Sacha Epskamp

Amsterdam, The Netherlands

Age: 28

I am a PhD-student at the University of Amsterdam, department of Psychological methods. For more information please see my website:

http://sachaepskamp.com

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Structure of an R course for beginners

r asked Jun 20 '11 at 12:36

stackoverflow.com

20 votes

Create pdf with tooltips in R

pdf r tooltips asked Jan 14 '11 at 13:56

stackoverflow.com

19 votes

Dynamically count and return number of words in a section

sweave word-count asked Feb 15 '12 at 9:22

tex.stackexchange.com

16 votes

R: How to measure similarity between strings?

regex string r r-faq asked May 18 '11 at 11:43

stackoverflow.com

14 votes

Check if character string is a valid color representation

r asked Nov 8 '12 at 12:19

stackoverflow.com

14 votes

What is a good setup for LaTeX and R?

software-recommendation ide latex r asked May 23 '11 at 15:07

askubuntu.com

13 votes

Is there a R function that applies a function to each pair of columns?

r apply plyr asked Mar 8 '11 at 13:44

stackoverflow.com

13 votes

ggplot2: Overlay histogram with density curve

r ggplot2 qplot asked Apr 16 '11 at 16:55

stackoverflow.com

12 votes

How to properly use functions from other packages in a R package

r namespaces package asked Mar 10 '11 at 13:11

stackoverflow.com

11 votes

Hide other SE accounts

feature-request support user-accounts linked-accounts asked Dec 12 '11 at 21:41

meta.stackoverflow.com

Top Answers

How to make a great R reproducible example?

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R: Creating graphs where the nodes are images

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Opposite of %in%

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How to save a data.frame in R?

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R demos for presentation

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How to disable scientific notation in R?

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where is a good tutorial on creating an R package with C++ source code?

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How to rewrite a “sapply” command to increase performance?

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R - fastest way to detect if vector has at least 1 NA?

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Shaded area under two curves using R

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Downloading Live Olympic Medal Data into R

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Create “arty” mosaic pictures with R (*not* statistical mosaic plots)

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In R, what exactly is the problem with having variables with the same name as base R functions?

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R / Sweave formatting numbers with \Sexpr{} in scientific notation

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Function in R to measure function execution time

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save an R dataframe with the name specified by a string

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Difference between 1:10 and 0.1:1.0

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find and replace characters before “:”

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Efficient multiplication of columns in a data frame

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How to control the igraph plot layout with Fixed Positions?

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combining unequal columns in R

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R, correlation: is there a func that converts a vector of nums to a vector of standard units

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What's a good strategy to get a decent overview of big correlation matrices or pairs?

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Get Emacs to ignore contents of \Sexpr{} command in Sweave document to prevent incorrect $-based syntax highlighting

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How to find where an R error occurred?

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Force apply to return a list

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Can I calculate z-score with R?

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R function argument naming. sigm2 = sigm2_prior?

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Draw Network in R (control edge thickness plus non-overlapping edges)

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Extracting hashtags in several tweets using R

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