971 search results for "how to import image file to R"

R: How to Layout and Design an Infographic

February 26, 2015
By
R: How to Layout and Design an Infographic

As promised from my recent article, here's my tutorial on how to layout and design an infographic in R. This article will serve as a template for more infographic design that I plan to share on future posts. Hence, we will go through the following sect...

Read more »

RMySQL version 0.10.2: Full SSL Support

February 25, 2015
By
RMySQL version 0.10.2: Full SSL Support

RMySQL version 0.10.2 has appeared on CRAN. This is a maintenance release to streamline the build process on various platforms. Most importantly, the Windows/OSX binary packages from CRAN are now built with full SSL support. On Linux, the configure script has been updated a bit to automatically find the mysql client library. A...

Read more »

RStudio v0.99 Preview: Data Viewer Improvements

February 24, 2015
By
RStudio v0.99 Preview: Data Viewer Improvements

RStudio’s data viewer provides a quick way to look at the contents of data frames and other column-based data in your R environment. You invoke it by clicking on the grid icon in the Environment pane, or at the console by typing View(mydata). As part of the RStudio Preview Release, we’ve completely overhauled RStudio’s data

Read more »

The United States In Two Words

February 20, 2015
By
The United States In Two Words

Sweet home Alabama, Where the skies are so blue; Sweet home Alabama, Lord, I’m coming home to you (Sweet home Alabama, Lynyrd Skynyrd) This is the second post I write to show the abilities of twitteR package and also the second post I write for KDnuggets. In this case my goal is to have an insight of … Continue reading...

Read more »

Bayesian statistics and clinical trial conclusions: Why the OPTIMSE study should be considered positive

February 16, 2015
By
Bayesian statistics and clinical trial conclusions: Why the OPTIMSE study should be considered positive

Statistical approaches to randomised controlled trial analysis The statistical approach used in the design and analysis of the vast majority of clinical studies is often referred to as classical or frequentist. Conclusions are made on the results of hypothesis tests with generation of p-values and confidence intervals, and require that the correct conclusion be drawn

Read more »

Customer segmentation – LifeCycle Grids with R

February 16, 2015
By
Customer segmentation – LifeCycle Grids with R

I want to share a very powerful approach for customer segmentation in this post. It is based on customer’s lifecycle, specifically on frequency and recency of purchases. The idea of using these metrics comes from the RFM analysis. Recency and frequency are very important behavior metrics. We are interested in frequent and recent purchases, because frequency... Read More »

Read more »

How-to go parallel in R – basics + tips

February 16, 2015
By
How-to go parallel in R – basics + tips

Today is a good day to start parallelizing your code. I've been using the parallel package since its integration with R (v. 2.14.0) and its much easier than it at first seems. In this post I'll go through the basics for implementing parallel computations in R, cover a few common pitfalls, and give tips on how to avoid them....

Read more »

Introduction to OpenCPU for R on EC2 with Python

February 15, 2015
By
Introduction to OpenCPU for R on EC2 with Python

OpenCPU is (simply put) a server implementing a RESTful web API for remotely executing R functions and retrieving results. In this tutorial I am going to showcase how OpenCPU can be installed on an EC2 instance running Ubuntu 14.04. Python and … Continue reading →

Read more »

translate2R and translateSPSS2R: Implanting SPSS functionality into R

February 12, 2015
By
translate2R and translateSPSS2R: Implanting SPSS functionality into R

In this blog article from October 2014, we gave a brief introduction to translate2R explaining the main reasons for as well as advantages of translate2R. Now, we want to showcase the inner workings of this migration process with a focus on the R environment and the respective R package translateSPSS2R. Furthermore, we will also show

Read more »

More on Quadratic Progarmming in R

February 10, 2015
By
More on Quadratic Progarmming in R

This post is another tour of quadratic programming algorithms and applications in R. First, we look at the quadratic program that lies at the heart of support vector machine (SVM) classification. Then we'll look at a very different quadratic programming demo problem that models the energy of a circus tent. The key...

Read more »