Ben Bolker

Hamilton, Canada

http://www.math.mcmaster.ca/bolker

mostly an R user these days

top accounts reputation activity subscriptions

two-column layouts in RStudio presentations/slidify/pandoc

r knitr rstudio rmarkdown slidify asked Dec 30, 2013 at 20:53

stackoverflow.com

37 votes

dplyr::mutate to add multiple values

r dplyr asked Apr 13, 2015 at 20:50

stackoverflow.com

29 votes

Names/salutations for international students of unknown gender

gender correspondence asked Jul 10, 2021 at 1:40

academia.stackexchange.com

26 votes

"Variable context not set" error with mutate_at, dplyr version >= 0.7

r dplyr asked Jun 25, 2017 at 21:19

stackoverflow.com

25 votes

how to tell if code is executed within a knitr/rmarkdown context?

r knitr rmarkdown asked Oct 13, 2015 at 16:27

stackoverflow.com

24 votes

quick/elegant way to construct mean/variance summary table

r aggregate plyr reshape2 asked Sep 16, 2011 at 18:58

stackoverflow.com

22 votes

using Unicode 'dingbat-like' glyphs in R graphics, across devices & platforms, especially PDF

r pdf graphics unicode asked May 4, 2011 at 15:37

stackoverflow.com

21 votes

adjusted bootstrap confidence intervals (BCa) with parametric bootstrap in boot package

r statistics-bootstrap asked Sep 28, 2011 at 19:17

stackoverflow.com

21 votes

Stanisław Lem story: why the stars are bunched

story-identification stanislaw-lem asked Apr 4, 2017 at 22:24

scifi.stackexchange.com

19 votes

best practices for avoiding roundoff gotchas in date manipulation

r date datetime lubridate asked Nov 21, 2017 at 21:09

stackoverflow.com

Top Answers

203

Convert a row of a data frame to vector

stackoverflow.com

169

how to delete a file with R?

stackoverflow.com

164

How to make a great R reproducible example

stackoverflow.com

154

How to randomize a vector

stackoverflow.com

149

How can I plot with 2 different y-axes?

stackoverflow.com

144

How can we make xkcd style graphs?

stackoverflow.com

126

Place a border around points

stackoverflow.com

124

Create a data.frame where a column is a list

stackoverflow.com

114

Creating a named list from two vectors (names, values)

stackoverflow.com

104

Passing list of named parameters to function?

stackoverflow.com

104

How to see the source code of R .Internal or .Primitive function?

stackoverflow.com

R Plotting confidence bands with ggplot

stackoverflow.com

Extract random effect variances from lme4 mer model object

stackoverflow.com

How to load packages in R automatically?

stackoverflow.com

How to obtain the p-value (check significance) of an effect in a lme4 mixed model?

stats.stackexchange.com

Splitting a continuous variable into equal sized groups

stackoverflow.com

Shading a kernel density plot between two points.

stackoverflow.com

Remove parenthesis from a character string

stackoverflow.com

How to assign a unique ID number to each group of identical values in a column

stackoverflow.com

Error: could not find function "unit"

stackoverflow.com

controlling order of facet_grid/facet_wrap in ggplot2?

stackoverflow.com

Finding local maxima and minima

stackoverflow.com

What is the difference between fixed effect, random effect and mixed effect models?

stats.stackexchange.com

How to skip error checking at Rmarkdown compiling?

stackoverflow.com

unzip a tar.gz file?

stackoverflow.com

How to model non-negative zero-inflated continuous data?

stats.stackexchange.com

How to draw a crystal ball with two-color particles inside

stackoverflow.com

How trustworthy are the confidence intervals for lmer objects through effects package?

stats.stackexchange.com

Consolidate duplicate rows

stackoverflow.com

Split up a dataframe by number of rows

stackoverflow.com