StackRating

An Elo-based rating system for Stack Overflow

Home | About | Stats and Analysis | Get a Badge

Rating Stats for

David Arenburg

Rating
1732.38 (66th)

Reputation
80,581 (1,024th)

Page: 1 ... 25 26 27 28 29 ... 33

Title	Δ
How to create mean and s.d. columns in data.table	-2.22
adding successive four / n numbers in large matrix in R	-0.69
Apply a function to return a row from a list containing many data.f...	-0.06
Replace with NA except last row given ID with R	-0.04
How to extract a partially matched string into a new column?	+0.88
How to perform a subtract across only one column of a matrix?	-2.40
Compute the number of distinct values in col2 for each distinct val...	+0.91
import .csv file in R containing strings and numerics how to convert?	+1.96
R recode a column based on a string value	+0.02
Difference between numbers on a string	-2.32
R: Add new columns to a data.table containing many variables	+1.63
Complex subset of a data.frame	0.00
Cleaning Google search results in R	+1.44
Using the replace function to change value in R	+0.07
Add column by using strings of another column	+0.88
Reorder columns according to rankings specified in another data frame	-0.57
Merging two vectors with an 'or'	-1.60
Splitting a string into new rows in R	+1.27
grepl in R for strings of characters	+0.48
How do i use grepl on each column in a data frame?	-1.48
R: subsetting based on multiple conditions of the same column	+1.58
Can R do operations like cumsum in-place?	+2.19
plot time series using r, convert dates	-0.09
R filtering a dataframe for a proportion of columns meeting criteria	+0.39
How to "grep" list of columns not ending in "x"	-0.09
How can I find frequency of month per ID?	+1.82
Getting rows from data.table's group by	+0.41
How can I assign a custom factor depending on another column?	+0.61
Count how often a category occurs on a single day	0.00
how to apply a function that returns all data combinations	-0.38
List of data frames with names instead of numbers?	0.00
Create a list that counts from the beginning to the current value	+1.39
Plotting two graphs in one in R	+1.73
Convert an integer column to time HH:MM	+1.46
Split column name and convert data from wide to long format in R	+1.33
filter rows by a function over values of each row, data.table	+0.93
Combination of merge and aggregate in R	0.00
Sort file names that have increased numeric characters	+0.42
How to assign a value to a particular sequence in a column in r?	+1.45
Performing functions on grouped rows in an R dataframe	+0.61
Split different lengths values and bind to columns	-1.75
Line plot with average and shadow for min/max	+2.38
How to group data and do statistics using R	+0.43
Efficiently define new columns on data.table with conditions	0.00
Replacing missing data in a categorical variable in R	0.00
Combining rows + Concatenating values for a large dataset (Converti...	0.00
R: Filtering out non numerical values in dataframe	-0.83
R pass further argument to function	0.00
Time series plot or different time interval	0.00
R - if values match in column A, how often do their corresponding v...	0.00