What is APTo?

APTo is a tool to view, explore and analyse 3D Atom Probe data. It was designed to be quick and light so that it could be used on any computer to view large datasets. The 3D graphics is handled by OpenGL, through libQGLViewer. The user interface is handled by Qt. All of these are free for open-source software development tools and there is plenty of documentation and example to learn how to code using these tools. The coding language is C++ and APTo is completely cross-platform and has been tested on Windows and Linux machines. If you want to help with the coding and join the developers team, get in touch with us.

Future plans

It would be nice to see APTo growing in the next couple of years. I already have a few major features in mind that I would like to include at the earliest convenience. Minor things (like being able to edit range files on the fly) are already in the works. These are listed in the order they will be implemented. We aim at having most of these features implemented by the end of 2009.

Origin of APTo

To cut a long story short, APTo was born in late 2008. Little by little it grew until it became good enough to be used by other people. In 2009 the code was rewritten to make it more efficient, simple and user friendly. APTo is not meant to be a substitute for IVAS. Rather, it is meant to be a quick tool that can be installed on any computer to quickly open up and view 3DAP datasets. It was never meant to do any of the reconstruction or any of the advanced analysis. It's main use is for thos that do not access to IVAS and want to take a look at datasets. The name, "apto", in latin means "suitable".

Want to help?

If you are interested in what APTo should be in the future, get in touch. I would like to use all the help and suggestions I can get. As you can see, APTo is still in its 'infancy' and it would be nice to see it becoming a more functional code.


Many thanks to M. K. Miller and K. F. Russell for their introduction to the world of Atom Probe. Additionally, thanks to R. C. Atwood, A. Limaye, G. S. Bedi, A. Patel and F. Tariq.