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sindri_baldur

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1543.60 (10,175th) 		Reputation
8,049 (19,576th)
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Title Δ
Calculate average monthly returns in data.table with differing numb... +1.64
How can I access data in a nested R list? -2.07
Subtract a vector from each group in a data.table and match by date... 0.00
How do I loop an operation over a matrix? -0.72
Fill a column with a vector if condition is met +2.16
Removing duplicate values in R -0.85
ifelse makes factor 'forget' its levels order -0.10
Calculate conditional correlation of row sums in loop +0.32
r delete with a condition data.table +1.83
How to format strings using values from other column in R -1.68
How do I do boolean criteria filtering within a column when using g... +0.49
Select one row where startdate & enddate come from first and la... 0.00
Pulling more than one column in R command "pull" 0.00
Assign a variable column name in data.table 0.00
Can you skip a count in a for loop without an if statement -0.96
Selecting single elements in data.table based on logical condition +0.21
Sum amount last 6 month prior to the date of transaction -0.16
Why do I have to use `[[1]]` with data.table everywhere? -0.51
flatten a named list in R - converting the name into first column +1.89
Sum columns with the same name -0.53
Split nested list in the columns in a dataframe +0.11
Passing a vector to data.table with index in R 0.00
Combine data table row elements into a new column as a vector -2.23
test for multiple variables if they are == 1 +0.72
How would you loop this in R? +2.18
R: using the mutate function to combine strings +1.15
Ordered picking value from 2nd column -1.16
amend table by data.table join -0.08
Counting unique values using variables defined by a secondary data... -0.87
string manipulation in matrix in R -0.36
edit by group and condition data.table 0.00
Convert a column of lists into a regular column in a data.frame? -0.01
How to create new variable with source of coalesced value in R -0.05
Convert list of dates to sequences +1.61
Replace Column Values of dataframe based List of Dataframes +1.17
Extract single value from dataframe based on logical condition, Tid... +0.01
Matching values from two column pairs in different data frames in R -1.58
R data.table two stage lookup 0.00
Generate random dates in given years -1.61
Filter using a vector that has the column names +0.60
Populate value by pattern +0.25
How to calculate the mean of the previous 5 values? -1.74
Export xlsx files from table as seperated filtered column 0.00
How to unnest column of type list to wide format without using dcast +0.47
Count several rows and make a new column in R -0.74
Add missing years to data frame (reshaping) -1.89
How to remove rows from a data.frame when a factor takes particular... +0.46
Rename grouping variable in data.table -1.68
R. n Previous Elements in a data frame of another column -0.74
Factor levels by group +0.44