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Rating Stats for

G. Grothendieck

Rating
1622.82 (1,021st)
Reputation
165,339 (319th)
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Title Δ
nls function does not perform well -2.69
Creating a loop that calculates the rolling mean of a vector for di... -2.15
how to cumulatively add values in one vector in R -1.13
rollapply with a function taking a matrix returns "incorrect n... -1.40
How to edit multiple file names at once? +1.04
Calculate inverse of a non-square matrix in R -0.14
var, sd, cor functions that have n as denominator 0.00
How to replace 'NA' based on values that come before and after +0.62
rollapply with function rle(x) +0.33
Extracting number from the beginning of a string with regexp -1.44
R - Bounded Cumulative Sum? -0.41
regular expression -- greedy matching? +0.20
How to indicate the first event observation and remove the rest of... +0.34
Updating a zeroinfl model in R 0.00
Solve simple equation in R -0.66
Modify S3 object without returning it? -0.80
How to build data matrix from mixed and messy CSV file? -0.65
readSeries, read and convert time-series data set? 0.00
Creating time intervals using sqldf package +1.14
Assignment Algorthms in R - lp.assign() +0.34
R fitting an S-shaped or cumulative function to estimate values out... +0.88
Create a simple time series 0.00
store matrix data in SQLite for fast retrieval in R 0.00
Column split by fixed length in R 0.00
Transform a date to factor in R keeping order in factor levels cons... +2.02
R - rollapply with reverse window 0.00
R: nice looking col names in writing text files 0.00
read.zoo adds month and day when I specify format as "%Y" 0.00
Bin formation in a R data.frame -0.38
Isolate part of a string in R -0.13
Parse Excel Formulae 0.00
R: Joining two time series 0.00
algorithm/code in R to find pattern from any position in a string +0.48
Create a panel data frame +1.29
converting numbers to time -0.53
Splitting a string without delimiters in R -0.10
Rolling sum of time series with factor -2.12
R apply and get values from previous row -0.37
how to bin computed data by percentile in an R data frame -0.61
Placeholder R output -0.11
R: collapse two time series to create vectors containing only the p... -1.56
compute mean of last 5 days of each month in R 0.00
Evaluate an expression within an environment inside a function -0.32
Database-like basic use +1.71
The inner workings of `NextMethod()` -0.52
How to calculate different well-known similarity or distance measur... -0.66
How can you insert a colon every two characters? -1.65
automatically convert NAs to 0 while reading CSV +0.96
Is it possible to pass a custom difference function to R's diff fun... +1.15
Add small histogram inside plot area of another plot 0.00