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1575.13 (3,482nd) 		Reputation
32,295 (3,688th)
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Title Δ
Update column of dataframe1 based on column of dataframe2 + create... -0.66
Separate rows by matching two columns in similar pattern +0.62
How to match two data frames based on substrings within groups -2.14
How to apply a function to every consecutive n elements in a vector -1.56
do.call skip error and continue processing +1.58
How to reshape dataframe and take the count -2.35
Can I sort a column (Character) by last part of a string / value? +0.72
How to remove duplicate elements from two lists (pairwise)? -2.68
A time series with 2 kinds of periods 0.00
Randomly take equal number of elements from two groups -- create tw... -1.06
Create new column to long data format if group have more than one f... +1.62
How to find the three closest (nearest) values within a vector? -1.35
How to reduce aligned sequences to start and end coordinates? -1.48
Separate data frame depending on one column duplicates +0.28
List to dataframe conversion in R: Keeping List indexes +1.08
Merge contents from three dataframes into one column in R (across m... +0.62
How to find the average values of specific columns based on position -0.73
Exclude columns from apply function based on column name -2.29
"How to consolidate Values present in Unique Rownames" an... 0.00
How to filter rows that satisfy condition based on consecutive sequ... +1.39
Compare two columns values and extract added characters to new diff... 0.00
Extract values from data table -1.60
Conditionally replace values based on content of subsequent row +1.63
Merge two correlation tables into a symmetrical named matrix 0.00
Group levels of an existing factor 0.00
Match select the max value from another data frame -0.38
Create incremental value with restart with condition within ID +1.62
Convert pairwise distance table to list of distance for individuals... +0.54
Repeat dataframe rows based on cumsum index -0.39
How to loop through multiple values in the same string? +0.57
Subset specific rows per group +0.48
Removing a row based on its content +1.98
group rows in table +1.62
Match pattern so long as it doesn't contain a specific string -0.82
How to check if some values are true +0.47
joining data.frames from within two lists based on regular expression +1.27
How can I create a column indicating whether row is first occurence... 0.00
Add new column to dataframe with duplicated values pasted together +0.28
sum for each ID depending on another variable +1.66
Convert a string separate by . and + -0.25
Check which rows with each word in a string are capitalised and spa... -0.54
Compare the words from a data frame and calculate a matrix with the... -1.33
Compare two rows of a data.table and show only columns with differe... -1.30
Stepwise sampling in a tibble -2.15
melting matrices with logical values +2.10
Keeping only duplicate values by rows 0.00
Merge list of list on sublist level +1.59
From a cumulative series, how to get the original series? +1.61
How to complete columns in a data frame from left to right +0.36
Reshape matrix by rows +0.19