Epidemiology

Skip Navigation LinksHome > Blogs > The Editors' Notepad > A TIDBIT by Jay Kaufman
The Editors' Notepad
The goal of this blog is to help EPIDEMIOLOGY authors produce papers that clearly and effectively communicate their science.
Wednesday, December 8, 2010
A TIDBIT by Jay Kaufman
As I mentioned in the editorial announcing this blog, I am open to ideas, great and small to blog about. This is one volunteered by Jay Kaufman:
 
“DataThief”
 
“DataThief III is a program to extract (reverse engineer) data points from a graph.  Typically, you scan a graph from a publication, load it into DataThief, and save the resulting coordinates, so you can use them in calculations or graphs that include your own data.”  [from the link]
 
What a nifty idea!  For many teaching examples, we’d like to analyze data presented in graphs and figures. It can be a painstaking process to read the data points off of the image, especially if the type is small or the resolution poor. We asked a colleague to do a validation run of test cases (where the original data were available). He reports that, while not completely user-friendly (getting the marker exactly on the data point isn't easy), the answers on a test case with known values were within rounding error. With some effort this could really come in handy.
 
 
Jan P Vandenbroucke
 
If you like to comment, Email me directly at epidemiologyblog@gmail.com or submt your comment via the journal which requires a password protected login. Unfortunately, comments are limited to 1000 characters.
About the Author

From the Editors of EPIDEMIOLOGY
A team of EPIDEMIOLOGY editors, led by Deputy Editor Emily DeVoto (emily.devoto@epidemiology-journal.com), contribute to this blog.

Blogs Archive
Share