Importing symmetry expanded particles from Relion 3.1 doesn't work [bug]


Recent versions of cryosparc have the capacity to import particles with orientation data intact from a star file. This is necessary for working with symmetry expanded particle sets.

However, if the offsets are specified in Angstroms, (_rlnOriginXAngst, _rlnOriginYAngst), rather than pixels, it fails, as it is looking for _rlnOriginX/_rlnOriginY. The former is what is now written by Relion 3.1. Would it be possible to add support for import of this column type?

I can make it work by just manually changing the header and multiplying the values by the appropriate conversion factor, but it would be less hassle if it worked out of the box.


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I second Oli’s request here. I had the same problem.

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HI @alburse, @olibclarke,

Thanks for reporting, this issue will be fixed in the next version of cryoSPARC!