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akrun

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1527.10 (21,478th) 		Reputation
833,306 (14th)
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Title Δ
Replace elements in a big data.frame -1.43
How to filter data.frame which has more than n number of entries in... +1.47
Adding an extra row for each subject ID and maintaining the values... -0.64
R dataframe regular expression +2.30
Select only first or last value for each unique value in data table? 0.00
How can we rank rows of a matrix based on the mean of each column? 0.00
Creating edge list with additional variables in R +0.42
Compare previous list element using the apply function family R, ge... 0.00
Merging data in duplicated records in R -0.58
How to replace the elements of one data frame if they match another... -0.63
pasting together two vectors with expression command -0.57
Keeping only some rows of a matrix using one column as choice-maker... 0.00
How to remove rows starting with special character in R 0.00
How to subset data with several conditions in R? 0.00
Match two matrices by columns +0.43
Using Mean Function for a specified part of column of a matrix in R 0.00
R looping anova and pick data frame names from list 0.00
data.frame to list in R -1.18
list variables by group as character string in data frame column 0.00
cumsum and if-condition in dplyr in r not giving expected output 0.00
How to convert foreach in Stata to R? -1.04
grouping, comparing, and counting rows in r +1.84
r - merge and melt list to data frame -0.16
Partial group by statements to find the count for multiple instance... -1.36
How to DROP columns from ffdf object ? (R) -0.38
Conditional and/or nested ifelse mutate logic with dplyr 0.00
BTSCS data in R: create t -1.62
R: column sum in a data.table without for-loop 0.00
Strange behavior when replicating elements of a vector in R 0.00
How to print results of cat(sprintf()) without quotes in R? 0.00
Detect ranges from string of numbers -1.74
dummify variables in data table with dplyr 0.00
How to assign a value to a matrix created with assign() in R -2.10
Conditionally remove a row based on another id code +1.00
R: Update a column in a data.table 0.00
Data.table setDT functionality in ff/ffbase R packages 0.00
Selecting First instance of subject in long and wide file in R +0.43
Create a series of new columns with (d)plyr -2.00
New conditioned column in R data +1.92
Subsetting a data frame based on key spanning several columns in an... +0.38
Creating edge list in R -0.01
(R language) How to create empty ff data frame 0.00
Plotting Average/Median of each column in data frame grouped by fac... 0.00
R-new variables according to rank within groups -0.42
Change the color of a subset of group labels in a boxplot in R -1.15
if statement with dates in R +2.05
How to create an output with the number of observations in each row? +1.14
Barplot sum of observations in two groups in R +0.41
How do I speed up this for loop in r +0.37
R subset data.frame columns by group to maximize row values +1.27