Engauge Digitizer 4.1

Engauge Digitizer is a tool that converts an image file showing a graph or map, into numbers. The image file can come from a scanner, digital camera or screenshot. 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 Microsoft Excel and Gnumeric.
Main features:
- Automatic curve tracing of line plots
- Automatic point matching of point plots
- Automatic axes matching
- Automatic grid line removal for improved curve tracing
- Handles cartesian, polar, linear and logarithmic graphs
- Support for drag-and-drop and copy-and-paste makes data transfer fast and easy
- Image processing tools highlight data by removing grid lines and backgrounds
- Status bar suggestions guide beginners
- Context sensitive popup help windows reveal explain feature of the user interface
- Tutorials with pictures explain strategies for common operations
- Browser-based user manual is extensive yet easy to navigate
- Preview windows give immediate feedback while modifying settings
- Dates and times are imported with the Date/Time Converter
- Import support for common image file formats such as BMP, GIF, JPEG, PNG and XPM
- Export support for common software packages such as Microsoft Excel, OpenOffice CALC, gnuplot, gnumeric, MATLAB and Mathematica
- Engauge is available for a wide variety of platforms
- Engauge Digitizer is completely open source and free courtesy of Sourceforge, Trolltech and FFTW
Enhancements:
- the ability to move selected points using the arrow keys.