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Jota

Rating
1518.95 (34,112th) 		Reputation
13,765 (10,429th)
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Title Δ
Select rows by criteria in another data.frame without for loop in R +1.18
Extracting a value from a row that has the closest date before or e... 0.00
How to count unique values for each row in a table in R? +1.58
R sum a list of multiple data frames by index (date) -3.27
summing elements of a column given certain conditions -3.68
Split strings using a pattern -4.15
General expression for creating an equal length lag dataframe 0.00
Efficient ways to display/scroll through large R objects 0.00
Removing values if they duplicate in two subsequent rows -2.54
compare the first and last observation in each group -0.43
Split column with multiple delimiters -3.66
Remove repeated values in one column using R 0.00
Zeroing some entries of matrix parallel to matrix diagonal in R +2.13
Converting matrix into scatterplot +0.08
R: Select value from a different column for each row -4.35
Extracting columns from dataframes in a list to produce a final, co... -3.54
How to create a vector of sequences based on a vector of lengths 0.00
index table by name in R +1.36
Decrease vertical thicknes of bars in Likert Chart R 0.00
how to convert a JPEG to an image matrix in R 0.00
Creating an empty data frame in R -3.65
Reshape matrix to data frame 0.00
output column index based on each row in data.frame R +4.13
Creating subset of rows depending on multiple values in one column -0.33
Histogram in R from a frequency table with two columns? 0.00
R: how to match partial string in one dataframe from another, and b... -4.14
Extract elements from the name of an object -0.28
Edge Detection, Image Manipulation, and Final Data Extraction in R +0.20
How to compare two adjacent strings in one column and traverse all... -1.87
R: Using the predict function to add standard error and confidence... 0.00
How to have only every other border in a persp -1.42
Removing all dashes apart from the ones within words R -1.56
Extracting string inbetween two string patterns in R -3.34
How to replace characters in a big dataframe in r -3.26
Finding the first day of specific months in R +5.06
R: How do I multiply a lower dimension data frame with a higher one... 0.00
R: use one list to modify another list efficiently +0.22
Combine/merge lists by elements names (list in list) -2.49
how to average based on time +0.13
How to keep a column of dataframe as dataframe +4.87
Finding the intersection and differences in data using R 0.00
Detecting number repetition in R using regex -2.21
Subset a matrix by element and keep values as a matrix 0.00
How can I delete the last two elements from series characters (colu... -3.72
Format vector into autoregressive matrix 0.00
Add a column for counting unique tuples in the data frame -1.78
number elements in a vector with constraints 0.00
Seasonal aggregate of monthly data -0.71
replicate merging and frequency calculation of dataframe in R +0.49
Introduce rows from a file to another file every other row +3.26