StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Rating Stats for

akrun

Rating
1527.10 (21,478th)
Reputation
833,306 (14th)
Page: 1 ... 339 340 341 342 343 ... 562
Title Δ
Match and count rows containing numeric characters +1.14
How to select the first n rows of each group in specified columns (... +0.11
Conditionally change values in a data frame to their column name -0.98
How do I use ColSums 0.00
rand() function in R not working 0.00
Count consecutive number of 1s in each column of a data frame 0.00
Create a dummy variable from condition in a string 0.00
In R, how can I vectorize a column assignment that filters for anot... 0.00
r: delete rows where any column contains number -1.80
Inserting rows into groups while joining -0.65
Extracting items from list in R -0.43
Increment a value by previous element in R 0.00
Group data according to frequency of values in a column in a data f... +0.56
Expanding data.table by operating on a column -0.44
How to make the first occurrence of a number into NaN within a group -0.66
Statistics of multiple similarly named columns -1.39
Choose rows which have same value to make similar-network in r 0.00
How to match a substring at the end of a string in R? -0.66
Appending to a column with conditions -0.40
Assign unique ID to equivalent rows in data frame -0.26
select rows from first instance of a value by group +0.46
Concatenating two vectors in R 0.00
Pivoting data in R with duplicate rows -1.01
Generate part-random strings from regex 0.00
Row operations on selected columns based on substring in data.table +0.55
How to sort the columns with values greater than equal to 0.2 on a... 0.00
filtering large data table by two variables in R 0.00
Replacing square brackets with curly brackets in R -1.63
regex to find between nth to nth occurrence +0.53
Issue in formatting DATETIME when Importing massive excels in R 0.00
How to substitute a subset of string from a string? 0.00
How to create a new column based on the values in other columns in... +0.46
How to exclude certain rows from scale() normalizing calculations i... 0.00
How to check each row for invalid values/codes in a data.frame 0.00
dplyr calculate new columns in batch 0.00
Extract rows from a single column to form two new columns +0.54
Remove row if any column contains a specific string +1.57
Merge columns based on value at index in a separate vector +0.53
Error undefined function in R ":=" 0.00
how to get value in for loop from itererator object in R? 0.00
Save excel file with dataframe name if in a function 0.00
How to create bin for each column automatically +0.06
match data across rows for paired ratings -1.64
Exclude columns by names in mutate_at in dplyr -1.57
How to categorize rows based on string in data.table column 0.00
last element in group omitting NA - dplyr -0.37
What is the best way to clean a data.frame in which row values are... -0.89
DataFrame - Unique values +0.59
Splitting numeric column data by given number of characters -0.27
Value replacement of dataframe - R -1.46