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 ... 10 11 12 13 14 ... 28
Title Δ
r data table dcast order of new columns 0.00
Applying dcast in a weird way -1.15
How to create multiple new columns with data.table's j over dif... -2.08
data.table expand sub list use names by reference 0.00
Updating data.table by inserting new rows that are different from o... +0.32
Grouped operation on all groups relative to "baseline" gr... +1.59
base:split() implementation - faster options within R/data.table 0.00
How do I access a member of a list within a data.frame based on a c... +0.28
How to use dplyr mutate to perform operation on a column when a lag... 0.00
Extract one column as rows with R, preserving other columns +0.54
Error splitting rows based on column regex 0.00
Conversion from R data.table to nested list 0.00
Efficient way to find manager's manager's id 0.00
Extract only quarter from a date in r +1.17
Translating Stata to R - recoding 0.00
Check overlap begin and end time by group in R (Run incorrectly whe... +0.31
How to write reusable functions for columns in by group operations... 0.00
Function similar to group_by when groups are not mutually exlcusive +1.75
Check overlap begin and end time by group in R 0.00
Returning a vector of counts for a specific value appearing in each... +1.26
Consolidate rows based on date ranges 0.00
Cumulative sum base on the value of different columns in the same r... +1.22
R - sequence calculations both forward and backward looking +0.34
extract "N" sized sequences from an array in R 0.00
Take column-wise differences across a data.table +1.14
Can you explain this by-group data.table result 0.00
Concatenating and pasting two columns using line breaks within data... 0.00
Sum consecutive day values +0.35
Calculating support of an amount based on a threshold in R data.table +0.74
count the length of Number Sequences +0.29
Inserting a column after a specific column +0.35
Combine several dcast data.table (which share same key) efficiently -0.71
R - sample and resample a person-period file +1.60
Better R way of doing/replacing the following for loop +0.19
How do I match this pattern in R 0.00
Counting back to events in R +0.36
set operation within a list column +1.84
Aggregate duplicates in multiple columns of a data table in such a... +0.39
How to group in data.table with overlapping value? +1.33
R fill values depending on combination +1.68
Transform ids -> items to {pairs of ids} -> items 0.00
How to find row indices where duplicated pairs exist -2.45
Joining 2 datasets and creating new rows where matches are found +0.67
Summarizing unknown number of column in R using dplyr +0.33
dictionary expansion in R +2.27
R data.table NA type consistency 0.00
Group a data.table using a column which is list -1.64
data.table: subset by observations in last 24 hours, per group -0.02
How to write a function which can count individuals once even with... 0.00
Ranking and Counting Matrix Elements in R +0.86