Jon Spring questions

Jon Spring answers

• How to plot smoothed line (ggalt::xspline) plot with x-axis as factor
• Obtaining different results from sum() and '+'
• In ggplot, how to create line visualization with pointy edges (like "toothpicks")?
• Mutate over multiple columns, skip NA values
• Lookup Twitter followers in R
• update numeric variables for each row of a group as the minimum of a subgroup
• Make ggplot2 write the order of magnitude of the axis label only once at the top
• Create Combinations in R by Groups
• How to summarize data by-group, by creating dummy variables as the collapsing method
• R - merging two tables and calculating transfers between variable