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 ... 4 5 6 7 8 ... 23

Title	Δ
Making rbind loop faster	+1.18
Rolling join in data.table doesn't give desired output	0.00
Split a data.frame column into others columns	+0.67
Replace a part of dataframe with new data	0.00
Make groups for each two sequential unique values	0.00
How to merge all elements of a list with another data table on cond...	-1.27
Remove grouping variable for data.table	0.00
How do I change a named vector to a data frame retaining the names?	0.00
Match substring of two vectors and create a new vector combining them	+1.38
Match substring of two vectors and create a new vector combining them	-0.72
How to tidy this dataset?	0.00
Transform rows of sequential dates into column of date range	0.00
How to set column C value based on a initial column A,B,C value	+1.37
How to add new column from list column value	+0.77
Combine rows with same id and delete duplicated rows	+0.29
Convert number of days since Jan 1 2000 into date format	0.00
Count rows since a date condition is met	+1.21
Count number of occurrence up to each position	+0.76
How to calculate specific percentages	+1.24
Defining flag state based on a given condition and elapsed time	0.00
Multiply a number of columns by a specific column	0.00
Get all combinations of a variable and their corresponding values i...	-1.55
Check & remove variable duplicates within one observation	0.00
Creating Vector with Condition	0.00
How to merge two dataframes on a column that needs to be 3 months a...	0.00
How to look for uniques in other column relatively assign ids	+0.52
Cumulative average for a specific value	+0.29
Use mapply to generate plots using column names as argument	0.00
Use regular expression to extract specific string	0.00
How should I use nested ifelse statements?	-0.10
Subset dataframe after first encounter of a specific string	-0.40
Break up each dataframe row text into five even chunks of text	-0.64
Create legend with manual shapes and colours	0.00
Replace ID variable values with counts of value occurrences	-0.50
Populate a new column if a value is found in any column	-0.18
Data frame to nested list	-1.55
Get element number of list while iterating through it	+1.29
Updating data frame via function to find continuous best value	+0.31
Merging of 2 rows if the date is the same or +- 7 days, and the ID...	0.00
Aggregate rows with a common value retaining unique values	+1.06
List into tibble using list names as values in one column	+0.80
How do I get better date breaks on the x-axis of a scatterlot?	0.00
data.table equivalent of complete/fill from tidyr	0.00
How to tidy a fixed width file with headers every n (varies) rows?	+0.09
Nested sorting of levels by the sum of another column	0.00
Selecting a sublist from a list of lists	0.00
Consolidate duplicate columns and concatenate column names	-2.56
How to check previous row value with present row value in dataframe	+1.06
Count the number of unique dates per ID between 2 dates, conditiona...	+1.12
How to convert web scraped data into numeric?	-0.56