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Rating
1575.13 (3,482nd) 		Reputation
32,295 (3,688th)
Page: 1 ... 9 10 11 12 13 ... 34
Title Δ
10 digit numbers starting with 4 or 6 -0.45
extract n characters/numbers after exact pattern -0.94
Sum of only consecutive number 0.00
Spread combined comma and colon separated variable into seperate lo... -2.27
Replace NA with other row value based on id -1.77
How to subset dataframe based on a "not equal to" criteri... +0.80
How to remove all rows that don't meet all conditions (per grou... -0.86
How to remove first few words and take count +0.31
sum up values of compressed time series over time +1.56
Convert nested data.frame to a hierarchical list +2.32
Merge dataframes of list and obtain names of dataframes as column +0.36
expanding (exploding?) a data.frame by adding a variable containing... -1.25
Summing up periods -0.83
Sorting one variable in a data frame by id -0.98
Using mapply to set values based on values in other columns 0.00
How to remove certain items from a vector? +1.25
Expand dataframe shows `x` is not a regular sequence error 0.00
Duplicate elements in a list to have the same length as number of e... -1.14
Split string in R and reassambling column by column +1.03
Manipulate string in column of a dataframe +0.54
Summarize data in base R +2.22
POSIXct not accepting custom origin 0.00
Corresponding last value in every minute -0.97
Using filter and sample in a grouped dataframe 0.00
Fetch columns by matching them to another data's row value -0.89
Error in mutate_impl(.data, dots) : Column `..........` must be len... -0.15
Dataframe column to matrix by two other columns 0.00
assign specific characters to rows in a data frame +0.47
Find that values that are immediately below a given set of values a... 0.00
Creating time window around a date +0.92
Sum of element in a list with python -0.15
Count paired columns and aggregating 0.00
how can I find the number of instances a value occur in different c... -0.61
split row values into columns -0.99
Modify a string in a list - at a particular index -0.66
Replace NA values with 999 in R subsetted by ID +1.50
Sum a variable based on another variable 0.00
Add names of dataframes in a table -0.24
dplyr group_by over elements of two columns +1.75
Filter duplicate sequence of rows +1.08
Getting unique count from a structured text data -0.61
Getting the unique count of strings from a text string -0.67
Remove isolated elements of a vector +0.36
Split a list of vectors based on named attribute in vector -2.33
force .GRP counter to start from 2 instead of 1 in data.table +0.19
rename columns of dataframe -1.65
summarize from string matches -0.55
Replace words from one vector of strings with blanks if they match... -2.76
Change table to character vector without spaces -0.23
Grab two variables from structured character vector and create data... -1.88