Stack Exchange

Matthew Plourde

Philadelphia

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Top Questions
Top Answers
183
Merging a lot of data.frames
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150
Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.9.4 or earlier
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89
How to remove last n characters from every element in the R vector
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86
Convert Named Character Vector to data.frame
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79
Adding table within the plotting region of a ggplot in r
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52
How to pass command-line arguments when calling source() on an R file within another R file
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51
How to sort a character vector where elements contain letters and numbers in R?
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43
Extract non null elements from a list in R
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38
dplyr - using mutate() like rowmeans()
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37
'Reset inputs' button in shiny app
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37
R dplyr: rename variables using string functions
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37
How to coerce a list object to type 'double'
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37
How to sort a character vector according to a specific order?
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31
How to implement a cleanup routine in R Shiny?
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30
How to skip an error in a loop
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30
Checking if string is in uppercase in R
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30
How to connect R with Access database in 64-bit Window?
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28
Capitalizing letters. R equivalent of excel “PROPER” function
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28
Change temporary directory
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28
Why is my recursive function so slow in R?
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28
What is the opposite of %in% in r
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27
R duplicate a matrix several times and then bind by rows together
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26
Add ID column by group
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25
Combine two lists in a dataframe in R
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22
How to append a plot to an existing pdf file
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21
Extract all numbers from a single string in R
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20
How to extract elements from list of lists
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19
Source only part of a file
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19
ggsave losing unicode characters from ggplot+gridExtra
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19
How to annotate() ggplot with latex
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