摘要:A huge number of packages dedicated to wide range of applications is available for R. Writing this article, there are more than 300 packages: base and recommended packages, CRAN1 packages, packages from the Omegahat2 and BioConductor3 projects, as well as a couple of other packages. This shows that package management is really important. A recent summary of existing packages is published in the R FAQ by Hornik (2003). Convenient tools for developing, checking, installing, updating and removing packages are available in R. Therefore, users and developers can easily handle packages. This is one of the main reasons for R’s rapid growth.