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sindri_baldur

Rating
1543.60 (10,175th) 		Reputation
8,049 (19,576th)
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Title Δ
count duplicated rows, by unique row 0.00
How to select and replace multiple values of a character variable b... +2.07
finding string variable in each row and generating new variable in R +2.36
Is it possible to use select(mtcars, wt:) to select all variables f... +0.00
data.table subset condition on .SD columns? +0.19
Turning a character vector into an empty list with names from the c... +1.60
Insert a string by condition in R +0.62
"Loop function to find the number of null value in each column... +0.03
Select rows in dataframe conditional on a switching boolean variabl... -1.88
how fill column by last value +2.42
Can I extract strings that contain any of a vector of strings in R +0.31
How to create new columns by extracting numbers from a vector colum... -1.73
Programmatically create a grouping column for data between a set of... -0.41
Replacing NAs with non-NA values by ID 0.00
Searching a named vector in r -1.22
carry over other variables in summary 0.00
Creating new column in one dataframe based on column from another d... 0.00
shorten case_when syntax when applying between command over multipl... +0.60
How to generate data frame from pairwise combinations of levels +0.41
Grep when pattern is found exactly n times -0.13
Indexing by two columns consistently +2.63
How to use transpose function (t) to transpose rows by hours of day... -1.59
Dataframe column: Remove quotes, change decimals and turn into nume... +2.31
A data.table solution to remove variables with more than a certain... -1.80
replace zero value of one dataset by last values of second dataset... -0.21
grepl in R: Replace character/numeric levels +0.55
How can I filter a dataframe with undetermined number of columns us... -1.62
changing (semi)long format to wide in R -1.71
Format a number 1000 as 1k, 1000000 as 1m etc. in R 0.00
R: How do I combine many txt files into one table with each txt fil... 0.00
data.table calculation for last row per group +1.16
How to format to keep 4 digits before decimal point -1.42
list of data.table: filter by variable +2.36
Subsetting rows inside function in data.table -0.62
How to retain only first occurrence of duplicates in a row? +1.35
How to search a data frame for multiple strings and pull different... +0.47
Subsetting of rows in R data frame -1.00
Encoding in data.table in R 0.00
Age calculation for observation data in R +2.25
How to omit rows with a value contained in a separate vector +1.20
Select one data point per row using indexing vector with negative v... +0.46
Is it possible to make data.table code faster? 0.00
Remove rows from data.table where all columns with names including... -1.46
R data.table conditional calculation +2.63
Join two data frames together and use most recent result as rows ad... +0.57
Split string at separator using stringr::str_replace -1.91
How do I convert numeric value into hours and minutes depending upo... -1.07
R: comparing a column with values in another column present as list... +0.74
Convert a data.table to list of rows that are data.tables and apply... 0.00
rbindlist only elements that meet a condition -0.49