crazybilly

crazybilly has asked 54 questions and find answers to 10 problems.

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doing data analysis, reporting and modeling at a small, private university.

crazybilly questions

How to join a data frame to itself within a dplyr chain?
How do I use the ebook functions epub_book and kindlegen() for existing bookdown documents?
Purrr::map_df() drops NULL rows
Is there an equivalent of "&" in R's regular expressions for backreference to entire match?
Count how many values in some cells of a row are not NA (in R)
Using any() vs | in dplyr::mutate
How do I use magrittr::inset()?
What distinguishes dplyr::pull from purrr::pluck and magrittr::extract2?
How to pass a named vector to dplyr::select using quosures?
How do I invert the helper functions for dplyr::select?

crazybilly answers

How to control new variables' names after tidyr's spread?
How to join a data frame to itself within a dplyr chain?
Purrr::map_df() drops NULL rows
ifelse & grepl commands when using dplyr for SQL in-db operations
How to prevent RMySQL warnings "Unsigned INTEGER in col imported as numeric"?
Using any() vs | in dplyr::mutate
R: Check if value from dataframe is within range other dataframe
How do I invert the helper functions for dplyr::select?
collect only if query returns less than n_max rows