DNA_plot                Plot a DNA double helix
Olympic_rings           Plot the Olympic rings
chunlian                Draw a Chunlian (Spring Festival couplet) using
                        ggplot2
clock                   Plot clock
convert_chr_to_matrix   convert a character to 01 matrix
convert_img_to_matrix   convert a imgage to 01 matrix
give_you_a_rose         Give you a rose
life_game               Life Game Simulation
make_LED                make a LED screen
my_wordcloud            Word cloud plot
plot.chr_mat            Plot a chr_mat
show_github_calendar    Plot a github style calendar
