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Rating Stats for

Rich Scriven

Rating
1662.72 (394th)
Reputation
79,691 (1,043rd)
Page: 1 2 3 4 5 ... 40
Title Δ
Consecutive Across and Unique Number Within Group -0.90
Nested loops in R multiple replacement length +0.32
Finding difference between specific rows by group +1.11
Multiply elements of a matrix with vector values +0.26
How can I find the index of objects with length of 1 in a list? +0.25
Sequentially remove vector elements +0.24
Get a function from a string of the form "package::function&qu... 0.00
R-- Add leading zero to string, with no fixed string format -1.97
Converting character to numeric and then back to character 0.00
ordering a vector in R while ignoring yet keeping NAs -0.66
Read data into a vector/scan with some limits [R] +0.27
Remove a column in R when there's too many NA in it +0.25
Producing a random sequence of number... 30 times -0.21
Filling missing levels +1.00
Subsetting a list to remove character(0) elements -0.76
Replacing values in an R dataframe with part of existing value name -0.85
How to avoid NA answers when using as.Date? -0.16
How to Access the List Indices -2.83
How to generate random numbers in many ranges +0.71
Create new column to identify the first value >0 across differen... +0.32
How to get calendar date from only year and julian day (yday) in R -0.21
Challenge: Recode data from Alpha to Non sequential Numeric -2.03
Replace everything inside a cell except the string I'm looking... -2.95
How do I remove all the Chinese characters from a string? -0.24
Read the first line of every R script in my project +0.96
counting number of mutated rows dplyr 0.00
Naming when splitting a data frame into new data frames 0.00
How to find how many rows beginning with a certain letter? +0.25
Creating objects based on a specific restriction 0.00
Attempt to apply non-function in a sequence 0.00
select multiple rows from a dataframe with a value equal to highest... +0.26
Truncate character strings after first N characters +0.91
condititonal concatenation of vector depending upon NA position in... +1.16
Can't add value to an empty data table +0.23
convert named vector to list but keep vector names +0.99
How to remove NA from data frames of a list? 0.00
How to group and fill rows +0.70
Slow data.table subsetting vs dplyr 0.00
Aggregate excluding inf 0.00
R:Using a character as argument in a function 0.00
how to add add list element names as a variable in the output -1.19
Paste a list to a vector, repeating the list for each vector level +0.97
Sequentially index between a boolean vector in R +0.38
match elements in two vectors within a range +0.03
How to pass an anonymous function to dplyr summarise +0.91
concatenate values across columns in data.table, row by row 0.00
Creating a new column based on two old columns in a data frame +0.30
delete parts of a character vector -1.61
how to divide all columns to specific column in a new data 0.00
WHY as.POSIXct(Date&time) in R will lose my time? -1.12