get a table of coordinates from an image of a graph

*To*: mathgroup at smc.vnet.net*Subject*: [mg112416] get a table of coordinates from an image of a graph*From*: Peter Lindsay <pl0 at me.com>*Date*: Wed, 15 Sep 2010 04:36:43 -0400 (EDT)

I don't know if this is even possible, but if it is then someone on this list will know: I have a jpg image with a "wobbly" line cartesian graph [ X-Y axes etc ]. Is it possible by importing it, to get mathematica to "read" the graph and produce a table of coordinates ? Obviously the table could be scaled subsequently to produce desired results to match the original graph. Sorry if this is a daft question Peter Lindsay