF version (which is one-page for newer users of R).