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Cole

Rating
1481.20 (4,492,109th)
Reputation
471 (286,697th)
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Title Δ
function that computes the average of 20 rolls several thousand tim... -0.78
R; How to sum the column, only if the vector is '>0'? -1.49
Duplicate Row and Create new Variable in R -0.38
R: Reorganizing rows of each dataframe within a list into a new lis... +2.30
How can I get all possible permutations of a 2 by 2 matrix using a... -0.18
Create while loop function that takes next largest value untill con... +0.32
How to multiply columns in a dataframe (or matrix) by another dataf... -1.25
Add common axis titles with lines/arrows for multiple plots in ggplot 0.00
How do I loop or apply an ifelse statement with 2 conditions over m... +0.29
Parallelization/Optimization of R loops containing *apply +2.08
Why is this for loop code as fast as apply()? +0.40
R - Is there a way to set dataframe column order based on another d... -1.53
How to vectorized a pair wise command in R? +0.50
How to build model from column index instead of name (see inside)? 0.00
Replacing missing values -1.07
Create Combinations in R by Groups +0.76
How to exclude entire Customer ID data based on a condition +0.20
How to add lines on combined ggplots, from points on one plot to po... -0.47
Add the value from the cellbelow to the cell above -0.02
Rearrange data to align with data +1.46
Is there a way using dplyr to create a new column based on dividing... +1.39
Keep the column names of a data.table in a user-defined function 0.00
storage problem in R. alternative to nested loop for creating array... 0.00
optimize R code for min() and sample() by group 0.00
Combine dataframes as function output in a single dataframe in R +1.77
How can I modify my code to include loop? +0.04
Convert data column to vector for plotting graph -1.99
How to optimize intersect of rows and columns in a matrix? +1.52
Disaggregate quarterly data to daily data in R keeping values? -0.10
Create list from two vectors with every combo of each +2.17
Efficiently fill 2D matrices by rows in a list in R 0.00
Check if date is between two dates in another data frame, and manip... +0.55
Filter a dataframe by keeping row dates of three days in a row pref... -0.69
Is there a way to create dummy variables for years that fall betwee... -1.68
How to impute missing values with mean by group and replace existin... +2.05
Taking the differences in rows using head and tail functions in R -1.72
Calculating mean of a large data frame for each row based on last 1... -1.31
find all possible 3 number combinations where sum is less than a gi... -1.20
Is there a R function to find make column values based on one colum... 0.00
Conditional combination of rows in one table 0.00
Pass variable name as argument inside data.table +0.01
Summarising rows and columns from known groupings +0.07
Creating multivariate Q-Q Plots in R 0.00
break long characters by "-" and identify the unique comp... -0.37
Is there anyway to make this R code more efficient? +0.02
Finding average for every 3 columns in dataframe in R -0.49
Calculating data and generating rows in R -1.01
Dot plot of multiple X and Y variables? -1.75
Optimizing a function in R 0.00
How to make R foreach loops efficient 0.00