Just used GraphClick for the first time. I wanted to use a graph from an old publication in an article to be published. The only copy of the illustration was from a pdf file I downloaded from the web. This "original" simply was not of publishable quality. The process went as follows:

pdf file > copy illustration with Acrobat > past into GraphClick > copy data points generated into Excel and regraph > paste into Photoshop Elements. The result a tiff file formated to my specs.

Spectacular