SDDS, or Self Describing Data Sets, is a way of storing and working with data that was developed at the Advanced Photon Source (APS) for use in the simulation and operation of accelerators. Because SDDS is very generic in nature, it can be used for processing and displaying data from essentially any source.
It allows to access data by calling the name of the column, moreover it supports binary conversion to compress data. It has some tools to plot but they very limited compared to gnuplot. At the moment the fastest way to use SDDS with gnuplot is converting data to ascii manually, but It would be very nice if gnuplot will support this standard natively with the example sintax:
plot "file.sdds" using xdata:ydata ...
I may start this task personally but I need to be taught some gnuplot code :)