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Matthew Lundberg

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1566.78 (4,478th) 		Reputation
36,309 (3,118th)
Page: 1 2 3 4 5 ... 17
Title Δ
Find index of change in a column -1.85
R data frame, for every row, how to divide value in specified colum... +0.56
Filter data frame based on duplicates in columns -0.13
use loop to calculate basic sum in R -0.09
How to use table output to create a new column in R -0.72
replacing values in a column with another column R +1.47
R - Adding numbers within a data frame cell together +2.36
Why does R not handle daylight savings consistently among years? 0.00
Is the the base stop function preventing me from parsing my list? 0.00
Standard deviation for a subset 0.00
Find the min and max from an unstructured array +1.67
How to rank within groups in R? -2.03
Assign a unique ID to each column that has the same unique characters 0.00
Merge without row multiplication in R 0.00
How to subset R dataframe based on string matching? +0.35
How to write an R function or loop that will print every third numb... +0.64
Reshape and mean calculation -0.00
Removing column from data.frame then creating new column with simil... 0.00
Arithmetic operation on selective rows in R +2.03
Replace 0s with next non-zero value in column R -0.06
removing duplicate words in a row 0.00
Rename duplicate records in R 0.00
Transforming list into dataframe of yes/no 0.00
extract entry of a vector or Matrix in R 0.00
R: write.csv - Excel shows blank lines breaks 0.00
Trying to create an ID for a vector in R 0.00
Need assistance in R, usinf a "for" loop to read in multi... -0.10
How do I split vector into columns using R 0.00
Get first 3 sections of IP address -0.52
How not to lose copied elements in setdiff in R? 0.00
R subsetting by partially matching row name +0.42
r substring string +1.26
In R, how to add TRUE / FALSE column if a value differs from previo... +0.93
In R, how to add TRUE / FALSE column if a value differs from previo... -0.74
Cumulative sum minus mean with R -0.59
Function not found in r 0.00
R plot x,y points generated in loop 0.00
Merging on pairs of values in one column of each data frame +0.42
R: replacing multiple regex with sub -2.03
How to solve a system of linear equations with b=0 in R (with free... 0.00
R program to take a variable name from a function [edited] 0.00
how to plot a graph on lattice with two different colors 0.00
How to generate a matrices A) each row has a single value of one; B... -1.37
How to create a matrix from a vector 0.00
Understading the Recall function in R 0.00
Analyzing Trade Data in R: Determining Market Share and Trade Trends 0.00
How do Capture Groups Beyond \9 get Referenced in R? -2.37
counting word combination frequency 0.00
For i in loops in R -0.39
rep function in R function 0.00