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SSPX is a program to calculate strain/strain rate from displacement/velocity data in two and three dimensions. SSPX is a full fledged inverse modeling program to calculate best fitting deformation tensors given displacement or velocity vectors at a minimum of three points in two dimensions, or four points in three dimensions.

SSPX works equally well on small deformation problems such as computing strain rates from Global Positioning System (GPS) data, and large deformation problems such as computing the strain in a highly deformed discrete element model (DEM). SSPX was made for geologists, but it can be used by more...

What's New

Version 5.3:
  • Uses Automatic Reference counting
  • Several optimizations for OS X 10.10 Yosemite
  • Greatly improved performance: Strain computations are much faster
  • Restore functionality of batch processing menus: Images files from these menus are saved to the ~/Pictures folder
  • Restores the functionality and speed of SSPX in OS X 10.10 Yosemite


  • OS X 10.6.6 or later

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Current Version (5.x)


Downloads 5,010
Version Downloads 64
License Commercial
Date 21 Dec 2014
Platform Intel 64 / OS X
Price $4.99