def mode_meridien(reconfile,
classavgstack,
classdocs,
partangles,
selectdoc,
maxshift,
outerrad,
outanglesdoc,
outaligndoc,
interpolation_method=1,
outliers=None,
goodclassparttemplate=None,
alignopt='apsh',
ringstep=1,
log=None,
verbose=False):
# Resample reference
recondata = EMAN2.EMData(reconfile)
idim = recondata['nx']
reconprep = prep_vol(recondata,
npad=2,
interpolation_method=interpolation_method)
# Initialize output angles
outangleslist = []
outalignlist = []
# Read class lists
classdoclist = glob.glob(classdocs)
partangleslist = read_text_row(partangles)
# Loop through class lists
for classdoc in classdoclist: # [classdoclist[32]]: #
# Strip out three-digit filenumber
classexample = os.path.splitext(classdoc)
classnum = int(classexample[0][-3:])
# Initial average
[avg_phi_init, avg_theta_init] = average_angles(partangleslist,
classdoc,
selectdoc=selectdoc)
# Look for outliers
if outliers:
[avg_phi_final, avg_theta_final] = average_angles(
partangleslist,
classdoc,
selectdoc=selectdoc,
init_angles=[avg_phi_init, avg_theta_init],
threshold=outliers,
goodpartdoc=goodclassparttemplate.format(classnum),
log=log,
verbose=verbose)
else:
[avg_phi_final, avg_theta_final] = [avg_phi_init, avg_theta_init]
# Compute re-projection
refprjreal = prgl(reconprep, [avg_phi_final, avg_theta_final, 0, 0, 0],
interpolation_method=1,
return_real=True)
# Align to class average
classavg = get_im(classavgstack, classnum)
# Alignment using self-correlation function
if alignopt == 'scf':
ang_align2d, sxs, sys, mirrorflag, peak = align2d_scf(classavg,
refprjreal,
maxshift,
maxshift,
ou=outerrad)
# Weird results
elif alignopt == 'align2d':
# Set search range
currshift = 0
txrng = tyrng = search_range(idim, outerrad, currshift, maxshift)
# Perform alignment
ang_align2d, sxs, sys, mirrorflag, peak = align2d(
classavg, refprjreal, txrng, tyrng, last_ring=outerrad)
# Direct3 (angles seemed to be quantized)
elif alignopt == 'direct3':
[[ang_align2d, sxs, sys, mirrorflag,
peak]] = align2d_direct3([classavg],
refprjreal,
maxshift,
maxshift,
ou=outerrad)
# APSH-like alignment (default)
else:
[[ang_align2d, sxs, sys, mirrorflag,
scale]] = apsh(refprjreal,
classavg,
outerradius=outerrad,
maxshift=maxshift,
ringstep=ringstep)
outalignlist.append([ang_align2d, sxs, sys, mirrorflag, 1])
msg = "Particle list %s: ang_align2d=%s sx=%s sy=%s mirror=%s\n" % (
classdoc, ang_align2d, sxs, sys, mirrorflag)
print_log_msg(msg, log, verbose)
# Check for mirroring
if mirrorflag == 1:
tempeulers = list(
compose_transform3(avg_phi_final, avg_theta_final, 0, 0, 0, 0,
1, 0, 180, 0, 0, 0, 0, 1))
combinedparams = list(
compose_transform3(tempeulers[0], tempeulers[1], tempeulers[2],
tempeulers[3], tempeulers[4], 0, 1, 0, 0,
-ang_align2d, 0, 0, 0, 1))
else:
combinedparams = list(
compose_transform3(avg_phi_final, avg_theta_final, 0, 0, 0, 0,
1, 0, 0, -ang_align2d, 0, 0, 0, 1))
# compose_transform3: returns phi,theta,psi, tx,ty,tz, scale
outangleslist.append(combinedparams)
# End class-loop
write_text_row(outangleslist, outanglesdoc)
write_text_row(outalignlist, outaligndoc)
print_log_msg(
'Wrote alignment parameters to %s and %s\n' %
(outanglesdoc, outaligndoc), log, verbose)
del recondata # Clean up
def main_proj_compare(classavgstack,
reconfile,
outdir,
options,
mode='viper',
prjmethod='trilinear',
classangles=None,
partangles=None,
selectdoc=None,
verbose=False,
displayYN=False):
"""
Main function overseeing various projection-comparison modes.
