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marbel

Rating
1453.62 (4,531,584th) 		Reputation
4,753 (34,962nd)
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Title Δ
Calculate a new variable in a series of subsets of one large database +0.38
How to cut a variable to 20 equal segments (for example) for severa... +4.73
Sort data frame column by factor -3.40
how to extract names from lists in R 0.00
Lookup table for new column in dataframe in R -1.63
factor levels order modified after aggregation with data.table -3.62
R: creating subset of rows (based on column name) for further analy... -0.03
Subsetting data frame by factor level -2.76
sample dataframe with dplyr +4.36
How to categorize points into areas from another set of points? 0.00
ggplot2 with fill and group +0.11
Use length and integer(0) to test a conditional expression 0.00
R: Create a new column in a data frame using a mapping from another... -2.71
Find two densities' point of intersection in R +3.07
carc data from rda file to numeric matrix +0.46
How to scale density plots (for several variables) in ggplot having... -3.93
In R, how do you differentiate a result is vector or matrix? +4.51
r - subtract one column from another in dataframe +4.54
In R how do I replace the missing values with the column mean? +4.47
Applying non-trivial functions to ordered subsets of data.table +4.37
Force ggplot to show 2 curve function 0.00
Find the repeated characters in a sequence in R -0.27
Calculate relative frequence of variable within dataframe in r +0.71
Variable selection methods -1.99
How to get the first 10 words in a string in R? -0.88
function usage and output of lapply 0.00
ifelse statements in R +4.27
Create Data Frame and Populate It R -1.84
Extract row in a double matrix +4.14
R plyr, data.table, apply certain columns of data.frame +4.00
R plyr, data.table, apply certain columns of data.frame -0.57
Altering a data frame in R -3.30
Merging data sets with unequal observations -1.24
Fitting a normal curve to a histogram 0.00
Applying PCA on the user's defined covariance matrix 0.00
R: Combine two functions to aggregate data using data.table -1.92
Multiple plots using loops in R +1.19
R binning dataset and surface plot +0.25
R binning dataset and surface plot +0.25
Quantiles on Continuous Time Data -1.59
Calculate marginal totals as a function within a ddply call +0.51
making a fully labelled scatter plot using R -1.67
How can I summarizing data statistics using R -3.34
Aggregate using data.table -3.37
Data frame with condition -1.82
Build Efficient R Filter +0.46
R Workspace and creating a factor variable from a numeric variable -0.99
R: Faceted bar chart with percentages labels independent for each p... 0.00
How to perform random forest/cross validation in R 0.00
Send/share sensitive R slidify presentation via email or other secu... 0.00