redmode questions

redmode answers

• Why does which work faster on a data frame column compared to a matrix column?
• qplot factor by condition
• Faceting plots by combinations of columns in ggplot2
• how to run mclust faster on 50000 records dataset
• Efficient multidimensional dynamic time warping implementation
• Why is the parallel package slower than just using apply?
• Get environment variables in a cloud function
• ggplot year by year comparison
• Converting a grouped continous variable into rows in R
• Subsetting based on values of a different data frame in R