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Rating Stats for

David Arenburg

Rating
1732.38 (66th) 		Reputation
80,581 (1,024th)
Page: 1 2 3 4 5 ... 33
Title Δ
R subsetting with dplyr +1.27
Add prefix and suffix to list values R +0.59
Multiple consitions with str_extract r +0.22
Loop in R to match and extract data from other sheet +0.41
Set new variable NA if any other is NA +0.95
Add multiple columns simultaneously based on a sequence +0.34
Issues filtering dataframe since NA rows creep in +0.23
R change strings into numeric in a data frame +0.85
R subsetting rows where values in multiple columns don't match -0.78
Widening a dataframe to get monthly sums of revenue for all unique... 0.00
create vector for loop for condition from from dataframe -2.40
Creating a matrix of vectors with apply (or other iterative functio... -1.74
Is it possible to merge rows in R data.frame? -0.53
Choose column name of the first column which fits certain logical t... -0.59
Generate Cross-table in R with mean and SD +0.21
remove all delimiters at beginning and end of string -3.13
How to get average of lag period in a frequency as a new variable i... +0.58
R update df1 values based ond df2 in different format 0.00
Efficient resampling for the sum of specific values in a dataframe +0.93
Apply a function by row on a dataframe independently of the number... +0.84
Selecting rows where consecutive values change while ignoring NAs 0.00
Sum of values in column V1 based on conditions set in V2 in R +0.90
How to map the segment boundaries to the closest position in refere... 0.00
Vectorize calculation of cell number in a hexagonal grid 0.00
R - Match row to row and row to column to pull element between two... +0.86
Select column name based on data frame content R -0.15
python list comprehension to create repeated value from the list -2.06
Best approach to create time difference variable by id 0.00
if negative then with weighted average -3.08
How to filter rows based on difference in dates between rows in R? +0.22
Search and replace entries in a dataframe in two columns -0.28
How to generate number of prior year an individual had its currect... +0.39
select one row per group with ifelse in data.table +0.07
r data.table usage in function call +0.22
How to compare with values adjacent in a sequence in the same group +0.59
How to subset multiple rows from data.table fast on big data 0.00
How to integrate set of vector in multiple data.frame into one with... -1.83
Rearrange data by matching columns +0.53
Assign different values to a large number of columns 0.00
Check if all values in data frame meet a condition (the condition i... -1.89
Avoiding for loop in R 0.00
How to convert rows that contain same value for one column but diff... -2.58
Performance Issue while operating among two columns of a dataframe 0.00
How to Perform Consecutive Counts of Column by Group Conditionally... +1.06
Combine datasets by date range and categorical variable -0.59
dataframe operations among two columns and adding result as a third... -0.64
Row-wise expansion of data.frame -1.89
Replace (recode) values in a list +0.71
Concatenate strings by group with dplyr +0.19
Test the consistency of the mult-replicate outcomes for each subjec... -0.55