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Rating Stats for

David Arenburg

Rating
1732.38 (66th) 		Reputation
80,581 (1,024th)
Page: 1 ... 11 12 13 14 15 ... 33
Title Δ
Add columns with predefined values to a dataframe +0.88
Merge different colums of data frames to create new and then a list 0.00
Generate pairings within World Cup tournament groups -2.05
Simultaneous order, row-filter and column-select with data.table 0.00
How do I take a rolling product using data.table +0.78
How to split a string between two character into sub groups in R -0.22
R spreading multiple columns with tidyr 0.00
Error when I used R to Convert basket data format to single format 0.00
Count the number of consecutive pairs in a vector +0.63
Collapse dataframe by name, where integer columns are summed and fa... +0.85
How to sum up monthly values for 5 years? (To fit a univariate time... 0.00
Turn parsed corpus into data frame using stringr and regex 0.00
convert slash to division +1.68
r add columns in df1 with count of rows in df2 (conditional) +1.37
Use Order on Aggregate(in a single statement) +0.03
R table manipulation +0.28
How to extract keywords from Google search results page URL? +0.79
dplyr rename not working with regular expression 0.00
How to extract specific rows in R? -0.54
R: Add two data frames with same dimensions +0.27
Conditional row removal in an R data frame -2.29
How to make time difference in same units when subtracting POSIXct 0.00
Create difference matrix from data frame in R 0.00
Alternatives to nested ifelse statements in R +0.81
looping over variable names in R -0.08
Subset data frames inside of a list based on column classes +1.12
storing results of a for function in list or +0.38
Manipulating Data Frame in R by ID +1.72
Find regular expression in one column and add to a new column in sa... +1.60
Convert columns i to j to percentage +1.74
R convert date column into gregorian calendar +1.75
Subdivide elements of a list into separate columns 0.00
Extracting event types from last 21 day window +0.69
dplyr summarize: create variables from named vector +0.96
Remove entire list elements which contain a certain string +0.31
Cumulative total by group -1.01
Complex data reshaping in R -0.28
Combine a function and for loop -1.84
Reshape from long to wide format +0.38
R sum of rows for different group of columns that start with simila... +0.74
logical dataframe with numerical dataframe and substitute FALSE by... 0.00
Combing multiple variables into a new variable in R -0.17
Calculating time difference by ID in r +1.16
Frequencies per factor in R using data.table +0.27
Changing values on one dataframe based on data in another dataframe -0.43
(Efficiently) merge random keyed subset -1.73
Replace Inf in R data.table / Show number of Inf in colums 0.00
calculate the median across several vectors -0.31
subset data.frame and calculate the frequency +0.56
making a from, to network in three column data frame in r +1.18