Arguments:
classavgstack : Input image stack
reconfile : Map of which to generate projections (an optionally perform alignment)
outdir : Output directory
mode : Mode, viper (pre-existing angles for each input image), projmatch (angles from internal projection-matching)
verbose : (boolean) Whether to write additional information to screen
options : (list) Command-line options, run 'sxproj_compare.py -h' for an exhaustive list
classangles : Angles and shifts for each input class average
partangles : Angles and shifts for each particle (mode meridien)
selectdoc : Selection file for included images
prjmethod : Interpolation method to use
displayYN : (boolean) Whether to automatically open montage
"""
# Expand path for outputs
refprojstack = os.path.join(outdir, 'refproj.hdf')
refanglesdoc = os.path.join(outdir, 'refangles.txt')
outaligndoc = os.path.join(outdir, 'docalign2d.txt')
# If not an input, will create an output, in modes projmatch
if classangles == None:
classangles = os.path.join(outdir, 'docangles.txt')
# You need either input angles (mode viper) or to calculate them on the fly (mode projmatch)
if mode == 'viper':
sp_global_def.ERROR(
"\nERROR!! Input alignment parameters not specified.",
__file__, 1)
sxprint('Type %s --help to see available options\n' %
os.path.basename(__file__))
exit()
# Check if inputs exist
check(classavgstack, verbose=verbose)
check(reconfile, verbose=verbose)
if verbose: sxprint('')
# Check that dimensions of images and volume agree (maybe rescale volume)
voldim = EMAN2.EMData(reconfile).get_xsize()
imgdim = EMAN2.EMData(classavgstack, 0).get_xsize()
if voldim != imgdim:
sp_global_def.ERROR(
"\nERROR!! Dimension of input volume doesn't match that of image stack: %s vs. %s"
% (voldim, imgdim), __file__, 1)
scale = float(
imgdim
) / voldim # only approximate, since full-sized particle radius is arbitrary
msg = 'The command to resize the volume will be of the form:\n'
msg += 'e2proc3d.py %s resized_vol.hdf --scale=%1.5f --clip=%s,%s,%s\n' % (
reconfile, scale, imgdim, imgdim, imgdim)
msg += 'Check the file in the ISAC directory named "README_shrink_ratio.txt" for confirmation.\n'
sxprint(msg)
exit()
# Here if you want to be fancy, there should be an option to chose the projection method,
# the mechanism can be copied from sxproject3d.py PAP
if prjmethod == 'trilinear':
method_num = 1
elif prjmethod == 'gridding':
method_num = -1
elif prjmethod == 'nn':
method_num = 0
else:
sp_global_def.ERROR(
"\nERROR!! Valid projection methods are: trilinear (default), gridding, and nn (nearest neighbor).",
__file__, 1)
sxprint('Usage:\n%s' % USAGE)
exit()
# Set output directory and log file name
log, verbose = prepare_outdir_log(outdir, verbose)
# In case class averages include discarded images, apply selection file
if mode == 'viper':
if selectdoc:
goodavgs, extension = os.path.splitext(
os.path.basename(classavgstack))
newclasses = os.path.join(outdir, goodavgs + "_kept" + extension)
# e2proc2d appends to existing files, so rename existing output
if os.path.exists(newclasses):
renamefile = newclasses + '.bak'
print_log_msg(
"Selected-classes stack %s exists, renaming to %s" %
(newclasses, renamefile), log, verbose)
print_log_msg("mv %s %s\n" % (newclasses, renamefile), log,
verbose)
os.rename(newclasses, renamefile)
print_log_msg(
'Creating subset of %s to %s based on selection list %s' %
(classavgstack, newclasses, selectdoc), log, verbose)
cmd = "e2proc2d.py %s %s --list=%s" % (classavgstack, newclasses,
