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1575.13 (3,482nd) 		Reputation
32,295 (3,688th)
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Title Δ
Conditionally removing duplicates based on several conditions in R +0.72
Vectorizing which operation across the rows of a matrix +1.49
extract multiple patterns from string -0.53
Find global index for first and last NA value by group +1.50
How to elegantly split array of strings in list elements by substri... +0.39
How Do I Find Consecutive Values -1.31
NA if the value is enclosed between NA 0.00
Numbering rows based on vectors 0.00
Extract different set of rows from data frames in list +1.08
How to calculate the number of specific observation each row and ad... 0.00
Merge more than two data frames at once +1.71
Extract AICs from an ARIMA using a nested loop 0.00
how to merge a list with a datatable while keeping the list format... +1.48
Flagging how many data are present in a triennial average 0.00
How to remove duplicate values from different rows per unique ident... -0.13
perform the same operation on many columns in data table, data frame +0.36
Filter observations starting with a number in an interval? +0.83
column-wise filtering of dataframe +2.06
simples solution to subset max data with multiple condition passed -1.01
Collapse all cells in each column to one cell and ignore NA +0.88
Return multiple values based on duplicate max values in another col... 0.00
How to add two columns from two different dataframes in R based on... 0.00
Converting data from wide to long format when id variables are enco... -1.31
Calculating ALL nested level aggregations of specific Column ( SUM,... -1.84
How to sample 90/10 split% rows out of 2 columns -0.68
Assign group id to sequence of concecutive unique values in timeser... +0.87
divide columns using pattern in colnames +0.77
Based on a condition in a column in data frame, remove data in othe... -0.01
Replace cell values, match list elements and switch the pair +1.84
How do I make a binary matrix comparing several columns +2.04
Replacing NAs with zeros only in non-empty groups +1.04
R package psych two means in one variable after combining -0.11
Extract colnames from a nested list of data.frames -0.19
Between group difference in mean values for all numeric variables +0.65
Aggregate rows close in time +0.43
Sort list of dates and sort other list based on this sorting order... +1.22
replace columns with "0" and "1" +0.82
Counting sequential rows with the same / missing value +1.26
Merging the content of several columns into one +0.60
How to mark/delete specific duplicates based on other variable(s) +1.29
Gather a wide data frame into narrow but expand to create interim r... +0.36
Dplyr / tidyverse How to order columns first by number of available... -1.77
How to match row to column when 'Yes' is entered in multipl... -0.31
Spearman correlation and splitting 1 variable +0.79
Split rownames from data frame +0.36
How to create multiway tables based on factors? +0.69
Group by similar results and check if TRUE/FALSE among the other va... 0.00
Add actual date to a csv output file name +1.07
How to create a ragged dataframe (ragged array style) out of a data... -0.05
How do I write a function that changes the structure and replaces v... -0.08