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Rating Stats for

G. Grothendieck

Rating
1622.82 (1,021st)
Reputation
165,339 (319th)
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Title Δ
How to remove a certain time period in zoo format -0.97
Turning a vector of values into a comma separated vector with quote... +0.34
Apply common function to all data frames and return data frames wit... +0.35
Adding new column with diff() function when there is one less row i... +0.35
Vectorize nested for loops in R (for multi class logistic loss calc... +1.15
how to integrate the information of two matrices using one matrix p... 0.00
How can I pad a vector with NA from the front? -0.68
putting variables into vectors to be used in subsequent function (R) +0.38
Align different datetime from different data frames 0.00
Function within a function (R programming) 0.00
How to find trailing and leading words of a word using R? +0.35
Naming elements of a nested list from their index in R +1.31
Trying to optimize this code. Speed problems 0.00
R - Calculate sum within date range using zoo 0.00
Is there any code using apply to optimize this? -2.54
How to generate unique combinations of cases to maximize a value wh... 0.00
R - Using nested dataframe to run function with different sets of p... -2.53
How to split a "formula" in R +0.35
Apply a function references by string name in magrittr -0.16
Update a column in df2 by matching patterns in columns in df1 &... -2.24
replace <NA> in a factor column in R +1.30
Parameterized SQL query in R with IN clause -0.62
Import unusually formatted text data using R -2.33
How to replace NA with most recent non-NA by group? -1.14
Running multiple regressions in R for different IDs with panel data -0.77
Understanding Enclosing Environment +1.54
Add column to dataframe depending on specific row values (2) +0.35
How to efficiently split 1 data frame column to create a new data f... +1.27
How to compute the sum of a vector in r using a for loop +0.29
Perform a cumulative group operations with R and dplyr -1.48
Explanation needed for v <- 2*x + y + 1 -0.72
Put placeholder rows in correct positions in a data.frame, filling... 0.00
Importing CSV files with CRLF broken lines in R -0.66
R - extract all strings matching pattern and create relational table +1.61
average previous time series in R +0.54
Organizing Multidimensional Data in R +0.38
Function to check if R function relies on C/C++ compiled code? 0.00
Regular time between rows with R 0.00
Error with leftstr and column name with period using sqldf in R 0.00
R- Use a string as an expression 0.00
Create a column by filtering and dividing another column with a spe... 0.00
How to extract Month name from Timestamp in R? -2.58
how do you subset data frame beteen times in R +0.32
Text Matrix multiplication -1.41
Convert Year/Quarter Data Frame to Time Series 0.00
Cumulative Sum with Multiple Criteria 0.00
replace only date in PosixCt class +1.62
Subset a dataframe according to matches between dataframe column an... +0.83
alternative to long list of nested ifelse statement with multiple c... +0.34
How to delete values in a column of the data which appear less than... -1.58