Resumen de Pixel Conversion:: A Simple Way to Extract Coordinates of Points from a Printed Graph

Randall B. Shirts, Christian Aymard

• A very simple method is described for extracting the coordinates of points from printed graphs, student reports, or publications. One only needs a flatbed scanner (available now for $50-$200) and a desktop computer. This is a convenient and inexpensive alternative to the tedious traditional method using a ruler or to the more costly programs available commercially. A Windows program has been made available to perform the required operations.