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Xu Wang

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Top Questions

world map - map halves of countries to different colors

r map ggplot2 asked Nov 4 '12 at 14:26

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if ( ) < /dev/null

bash unix asked Sep 11 '12 at 6:28

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debugging a function in R that was not exported by a package

debugging r asked Oct 2 '11 at 8:04

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matrix %in% matrix

r asked Oct 30 '11 at 7:02

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cbind a df with an empty df (cbind.fill?)

r asked Nov 1 '11 at 3:48

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Perl-style quotes for long strings in C++

c++ perl latex asked Jan 22 '12 at 4:45

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C++ regex not understanding

c++ regex asked Jun 5 '12 at 6:51

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is ifelse ever appropriate in a non-vectorized situation and vice-versa?

r asked Nov 18 '11 at 23:10

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paste method for a dataframe

r asked Nov 2 '11 at 21:45

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How do I report a typo (by sending a diff file)?

r asked Nov 6 '11 at 3:37

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Top Answers

Extracting the last n characters from a string in R

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Splitting a string on the first space

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Why does R need the name of the dataframe?

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Discarding a single attribute in R

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Silencing a package load message in Sweave

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What hardware limits plotting speed in R?

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How to stop a running R command in linux other than ctrl+c?

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what is the “class” parameter in structure()?

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Error writing to csv

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Awk script in R

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lapply() when function returns NULL

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