540 search results for "API r programming"

Accessing APIs from R (and a little R programming)

November 26, 2015
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(This article was first published on Turning numbers into stories, and kindly contributed to R-bloggers) Working with APIs Christoph Waldhauser 22/11/2015 APIs are the driving force behind data mash-ups. It is APIs that allow machines to access data programmatically – that is automatically from within a program – to make use of API provided functionalities and data. Without APIs...

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Linear programming in R: an lpSolveAPI example

July 14, 2012
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Linear programming in R: an lpSolveAPI example

First of all, a shout out to R-bloggers for adding my feed to their website! Linear programming is a valuable instrument when it comes to decision making. This post shows how R in conjunction with the lpSolveAPI package, can be used to build a linear programming model and to analyse  Read more »

Web Scraping the NFL Draft

February 21, 2017
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Web Scraping the NFL Draft

Introduction The National Football League (NFL) is big business. How big? The average value of each of the 32 teams is $3.2 billion. Clearly, Americans love pro The post Web Scraping the NFL Draft appeared first on NYC Data Science Academy Blog.

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What Programming Languages Are Used Most on Weekends?

February 6, 2017
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What Programming Languages Are Used Most on Weekends?

Note: Cross-posted with the Stack Overflow blog. Check out the code for this analysis on Kaggle. For me, the weekends are mostly about spending time with my family, reading for leisure, and working on the open-source projects I am involved in. These w...

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Using CPLEX in R: Installing cplexAPI in Windows 10

January 26, 2017
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Using CPLEX in R: Installing cplexAPI in Windows 10

I have a very large mixed integer problem to solve.   COIN‘s solver accessed through Rsymphony did a decent job, but had trouble finding feasible solutions.  I had been told that the IBM cplex  solver was the best on the market for mixed integer programming. Installing cplex is a relatively easy task.  The difficulties began when I … Continue...

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New course: Object-Oriented Programming in R: S3 and R6

January 16, 2017
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New course: Object-Oriented Programming in R: S3 and R6

Our newest course, Object-Oriented Programming in R: S3 and R6 taught by Richie Cotton is now available! Object-oriented programming (OOP) lets you specify relationships between functions and the objects that they can act on, helping you manage comple...

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Scraping Web sources: Two illustrations

Scraping Web sources: Two illustrations

Per request from a couple of students in a course on open data that I contribute to, here’s a short guide to the “why” and “how” questions about (Web) scraping, with links to examples to illustrate the usefulness of the technique. What is scraping? (Web) Scraping consists in writing computer code to automate the download and/or parsing of online data...

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Optimization matchup: R’s glpkAPI vs Julia’s JuMP

December 5, 2016
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tl;dr: although I use R every day and love it, doing mathematical programming using Julia is much simpler and more flexible than anything I know that is currently available in R.Recently I have learned that Iain Dunning and Joey Huchette and Miles Lubin have received 2016 INFORMS Computing Society prize for the development of JuMP, a Julia-based domain-specific modeling...

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Learning R programming by reading books: A book list #rstats

November 26, 2016
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Learning R programming by reading books: A book list #rstats

R is an open-source software package and rapidly increases its popularity in both industry and academics. Google trend is probably the best tool to show you how popular R is since it allows us to rank the search interest among five major statistical so...

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Webscraping with rvest: So Easy Even An MBA Can Do It!

November 6, 2016
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Webscraping with rvest: So Easy Even An MBA Can Do It!

This is the fourth installment in our series about web scraping with R. This includes practical examples for the leading R web scraping packages, including: RCurl package The post Webscraping with rvest: So Easy Even An MBA Can Do It! appeared first on ProgrammingR.

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