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Rating Stats for

Ricardo Saporta

Rating
1533.06 (16,004th)
Reputation
41,631 (2,640th)
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Title Δ
how to make a list from json string -1.64
Find consecutive sequence of zeros in R -0.39
Convert first element of each factor to NA in R +1.43
changing one of the unique names inside a vector in R +1.13
using R apply to run a function on specific columns of a dataframe 0.00
Summarising data using dpply or similar -1.28
Create an Index of a combination of data.frame columns in R -1.52
Subsetting based on values of a different data frame in R +0.65
How to read data from a JSON object(in a file) into R? -1.70
How to identify the Maximum fluctuations in time series data in R? 0.00
Extracting values from strings with repeating structure -0.25
find range hi/low by grouping values if they are separated by less... +0.47
Skip NA values using "FUN=first" +0.36
R - how to call apply-like function on each row of dataframe with m... +0.00
Rearranging dataframes in R +2.36
What's the shortest way of creating a load of R objects with consec... +0.57
loading and naming multiple files into R +2.36
Split strings into columns in R where each string has a potentially... +0.86
R converting a long list of questionnaire choices to a dataframe wi... -1.47
Combination of Join with Not Join in data.table? 0.00
Regex to replace a period (.) when appearing alone or with spaces b... +0.95
Function to combine columns after a merge in R +0.36
Sum of hybrid data frames depending on multiple conditions in R 0.00
subsetting rows with logical comparisons when missing observations... -1.49
how to use black-and-white fill patterns instead of color coding on... -1.72
Rbind with new columns and data.table -1.27
Assigning into a dataframe by row -0.55
Can't understand the error message in the if condition in R -0.55
Density for multiple columns at a time in r +0.19
Seeking an better way to add columns in data.table from lookup table 0.00
Returning separate txt files from loop in R -1.41
How to self join a data.table on a condition -0.66
Date sequence in R spanning B.C.E. to A.D +0.41
R programming help in calculating averages at different intervals 0.00
generating a vector of difference between two vectors -1.30
min value(greater than 0) from column combined with row operation -0.59
Why does lapply() not retain my data.table keys? +2.86
R: creating a 3D matrix based on a colum value +0.15
How to use lattice in Rpy2 and save result to pdf? +0.60
sum of multiplication of two columns of a matrix in R +0.83
sort in 2 dimensions R 0.00
Simple way to delete dataframe rows robust to instances where no ro... -0.70
Error while deriving name of Month in R 0.00
Trying to aggregate Queried data using a forloop in R -0.09
percent correct for N trials at each intensity in R -0.42
How to move columns of a data frame into rows after the first few c... -0.43
creating new column after joining two data.tables +0.16
How can I build an inverted index from a data frame in R? -0.70
Caveat on usage of logical operators in if .. else if .. else -0.74
Suppress separator in paste when values are missing +0.58