How to join data frames in R (inner, outer, left, right)?
Given two data frames df1 = data.frame(CustomerId=c(1:6),Product=c(rep(“Toaster”,3),rep(“Radio”,3))) df2 = data.frame(CustomerId=c(2,4,6),State=c(rep(“Alabama”,2),rep(“Ohio”,1))) > df1 CustomerId Product 1 Toaster 2 Toaster 3 Toaster 4 Radio 5 Radio…
View More How to join data frames in R (inner, outer, left, right)?Text Mining the Complete Works of William Shakespeare
(This article was first published on Exegetic Analytics » R, and kindly contributed to R-bloggers) I am starting a new project that will require some serious…
View More Text Mining the Complete Works of William ShakespeareR Programming/Text Processing
http://en.wikibooks.org/wiki/R_Programming/Text_Processing This page includes all the material you need to deal with strings in R. The section on regular expressions may be useful to…
View More R Programming/Text ProcessingR-substr, substring
Retrieve or replace a substring of a character string via the substr and substringfunctions. Additionally, these functions can be used to overwrite a part of a character string.…
View More R-substr, substringA Beginner’s Guide to Shooting Stereoscopic 3D
A Beginner’s Guide to Shooting Stereoscopic 3D May 1, 2010 by Tim Dashwood (revised September 10, 2011) 3D is back in style again and it…
View More A Beginner’s Guide to Shooting Stereoscopic 3DA newbie’s guide to UAVs
Posted by Chris Anderson on March 28, 2009 at 2:00pm View Blog What is an amateur UAV? An Unmanned Aerial Vehicle (UAV) is an aircraft…
View More A newbie’s guide to UAVs如何作好研究生
如何作好研究生–1.日常工作(翻译作品) 注意：本文是对Professor Marie desJardins的文章“How to Be a Good Graduate Student”的翻译。已经得到Professor Marie desJardins的翻译授权。如果转载，请注明本文的出处，及原作者的姓名。如要用于商业目的，请与原作者Marie desJardins联系。 Note: This is a translation of “How to Be a…
View More 如何作好研究生Advice on Research and Writing
Advice on Research and Writing A collection of advice about how to do research and how to communicate effectively (primarily for computer scientists). Writing and…
View More Advice on Research and WritingReviewing Papers: A Student Guide
Reviewing Papers: A Student Guide by Robin Murphy Why Review? When you read a conference paper (aka “paper”) or journal article (aka “article”), you should evaluate…
View More Reviewing Papers: A Student GuideGetting an academic job
Getting an academic job by Michael Ernst (mernst@cs.washington.edu) May, 2000 Last updated: December 3, 2012 Contents: Other sources of advice Before applying Applying Setting up the interview…
View More Getting an academic job