xkcd #2864: Compact Graphs ( imgs.xkcd.com )
Alt text:
People may complain about readability, but even with jpeg compression, extracting the data points is usually computationally feasible if there aren't too many of them.
Alt text:
People may complain about readability, but even with jpeg compression, extracting the data points is usually computationally feasible if there aren't too many of them.