Section 7 Conclusion

In conclusion, we hold the belief that the download counts can be a relatively simple and reliable measurement for popularity of CRAN R-packages, and there are many factors that could be linked to it, such as the popularity of the creator, the application fields, the release dates, whether to keep updated, and the lengths of their names. Anyway, we could generally believed that a relatively popular R-package should have earlier release date, shorter name and maybe more commits in Github repository if they have. There is also another point that could not be ignored : it is better to keep updated.