usage: prog <imagefile> [<imagefile>] [imagefile] [options]
	Generates 2-D projections of a 3-D object or multiple 3-D objects. Various options for specifiying distribution of orientations
	and other options.

	Typical usage:
	e2project3d.py map.mrc --outfile=projections.hdf --orientgen=eman:delta=5 --sym=c3 --projector=standard --verbose=2

Option Type Description
--version None show program's version number and exit
--sym None Specify symmetry - choices are: c<n>, d<n>, h<n>, tet, oct, icos. If multiple input models are specified, multiple comma-separated symmetries may also be specified.
--orientgen None The orientation generator to use. See e2help.py orientgen. Example: --orientgen=eman:delta=3.0:inc_mirror=0:perturb=1
--outfile None Output file. Default is 'e2proj.img'
--smear int Used in conjunction with --phitoo, this will rotationally smear between phi steps. The user must specify the amount of smearing (typically 2-10)
--projector None Projector to use
--append, -a None Append to the output file
--verbose, -v int verbose level [0-9], higher number means higher level of verboseness
--check, -c None Checks to see if the command line arguments will work.
--nofilecheck None Turns file checking off in the check functionality - used by e2refine.py.
--postprocess str postprocessor to be applied to each projection. There can be more than one postprocessor, and they are applied in the order in which they are specified. See e2help.py processors for a complete list of available processors.
--cuda None Use CUDA for the projections.
--prethreshold None Applies an automatic threshold to the volume before projecting
--compressbits int Bits to keep when writing projections with compression. 0->lossless floating point. Default 10 (3 significant figures)
--ppid int Set the PID of the parent process, used for cross platform PPID
--parallel str Parallelism string

For more information go to emanwiki/EMAN2/Programs/e2project3d.