Engauge 9 is rewritten with Qt5.
This digitizing software converts an image file showing a graph or map, into
numbers.
The image file can come from a scanner, digital camera or 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.

New features already added to Engauge:

* Older Engauge files (before version 6) can be loaded
* Undo/redo of all operations means recovering from mistakes and experimenting
with options is painless
* Wizard provides an interactive tutorial to explain the basic steps
* Wizard creates a checklist guide to interactively leads user through steps
from file import to file export
* Cubic spline interpolation between points gives more accurate curves with
fewer points
* Axes Checker briefly highlights the axes when they are defined or modified,
to reveal entry mistakes
* Graph coordinates can be specified as date and time value, or as degrees,
minutes and seconds
* All settings dialogs are resizable so they can be enlarged as necessary to
display more information
* Import by drag-and-drop
* Replacement of Qt3 (which is at its end of life) by Qt5
* Much better zooming, with a fill mode that automatically zooms in on image
features, and rezooms when the application window is resized
* Color picking straight from the original image
* Uploadable error report generated when a programming error is encountered,
for identifying problems and improving user support
* Test suite for regression testing minimizes code breakage
as new features are added
* Multiple coordinate systems in the same image can be digitized in advanced mode
* Axes with only one known coordinate (floating axes) can be digitized in
advanced mode
* File import by pasting