Useful links for R programmers

• Efficient hashing: r-bloggers

Useful links for unix

• screen: stopped jobs / resume / kill. unix.stackexchange
• shell script - replace a character in a string: stackoverflow

Useful links for plots

R:

• ggplot2 tutorials: Edwin Chen's blog  CEB institute  Quick-R 
• Box plot: ggplot2
• Violin plot: ggplot2
• Multiple subplots:  sthda.com

Python:

• Plots: matplotlib
• Error in plot when DISPLAY is undefined: stack overflow.
• Drawing distribution line using histogram. stack overflow.