StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Rating Stats for

Jaap

Rating
1662.99 (393rd) 		Reputation
58,717 (1,592nd)
Page: 1 ... 6 7 8 9 10 ... 23
Title Δ
Adding data frame below another data frame 0.00
Counting number of hours between two dates with data.table 0.00
From sessions to minute by minute summary 0.00
Extract rolling maximum value based on column value -1.28
How to split a character vector based on a numeric vector for posit... -0.10
Keeping maximum values on diagonals in matrix 0.00
How to reshape a text file? +1.22
(Update) Add index column to data.frame based on two columns -2.81
How to calculate mean value of two list for each row +0.76
How to count strings separated by a semicolon +0.32
Extract data from text files using for loop -0.21
Fill all entries between two specified values +1.52
Error while pivoting Data Frame +1.23
Add a counter meeting specific conditions -0.73
replacing even rows with columns +0.31
Remove rows which dates are within 3 days of another data frame 0.00
Returning row number using sapply -0.61
Most efficient way to check difference between 2 dataframes with nu... -0.20
how to classify data to different levels +0.90
na.trim on specific column with data.table +1.83
Create index for this condition using data.table +0.32
dplyr filter with condition on multiple columns -0.63
Count comma separated unique values in a string +0.37
How to merge two rows in R 0.00
How to flag first change in a variable value between years, per gro... -1.30
Calculate p-values in a for loop +0.99
Why does geoshere give the wrong distance? 0.00
How to find monotonous sequence in dataframe -2.80
How to lookup by row and column > column names? +0.25
Subset by multiple ranges +1.66
Calculate per category and define class name accordingly -0.58
Counting number of elements in a dataframe column -2.15
Replicate each row and change one column into binary values -0.02
Replace value in data frame with value from other data frame based... +1.46
rolling joins on multiple matches 0.00
data.table mapping 0.00
Delete rows between values of a column 0.00
Required order of columns names which does not have NULL values -0.44
Count active items per month 0.00
Merge two dataframes by time and variable ID with NAs +1.84
How to remove NA pattern from string -1.54
How to add a column to a data.frames when the data.frames are store... -1.68
Conditional insertion of row using data.table or dplyr 0.00
Calculate sum sequence by sequence +0.53
mining sequences from data frame rows +1.49
Replacing 0 values with NA in data.frame conditionally +0.33
Select nth observation and sum by group using data.table +1.13
Read lines that do not begin with ]dos 0.00
Using Group_by create aggregated counts conditional on value 0.00
How to fill my data.table without using two for-loops? +0.32