Transcription

1 Developing a R Validation Framework

2 Agenda ValidR Enterprise The R development challenge The Mango development environment Benefits

3 ValidR Enterprise A validated version of R for use in regulated environments Allows development and incorporation of your own packages Based around the Mango Development Environment

4 THE R DEVELOPMENT CHALLENGE

5 Mango Customers Statisticians, data scientists, Come from a variety of industries Are regulated by a number of different agencies Mango customers are using R to solve a variety of different problems

6 What the Customer Wants from Mango Help to analyse data To simplify a process Support Validation To audit us on a regular basis!

7 What Challenge do we Face? Statisticians write code every day But we are not trained to write code We are not taught about: Version control Unit testing Continuous integration

8 The Solution We have a development team who are trained to write code Let s see what we can learn from them

9 THE MANGO DEVELOPMENT ENVIRONMENT

10 The Mango Development Environment Key requirements: Build R packages Maintain R packages Other considerations: Collaboration Integration with business process Audit trail

11 Version Control The Mango model is driven by collaboration Multiple consultants working on the same code base Need to know what each person is doing and why Version control underpins everything we do

12 The Mango Model Everything begins with version control

13 Integrated Development Environment Helps to use the same IDE Integration with version control is key StatET for formal development RStudio for prototyping / training

14 The Mango Model IDEs connect with SVN

15 Documentation Facilitated help documentation via roxygen2 Sensible function naming helps Quick start guides via vignette Automated validation documentation knitr

16 Testing Must be able to prove that the package does what it is supposed to! Mango write our tests before writing the code! The R Journal Vol. 3/1, June 2011

17 Testing Now publically available: Test coverage level can be checked with testcoverage

18 The Mango Model R Packages Sweave knitr testthat testcoverage devtools Building R Packages: - Test Framework - Documentation

19 Building / Continuous Integration Customers use: Different environments / operating systems Different versions of R Scripted build process Each package has its own build environment Packages pulled from internal CRAN

20 Other Benefits of Jenkins

21 The Mango Model R Packages Sweave knitr testthat testcoverage devtools Continuous Integration ValidR Enterprise

22 The Mango Model Process Management Bug tracking R Packages Sweave knitr testthat testcoverage devtools Continuous Integration Code Review Knowledge Management ValidR Enterprise

23 BENEFITS

24 Benefits of the Development Environment System provides a complete picture of a project Provides a very simple mechanism for deployment Traceable - keeps auditors very happy

25 The Future Deployment of development environment features to VRE Continuous review Learn more from other languages Review of build / test process

26 Summary Learned from the development team Implemented a successful structure for managing code development Continuously looking to adapt and improve Become a vital component of ValidR Enterprise

27 Questions? MangoTheCat