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Rating Stats for

G. Grothendieck

Rating
1622.82 (1,021st)
Reputation
165,339 (319th)
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Title Δ
Return how much trimws has trimmed from a dataframe +1.16
Using the right-hand side of "Yacas vector" after Solve a... +1.17
Trying to apply a specific function to my data 0.00
read csv file with multipe matrix 0.00
Cumulative multidimensional array sum in R -0.85
Quickly accessing matrix element, where indices are given by other... 0.00
Cumsum w/ panel data: different start dates +0.30
Is there a function to scrape the notes sections of Powerpoint Slid... 0.00
How to extract last, unique and consecutive values from a data frame +1.34
How to generate a sequence of monthly dates from a data frame in R? -1.43
Computing Nullspace from USV 0.00
How to match a timestamp to a time period in R 0.00
I want to split a column into 5 different columns based off its let... -0.48
Make new variable based on final cumulative sum of another column -0.92
How to Split Strings based on conditions in R? +1.29
R data.table fread cannot read in irregular column lengths when the... 0.00
How to use R to backsolve which numbers are being summed to a total... 0.00
Apply a formula to the data in R +0.90
How to make a left join, in which the the row taken from "data... -2.69
string a split and paste prefix to the new split string -2.42
R sqldf not recognizing source csv file made with "write_csv&q... 0.00
How to use read.csv2.sql to read zip file without unzipping it? 0.00
Choose variables for correlation matrix +0.30
How to round to the next hundred in R +1.07
Creating a new row that is the difference of one row from a scalar... -1.40
Matrix multiplication (row by row) 0.00
How do I simplify the code below when using grepl to replace every... -0.72
How do I prevent interpolation between values where there are more... +1.43
How to sum over rows above restarting at each ID in R +1.00
How do I lookup a value in another zoo object? +1.01
Importing csv with unquoted strings with commas; for every line- ig... -0.20
First occurence in table based on values of another table in R +0.34
get count and sum in same column in R 0.00
Extracting string between punctuation, when present +0.60
Matching the row value of a data frame with its corresponding values +0.30
How do i Count number of Values in a column and write it in a new c... +1.41
Order of dates when plotting time series in R -0.22
How to count the number of monthly occurrences in a column and modi... 0.00
Recoding time series data to create time 0 for each individual +1.76
set dataframe name inside a function using lapply +0.22
How to check if date is within specified time of the year -0.57
How do I sum matching elements in a list of zoo objects? +1.97
Succinct way to summarize different columns with different functions +0.72
Can I not view 'ts' objects in R 0.00
How to dataframe that holds a list inside of a column into multiple... +0.72
How do I join two tables based on which DateTimes from A are within... -0.21
How do I iteratively call sqldf on a vector of strings? (naming lis... +1.46
How to get the last element of the strings in a column in R? 0.00
Converting data collected at irregular times into a time series in R 0.00
Convert integer to date in R and sort by date using sqldf +0.32