thelatemail

thelatemail has asked 17 questions and find answers to 396 problems.

Stats

About

Full-time data monkey with a haircut accurately represented by my avatar. R, SQL, SAS, whatever life throws at me.
Currently teaching myself some GIS.

thelatemail questions

R - sequence of continuous cases where end1 == start2
gsub - reduce all repeating characters to one instance
cbind items from multiple lists recursively
rbind data.frames without names
Add multiple output variables using purrr and a predefined function
identify groups of linked episodes which chain together
data.table grouping separately on numeric and text variables
pick a random number, always with increasing value over last random number picked
R draw (abline + lm) line-of-best-fit through arbitrary point
simple examples of filter function, recursive option specifically

thelatemail answers

Sort dataframe by column group length in R
How to group by sum of measurement variables without explicitly naming them?
Splitting single column into four columns and count repeated pattern in R
Expanding a data.table to create grouped principal and alias combinations
Cumulative sum in R if value greater than 0
Calculating compound interest with vector of rates
Plotting incrementally in R and not resetting
How do I apply an index vector over a list of vectors?
filled.contour() in R: labeling axis - cex, las, et al
check if all names in df1 appear for each ID in df2