StackRating

An Elo-based rating system for Stack Overflow

Home | About | Stats and Analysis | Get a Badge

Rating Stats for

Frank

Rating
1617.40 (1,172nd)

Reputation
57,070 (1,677th)

Page: 1 ... 12 13 14 15 16 ... 28

Title	Δ
Create matrix based upon group membership	0.00
Reshaping data.table with cumulative sum	-0.80
Aggregate an array based on the dimension names	+1.60
Replace cell values in data frame based on column name and variable...	-0.55
R: How to ignore certain value on pmin	0.00
How to assign a value to a data.frame filtered by dplyr?	-0.26
Calculating time spent in a given level when that level changes	0.00
Subset observations that differ by at least 30 minutes time	+2.19
dplyr: Generate row number/row position in group_by	+0.36
If a cell contains a certain character replace the whole cell in r	+1.54
Exclude a few columns from a grouped selection by `dplyr::contains`	0.00
Pass data.table column by name in function	+0.38
Rename one specific row of a matrix (R)	+0.37
Creating summary table using two separate datasets in data.table R	+0.37
R : nesting by `ifelse()`	0.00
Fetching a score associated with a date 'Around' 7 days ago	-0.60
Gather multiple columns with tidyr	0.00
Elements of one list as arguments to a function acting on another l...	-1.23
R: Extract last N words from character column in data.table	+1.71
Divide column of data by mean of the group R	0.00
r - copy missing values from other variables	+0.55
all.different function in R, apply it in a loop?	+0.79
Matching multiple IDs in R	0.00
Allocate along members of a group in data.table	0.00
Using data.table to make summary table	0.00
repeated joins on huge datasets	+1.24
compute the correlation by 3 days ahead and not by matching day	+0.38
Looping through rows using lapply with a conditional	+0.41
Efficient way to find repeated runs of rows, remove, & count	+1.52
Efficient way to find repeated runs of rows, remove, & count	+0.92
Using two grouping designations to create one 'combined' gr...	+0.03
Equi-join and rolling join in data.table	0.00
Cumulative Portfolio performance by Name	0.00
String splitting in R data.table column produces NAs	+2.05
Take a daily rolling mean of a seven day window for 30 minute sampl...	-1.56
Cumulative sum of an unique only variable with attached condition	0.00
Restructure / reshape data frame ( r )	+1.03
Writing efficient functions for data.tables that replace by reference	-0.65
dplyr summarise logical condition	+0.97
R - How would I check to see if columns corresponding to a given gr...	+1.59
dplyr rowwise by some columns	+1.99
Count matching elements by row between two data tables in R	+1.51
R data.table default outer join with setkey, counting rows	0.00
R, data.table: How to assign values of some columns based on the na...	+0.39
replace every other space with new line	0.00
How to perform an operation on two groups in the same data.table, w...	+0.33
recode (car package) function - recodes argument and equals sign	+0.21
R: Efficient Way to Merge+Update Table With Second Table Where Valu...	+1.98
R - Changing values based on reference	0.00
Summing consecutive matrices in nested list r	+2.07