How to rescale the pixel size of a tomogram
In some cases, it becomes necessary to rescale the pixel size (or more correctly, the voxel size) of a tomogram. Rescaling the voxel size prevents the need to reconstruct a second time at a different voxel size. All you need is IMOD, a calculator and the e2proc3d.py command utility of EMAN2.
Command:
e2proc3d.py --apix=CURRENT_PIXEL_SIZE --fouriershrink=YOUR_VALUE YOUR_TOMOGRAM.mrc YOUR_NEW_TOMOGRAM.mrc
If you want to iterate over a whole folder of mrc files, then you can use a 'for' loop:
for f in *.mrc; do e2proc3d.py --apix=10.00 --fouriershrink=1.216 "$f" "${f%.mrc}_12_16Apx.mrc"; done