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Rating Stats for

G. Grothendieck

Rating
1622.82 (1,021st)
Reputation
165,339 (319th)
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Title Δ
Using lpSolve to optimize choices 0.00
Messed up panels after plot.zoo (multiple) and par(new=T) 0.00
Counting the elements in rows and map to column in r -1.47
How to transpose a long data frame every n rows -2.62
R gsub numbers and space from variables -1.54
Convert irregular spaced data to timeseries 0.00
Creating a table Summary using R -2.63
How to use "sqldf" in a function 0.00
making a triangular (or generally a square) matrix symmetirc -1.52
Count Instances of Substrings in R 0.00
How to convert a string to a formula with the type of `language` in... 0.00
R - find rows with at least n distinct elements +0.35
Extracting element from a string -1.31
Moving average from first to final value in a column +0.35
Find the 2 lowest number Index in a vector in R 0.00
Filling rows with previous row's value for subsequent NA values... +0.34
How can I convert a list of character vectors to a single vector? -0.32
How to find similar density curves? +0.30
Generate 4-digit years format from as.date() +0.08
R extract elements from string based on position of spaces -0.98
Creating months and years vectors based on two dates -1.58
Define an anonymous function without using the `function` keyword +0.48
set constrains in a liner model using R 0.00
Specifying x values when converting approx() to data frame 0.00
dplyr conditional summation -2.67
Broken stick (or piecewise) regression with 2 breakpoints 0.00
Creating a ts time series with missing values from a data frame +0.80
Passing in strings to functions using rlang::sym and exclamation ma... +1.35
python vs. R scope -1.72
How can I write a recursive compose function in R? +0.56
How to flatten to dataframe a list with NULL? -0.16
How do I install an R package under another name? 0.00
Concatenating strings with multiple separators using paste() in R -1.18
How to find the first space in a sentence with Regular Expressions... -1.10
Call apply-like function on two rows to match +0.32
Linear Optimization R 0.00
R- my first row has # character in the column names? +2.09
Conditional rbind +0.33
Checking for identical values across multiple columns in a dataframe 0.00
keeping a row that meets one criterion and the row above it if it m... +0.31
Count # of IDs that meet both criteria -2.58
mutate in dplyr price * qty using company accounts from row strings 0.00
How do I neatly present the output of different combinations of two... +0.30
R: Frequency of all column combinations -1.31
Format year half contained in text as dates +1.11
Count number of days between given two dates grouped by month in a... -0.66
How to plot based on a wildcard -2.49
R - time series reduction with plot for multiple columns +0.30
Expand an R data frame structure that contains a CSV value 0.00
How to find first element of a group that fulfill a condition -2.42