989

989 has asked 21 questions and find answers to 70 problems.

Stats

About

About Me

989 questions

Sum of matrix elements between diagonals efficiently in R
Encoding changes of elements in a vector in R
Select the nth value of aggregated column after group by in R
Counting the number of ordered pairs in matrix in R
Extract sorted rows from matrix
All possible permutations of decimal numbers (hundredths) that sum up to 1 for a given length
Extract the first TRUE per row in logical matrix efficiently in R [duplicate]
doParallel (package) foreach does not work for big iterations in R
Generate m equally-spaced numbers that sum to 1 in R
Double precision (64-bit) representation of numeric value in R (sign, exponent, significand)

989 answers

Vectorize loop with repeating indices
Compare two dataframes for changes in variable value in R
Dynamically replace values of a column based on available values from another column
Why rbind and cbind produce same output with sapply
Rolling cumulative product based on elseif condition
How to keep rows with the same values in two variables in r?
Loop rename variables in R with assign()
R - unlist into dataframe
How to sort strings with integers by numeric ordering?
R: more efficient solution than this for-loop