Ricardo Saporta

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Ricardo Saporta has asked 73 questions and find answers to 301 problems.

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Ricardo Saporta questions

Speeding up a function: checking NA count before computing mean
Finding all matches in a vector in a data.table
faster alternative to object.size?
Regex \x96 -like characters
force Division by zero default to NaN instead of Inf
`setattr` on `levels` preserving unwanted duplicates (R data.table)
Modify auto_match of quotes, adding an additional quoting character to Sublime Text 2
regex for preserving case pattern, capitalization
Why do string commands via `R -e ..` on Mac vs Linux requires an extra escape?
Stylize or format text in R Shiny Server

Ricardo Saporta answers

How can I make the abscissa (i.e. the grid line y=0) appear darker or bolder in ggplot2?
Reshape in R without aggregation (for example MTurk response strings)
Reduce several large tab delimited matrices based on rows and columns using awk
One-to-Many Left Join / Merge in Data.Table in R
Why does mapply repeat the same list multiple times?
Closures - differences between R and Javascript
Algorithm for combining numbers into optimal groups which do not exceed a vector of max values?
Push plot legend up slightly in R
Create vector satisfying two factor conditions in a data frame
R applying a function to a subset of a data frame [duplicate]