1. Lynn Yarmey National Snow and Ice Data Center Version 1.0 Review Date Writing and Sharing Readable Code

2. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Overview Why is writing and sharing readable code important? Tips for creating readable code

3. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Why is code sharing important? Reproducibility of science Someone else can build on your work Get credit in NSF Data Management Plans for work you already do “Much of the debate about code transparency involves the philosophy of science, error validation and research ethics, but our contention is more practical: that the cause of reproducibility is best furthered by focusing on the dissection and understanding of code, a sentiment already appreciated by the growing open-source movement.” (Ince, et al., 2012)

4. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Sharing your code Not at all With your advisor and lab By email if someone asks On your website Through an Institutional or Domain Repository As a publication see Open Research Computation JournalOpen Research Computation Through a code bank Ex. Geophysics Source Code ArchiveGeophysics Source Code Archive Lower Higher Funder Happiness

5. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Good coding practices Sharing doesn’t help if no one can read or understand your code

6. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Tips for Readable Code Use logical, clear names for variables and subroutines Add explicit comments Be platform-independent where possible Document the connections to data sets (which code is applied to what data?) Use a consistent versioning method

7. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Header Information In the header, include: Author name Original creation date Latest revision date with code version number Software version number Short description of the code Long description of the code

8. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Resources Matlab Programming Style Guidelines Perl Best Practices R Coding Conventions And many others…

9. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 References Anel, Juan A. (2011). Importance of Reviewing the Code. Communications of the ACM. Volume 5 (May 1). Retrieved from: http://cacm.acm.org/magazines/2011/5/107698-the- importance-of-reviewing-the-code/fulltext http://cacm.acm.org/magazines/2011/5/107698-the- importance-of-reviewing-the-code/fulltext Darrel C. Ince, Darrel C., Hatton, Leslie, & John Graham-Cumming. (2012). The case for open computer programs. Nature. 482, 485–488 (23 February). doi:10.1038/nature10836

10. Module Template: Subtitle; Version 1.0, Reviewed 9/15/11 Other Relevant Modules Data Management Plans