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David Arenburg

Rating
1732.38 (66th) 		Reputation
80,581 (1,024th)
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Title Δ
How to get axis ticks labels with different colors within a single... +2.38
In R why is matrix a class but a vector is not? +1.38
How do I do a conditional sum which only looks between certain date... +0.50
Deleting rows that are duplicated in one column based on the condit... -0.03
Easily remove the variable prefix in model.matrix() 0.00
Creating multiple dataframes simulataneously based on different val... +2.09
Extracting a row from a data frame in R +1.76
Compare names between columns in R -0.02
Aggregate data in one column while maintaining/return data in other... -1.58
Subplot positioning 0.00
ggplot add percentage labels based on x-axis variables +0.41
Error: unexpected '}' in "}" if...print()...else...print() +1.95
Regular expression that both includes and excludes certain strings... +2.23
ggplot2 show separate mean values in box plot for grouped data -2.08
I want to make a table without summary function 0.00
Retrieve only top % of sub group in a data.frame -1.54
Populating a new column with a binary variable based on the values... +0.08
Complex aggregation of table -0.06
How to use data.table inside a function? -1.62
New variable with uniform random number bounded by constant and sec... -1.08
How can I create automatically indexed variables +0.84
What is the best practice to efficiently load files into R (Windows) -0.30
How to control legend box size and its elements (e.g text size) in... 0.00
grouping by date and treatment in R -0.30
Faster way to multiplication in data frame -0.55
I'm having trouble adding a column to a dataframe based on a function +1.40
How do I subtract two data frames of unequal length -0.35
Mean of the rows with "the same" name +0.48
Order multiple columns in R -0.04
data.table assignment by reference using lapply and also returning... 0.00
R split data into categories 0.00
Trying to Create a Scatterplot in R with Labels and Color Legend 0.00
find minimum for each name and return the according row +0.48
Calculate average monthly total by groups from data.table in R +0.10
Daily time series with ts.. how to specify start and end 0.00
Lag in dataframe +4.05
In logistic regression, How can I find a way to order the Coefficie... 0.00
multiple linear regression with apply or loop? in R 0.00
Extracting rows from selected column in repeated/grouped data -0.38
replace NA value with the group value -3.29
How to display special characters on heatmap 0.00
stacked bar plot with error bars in R +3.36
How to delete certain nodes from a regression tree built by `ctree(... 0.00
how to extract substring between symbol "_" and ".&q... -1.83
obtaining a vector from another vector -2.38
Reading information from the filename -0.38
How to use the same function on different intervals of a vector in... +0.86
Converting factor to numerical giving odd results -4.66
How to do this linear regression? -0.42
How to get certain row of grouped data frame? -0.06