This open source digitizing software converts an image file showing a graph or map into numbers. The image file can come from a scanner, digital camera, or a screen-shot. The numbers can be read on the screen and written or copied to a spreadsheet. The process starts with an image file containing a graph or map. The final result is digitized data that can be used by other tools such as Gnumeric.

Here are some real-life examples:

• You need to recreate graphs in some decades-old documents in a modern format
• You are a graduate student gathering historical data from charts for your thesis
• You are a webmaster with visitor statistics charts and you want to do statistical analyses
• You made a bike trip and want to know how much distance you covered by tracing a map