After scraping reviews from Goodreads in the first installment of this series, we are now ready to do some exploratory data analysis to get a better sense of the data we have. This will also allow us to create features that we will use in future analyses. Setup and data ... [Read more...]

A common problem is to forecast the aggregate of several time periods of data, using a model fitted to the disaggregated data. For example, you may have monthly data but wish to forecast the total for the next year. Or you may have weekly data, and wan... [Read more...]

Claims of “the end of geography” and the flatness of the world notwithstanding, place still matters today. Discussing why place matters is somewhat beyond the scope of this post, so I will direct you to the excellent work of Parag Khanna and his book Connectography. To put it simply, the ... [Read more...]

Concept On a unix environment it is possible for a threaded java application to call a single RServe instance. For The post RServe Java multiple threads (Unix) appeared first on StudyTrails. [Read more...]

Concept There are two ways to source R script file in RServe Java program. The first way is to directly The post RServe Java Source R script appeared first on StudyTrails. [Read more...]

Setup The steps to install and start RServe are shown in the previous tutorial. This tutorial explains how to create The post RServe Java example program appeared first on StudyTrails. [Read more...]

Related Tutorials First Sample Program Introduction RServe is an R package that allows other applications to talk to R using The post RServe – Introduction and Installation appeared first on StudyTrails. [Read more...]

This report describes changes in version 0.2 of the ‘DOM’ package for R. Version 0.1 of ‘DOM’ allowed HTML content to be added to a web page (or removed or modified); version 0.2 adds the ability to append SVG content to a web page. Paul Murrell Download [Read more...]

This report describes changes in version 0.2 of the ‘DOM’ package for R. Version 0.1 of ‘DOM’ allowed HTML content to be added to a web page (or removed or modified); version 0.2 adds the ability to append SVG content … Continue reading → [Read more...]

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I am happy to announce that my simputation package has appeared on CRAN this weekend. This package aims to simplify missing value imputation. In particular it offers standardized interfaces that make it easy to define both imputation method and imputation … Continue reading → [Read more...]

A new version of the OpenStreetMap package has been released to CRAN. OpenStreetMap 0.3.3 contains several minor improvements. I've removed the CloudMade tile set types, as they seem to have gone out of business. MapQuest has also been removed as they have moved to a new API. The mapbox type has ... [Read more...]

by Jaya Mathew, Data Scientist at Microsoft By using R Services within SQL Server 2016, users can leverage the power of R at scale without having to move their data around. Such a solution is beneficial for organizations with very sensitive, big data which cannot be hosted on any public cloud ... [Read more...]

The independent t test is used to test if there is any statistically significant difference between two means. Use of an independent t test requires several assumptions to be satisfied. The assumptions are listed below The variables are continuous and independent The variables are normally distributed The variances in each ... [Read more...]

imager is an R package for image processing, based on CImg. This new release brings many new features, including: Support for automatic parallel processing using OpenMP. A new S3 class, imlist, which makes it easy to work with image lists New functions for interactively selecting image regions (grabRect,grabPoint,grabLine) ... [Read more...]

anytime just arrived on CRAN as a very first release 0.0.1. So why (yet another) package dealing with dates and times? R excels at computing with dates, and times. By using typed representation we not only get all that functionality but also of the a... [Read more...]

In this post, I will show you how to create an animation using R and ffmpeg. The idea to do so is pretty simple: Generate a number of snapshots Combine them in a video file using ffmpeg The best way to learn about the art of animation is by doing ... [Read more...]

In this tutorial we will look at Reshape R package, reshape2, melt and cast functions. Reshape R package – Introduction The post Reshape R package, reshape2, melt and cast appeared first on StudyTrails. [Read more...]

In the previous tutorial we looked at printing R objects using the print and cat functions. In this tutorial we The post Pretty printing in R using the Format function. appeared first on StudyTrails. [Read more...]

In this tutorial we look at functions to print values on R console or file.. The values are normally printed The post Print values on R console or file using cat() or print() appeared first on StudyTrails. [Read more...]