# Apply-style commands in R

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Here’s a quick table of what I think are the most useful apply-style commands in R: **The Data Monkey**, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

Function | Input | Output | Best for |

apply | Rectangular | Rectangular or vector | Applying function to rows or columns |

lapply | Anything | List | Non-trivial operations on almost any data type |

sapply | Anything | Simplified (if possible) or list | Same as lapply, but with simplified output |

plyr::ddply | data.frame | data.frame | Applying function to groupings defined by variables |

To

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