Current EMAN2.1 Release Information

This page will be updated frequently until the final EMAN2.1 release.

The current release of EMAN2.1 is a beta release. In software parlance, this means it is a pre-release which should have complete functionality but may still have some bugs.

NOTICE - projects in EMAN2.1 are not backwards compatible with EMAN2.0x due to the retirement of BDB. An upgrade program (e2projectupdate21.py) is provided to duplicate EMAN2.0x projects and make them 2.1 compatible, but it is strongly recommended that you NOT delete your 2.0x projects after conversion until you are sure that it worked completely.

Major changes

• The BDB system has been completely retired for EMAN2 programs
  • (it is still possible to read BDB files, of course)
• New e2refine_easy.py
  • Automatically computes gold-standard resolution as part of refinement (no extra computation)
  • Typically 2-10x faster than EMAN2.07 due to parameter optimization
  • Most parameters automatically selected (user can override if needed)
  • Generates full refinement report explaining which parameters were used and why
  • Automatic filtration of structures during refinement
• Improved infrastructure for single particle tomography
• Convert EMAN2.1 projects to Relion or Frealign, for comparative refinement
• Import Relion refinements to EMAN2.1, also for comparative refinement
• New 3-D viewer with support for multiple models, slices, isosurfaces, annotation, etc.
• Support for DM4, FEI Falcon, MRCS and other file format improvements
• MPI support for clusters now shared with SPARX with an easy to use installer
• Experimental Direct Detector movie-mode support
• Integrated tilt-validation and RCT