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David Arenburg

Rating
1732.38 (66th) 		Reputation
80,581 (1,024th)
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Title Δ
Adding up a vector without the sum function -1.25
How to calculate mean of a list without apply -0.09
How to get the proportion of Male and Female from each year +0.37
How do I remove a specific sign like a comma partially from a data... -1.07
R, select rows according to the rank of a certain column +0.74
Selecting & grouping dual-category data from a data frame -1.13
R, how to create a term-frequency matrix from a double column occur... +1.24
List elements to dataframes in R +0.38
Generating Multiple Lags in R with shorter code -2.01
How to repeat rows of a data frame with a specific pattern? +0.37
r mark different values for same user in row +0.75
how to use apply-like function on data frame? [please see details b... +1.27
How to compute aggregate and append result as new column in R +0.01
R: using if/else to append column in a list with objects of varying... -0.08
How to identify repeated variables within observations? 0.00
Should I have if statement or ifelse? +0.88
Conditional difference calculation in data table +0.35
Replace multiple numbers at once in data.frame R +1.62
Removing selective NA's valued rows in R +0.38
How to rename a column of a data frame with part of the data frame... +0.38
plotting CDF plots for various arrays in a data frame 0.00
In R: Replace values of a row if missing with values of another row +1.32
How can I replace values in data frame? (logistic regression) +0.73
r how to alter several columns based on condition (duplication in a... -0.52
create a dataframe with random numbers +0.93
How to convert list of dataframe to dataframe which has a new colum... -0.35
R - Adding Standard Deviation for Each Unique Factor Grouping +0.37
Conditionals in R +1.11
Finding "complete" groups in R -0.92
Combine variables into one variable in R +1.76
Looping Dupicate Records in R 0.00
How to transport columns from one matrix to another matrix accordin... -0.55
R: Shift values in single column of dataframe UP -1.58
Is there a ready made function to transform a matrix into data fram... +1.30
R how to merge different columns of data frame in one +0.08
How to find the classes corresponding to which the predictor values... -1.91
How to convert a list to a matrix? +1.40
as.data.frame flattens nested list into single row instead of creat... -0.47
Remove duplicates based on 2nd column condition +1.45
Rescaling a variable in R -0.13
removing columns with NA values only -0.63
R Language - lubridate - parse DateTime including Milliseconds 0.00
Replacing values in a data frame column -0.74
R column mean by factor +1.44
Extracting Elements from character vector 0.00
matching words in strings with variables in R +0.36
Move NAs within dataframe in R +1.24
r droplevel in big datafiles 0.00
Searching and Replacing between Two Data Frames with Apply Family 0.00
Rank a sorted dataset using apply function +1.48