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 vctrs.r-lib.org
Retrieve and repair names vec_as_names vctrs
| | purrr.tidyverse.org
Map over two inputs - map2 purrr
2.8 parsecs away

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| | These functions are variants of map() that iterate over two arguments at a time.
| | readr.tidyverse.org
Read a delimited file (including CSV and TSV) into a tibble - read_delim readr
5.8 parsecs away

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| | read_csv() and read_tsv() are special cases of the more general read_delim(). They're useful for reading the most common types of flat file data, comma separated values and tab separated values, respectively. read_csv2() uses ; for the field separator and , for the decimal point. This format is common in some European countries.
| | dplyr.tidyverse.org
Keep or drop columns using their names and types select dplyr
1.3 parsecs away

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| | Select (and optionally rename) variables in a data frame, using a concise mini-language that makes it easy to refer to variables based on their name (e.g. a:f selects all columns from a on the left to f on the right) or type (e.g. where(is.numeric) selects all numeric columns). Overview of selection features Tidyverse selections implement a dialect of R where operators make it easy to select variables: : for selecting a range of consecutive variables. ! for taking the complement of a set of variables. & ...
| | ddarmon.github.io
MA 151-01 Statistics with Applications (Fall 2018)
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