Alex

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Alex has asked 64 questions and find answers to 41 problems.

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Alex questions

Filter window with dplyr: find matching row, and keep subsequent N rows
Return root domain from url in R
Reorder columns in a 'canonical' way after mutate_each or summarise_each
Subsetting vector: how to programatically pass negative index safely?
Explicit formula used in linear regression
How do I label plot tick marks using ggvis
Correlation of subsets of dataframe using aggregate
How to handle pipes producing empty data further down the dplyr pipeline
How do I see the help for the `dplyr::collect` method?
What is this error: File does not exist error with roxygenise?

Alex answers

Why does this code double transpose a vector - is this a noop?
Function name in single quotation marks in R
How do I see the help for the `dplyr::collect` method?
Is there any authoritative documentation on R release nicknames?
Is there a dplyr equivalent to data.table::rleid?
Gather multiple sets of columns
Function to split a matrix into sub-matrices in R
R: How to find non-sequential elements in an array
Parameters and NULL
Using R, Randomly Assigning Students Into Groups Of 4