Chase

Chase has asked 14 questions and find answers to 245 problems.

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Director, Advanced Analytics @ the Chicago Cubs

Chase questions

Identify duplicate data with a threshold
Algorithm to determine proper divisors
mapply recycling arguments
Recreate minitab normal probability plot
Calculate monthly average of ts object
Identify all objects of given class for further processing
Optimization with Constraints
Counts & Percentages in xTable, Sweave, R, cross tabulations
ggplot legend issue w/ geom_point and geom_text
Moving beyond R's optim function

Chase answers

boxplot from row values in a dataframe
Length of location sequence (given as a string) in R
apply() and calculating proportion of first row for all dataframe rows
R + ggplot2 - Aggregate Data by Intervals
Joining data frames without returning all matching combinations
Fastest way to get class vector from names in R
Find duplicated rows with original
Extract p value from multiple linear regression f-test [duplicate]
How to make a plot from summaryRprof?
converting summary created using 'by' to data.frame