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 2 3 4 ... 23

Title	Δ
Longest consecutive count of the same value per group	+1.53
Split elements in vector to different column with fread	+0.89
R - Merge two datasets if ALL values per group match	-2.51
Subsetting data.table by values with repetition	0.00
Change column name based on row values	0.00
Match household partners without loop	+0.46
How to find the quantiles of each variable of a data.frame	-2.58
Create a sequence between two letters	+0.23
Conditional filtering using grepl and relative row position in group	+0.71
Calling a row on a data.table with multiple column key	-3.10
Multiply cell in dataframe based on character	+0.70
Filter rows dataframe based on condition in different dataframe usi...	-1.24
Simultaneous fuzzy and non-fuzzy join	0.00
Count of values within specified range of value in each row using d...	+0.27
Split vectors by uppercases and lower cases	-2.05
Count number of rows before first non-zero	+0.79
R per ID column remove rows by list of values	0.00
Replace words in an unstructured text file using a for loop	-2.61
Find nearest preceding and following dates between data frames	-0.68
Check if a date is in range of lookup table	+0.32
What does < stand for in data.table joins with on=	+1.12
Group_by and mutate slow on large dataframe	-1.58
Select subsequences from a dataframe	-0.99
Dummy variable conditioned on repetitions in grouped observations	+0.74
Count if between date range based on groups	+0.28
Inserting new rows using dplyr / data.table	-1.70
How to do a join and only select a specific row from a related Group?	-0.61
Calculate time to event from event indicator variable	-1.65
Change values of multiple columns based on the value of one column...	+0.27
Reshaping in data.table	0.00
Remove 2 consecutive lines meeting a condition	+0.90
Need first instance only when joining two tables using data.table&#...	+1.04
Create a new column based on a condition on multiple columns	-0.59
Mapping address to nearest metropolitan area	0.00
Find nearest value by group	0.00
Split string into single letters and remember position	-0.09
Applying custom function to each row uses only first value of argum...	+1.31
decode all values to zero if Sequence <= 3 keeping certain infor...	+1.07
How to calculate return in data.table?	+0.28
Select rows by ID with most matches	-1.23
data.table::melt - variable column converted to factor with variabl...	0.00
Aggregate only at specific rows with data.table	+0.30
Manipulating character arrays quickly in R data.table	+0.29
Update multiple columns by reference in data.table with a single ve...	0.00
Add missing rows per missing Year by Group AND add more rows till p...	0.00
Multiply across dataframes by column values	+1.07
Join datatables using column names stored in variables	+1.12
Dealing with missing values when calculating weighted mean	-1.04
Selecting correct join with data.table	0.00
How to automatically enter input in readline() instead of manually...	+0.27