StackRating

An Elo-based rating system for Stack Overflow

Home | About | Stats and Analysis | Get a Badge

Rating Stats for

sindri_baldur

Rating
1543.60 (10,175th)

Reputation
8,049 (19,576th)

Page: 1 ... 9 10 11 12 13 ... 21

Title	Δ
How to extract a number from a string in a dataframe in R and place...	+0.87
Equivalent of select i.*	0.00
Adding na.rm as a parameter to a custom function in r	0.00
Remove rows which have all NA's, apart from the first column	+2.32
how to match quote and trade data with data.table (rolling join)	-0.13
why description of the head disapear after removing some columns?	0.00
data.table way of complete+fill from tidyr with groups of differenc...	+2.15
How to edit multple patterns using gsub	-0.33
filter a n*n matrix with row number greater than column number effi...	-0.86
data.table assign value to unique observation	-1.21
R - rbind logically	-1.73
Replace values in one column based on condition using its name as a...	-1.73
Delete ticks between breaks in ggplot	-1.86
Splitting list of n element into one dataframe of n vectors	-1.55
Count minimum values in a vector, where the minumum values are in c...	+1.46
Create a combination of unique column names from two dataset withou...	+0.05
find the minimum value that is not zero per each group using aggreg...	+0.05
Substracting means of the elements from list	+1.57
Test multiple columns of strings for match row-wise in R	-1.64
Problem with expand.grid with uneven vector lengths	-1.16
reshape dataframe from one single column to multiple columns	-1.58
return ratio of rows when aggregating data	+2.32
Bind data.table with diff rows such that the shorter dataset repeat...	-0.87
Setting the names in `...` for an R function	0.00
How to find number of times items and their combinations were purch...	-1.53
Join data frames and select random row when there are multiple matc...	-0.38
Data.table to shift one column down and fill with NA	-0.07
How do I flag the last observation in a group while maintaining a s...	+0.07
Deleting all rows until certain value - than do the same for the ne...	+0.03
How do I speed up this double loop by vectorization in R?	+1.38
Avoiding nested ifelse without using "dplyr" library	-0.45
How to get the output of cat as a string instead of printing it?	+2.29
R data.table set specific columns to their last values, by group	-1.74
Aggregate vector into dataframe	0.00
Obtaining a single value from a table in R	+0.53
How to extract only the capture group in a regex in R	-0.75
Insert rows with zeros in data frames with nested groups	+2.31
Get top_n rows by group on multiple columns	+0.53
Summarizing and spreading data	-0.48
Split string to data frame in R	0.00
Numbering row in order by ID	+0.58
How to extract similar element from a vector?	0.00
replace values in data-table based on column number and separate in...	+0.13
How to calculate the row mean of a variable for the date before tha...	-0.48
unexpected behaviour in data.table using regex	+0.52
Removing all duplicates in data.table, adding column with list of i...	-1.59
From a boolean table keep lists with existing values	+0.94
Remove all duplicate rows, unless there's a "similar&quo...	-0.26
Add rep vector to dataframe with uneven total rows	0.00
TABLE of age groups	0.00