All functions |
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Arrange entries in data.frame |
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Return first non-missing element |
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Count observations by group |
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Select distinct/unique rows in data.frame |
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Additional useful functions |
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Join two data.frames by common columns. |
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'dplyr'-like interface for data.table. |
Filter entries in data.frame |
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Parse,inspect and extract `data.table` from `.fst` file |
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Count observations by group |
Modify, aggregate, select or filter data.frame/data.table |
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Convert data between wide and long forms |
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maditr: Pipe-Style Interface for 'data.table' |
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Dump or replace missing values in data.frame |
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Mutate columns in data.frame |
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Conditional update of columns in data.table |
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Nest and unnest |
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Pull out a single variable |
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One-to-one interface for data.table '[' method |
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Rename column in data.frame |
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Select column from data.frame |
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Slice rows in data.frame |
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Summarise columns to single values |
Select top (or bottom) n rows (by value) |