Cryo-EM: How to change box size and pixel size

Short info that could be of interest for people new in cryo-E.

From the command line in a linux terminal you can look up the box size of the map you just created in Chimera by using EMAN2:

e2iminfo.py map_you_want_to_know_BoxSize_off.mrc

You can then change the box size (in pixels) the map by using Relion from the command line.

For example if you want to change the box size of your map to 300x300x300 pixels from whatever it was before, you just type:

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