selectdoc)
print_log_msg(cmd, log, verbose)
os.system(cmd)
sxprint('')
# Update class-averages
classavgstack = newclasses
# align de novo to reference map
if mode == 'projmatch':
# Generate reference projections
print_log_msg(
'Projecting %s to output %s using an increment of %s degrees using %s symmetry'
% (reconfile, refprojstack, options.delta, options.symmetry), log,
verbose)
cmd = 'sxproject3d.py %s %s --delta=%s --method=S --phiEqpsi=Minus --symmetry=%s' % (
reconfile, refprojstack, options.delta, options.symmetry)
if options.prjmethod == 'trilinear': cmd += ' --trilinear'
cmd += '\n'
print_log_msg(cmd, log, verbose)
project3d(reconfile,
refprojstack,
delta=options.delta,
symmetry=options.symmetry)
# Export projection angles
print_log_msg(
"Exporting projection angles from %s to %s" %
(refprojstack, refanglesdoc), log, verbose)
cmd = "sp_header.py %s --params=xform.projection --import=%s\n" % (
refprojstack, refanglesdoc)
print_log_msg(cmd, log, verbose)
header(refprojstack, 'xform.projection', fexport=refanglesdoc)
# Perform multi-reference alignment
if options.align == 'ali2d':
projdir = os.path.join(
outdir, 'Projdir') # used if input angles no provided
if os.path.isdir(projdir):
print_log_msg('Removing pre-existing directory %s' % projdir,
log, verbose)
print_log_msg('rm -r %s\n' % projdir, log, verbose)
shutil.rmtree(
projdir) # os.rmdir only removes empty directories
# Zero out alignment parameters in header
print_log_msg(
'Zeroing out alignment parameters in header of %s' %
classavgstack, log, verbose)
cmd = 'sxheader.py %s --params xform.align2d --zero\n' % classavgstack
print_log_msg(cmd, log, verbose)
header(classavgstack, 'xform.align2d', zero=True)
# Perform multi-reference alignment
msg = 'Aligning images in %s to projections %s with a radius of %s and a maximum allowed shift of %s' % (
classavgstack, refprojstack, options.matchrad,
options.matchshift)
print_log_msg(msg, log, verbose)
cmd = 'sxmref_ali2d.py %s %s %s --ou=%s --xr=%s --yr=%s\n' % (
classavgstack, refprojstack, projdir, options.matchrad,
options.matchshift, options.matchshift)
print_log_msg(cmd, log, verbose)
mref_ali2d(classavgstack,
refprojstack,
projdir,
ou=options.matchrad,
xrng=options.matchshift,
yrng=options.matchshift)
# Export alignment parameters
print_log_msg(
'Exporting angles from %s into %s' %
(classavgstack, classangles), log, verbose)
cmd = "sp_header.py %s --params=xform.align2d --export=%s\n" % (
classavgstack, classangles)
print_log_msg(cmd, log, verbose)
header(classavgstack, 'xform.align2d', fexport=classangles)
# By default, use AP SH
else:
apsh(refprojstack,
classavgstack,
outangles=classangles,
refanglesdoc=refanglesdoc,
outaligndoc=outaligndoc,
outerradius=options.matchrad,
maxshift=options.matchshift,
ringstep=options.matchstep,
log=log,
verbose=verbose)
# Diagnostic
alignlist = read_text_row(
classangles) # contain 2D alignment parameters
nimg1 = EMAN2.EMUtil.get_image_count(classavgstack)
assert len(alignlist) == nimg1, "MRK_DEBUG"
# Get alignment parameters from MERIDIEN
if mode == 'meridien':
continueTF = True # Will proceed unless some information is missing
if not partangles:
sp_global_def.ERROR(
"\nERROR!! Input alignment parameters not provided.", __file__,
1)
continueTF = False
if not continueTF:
sxprint('Type %s --help to see available options\n' %
os.path.basename(__file__))
exit()
if not options.classdocs or options.outliers:
classdir = os.path.join(outdir, 'Byclass')
if not os.path.isdir(classdir): os.makedirs(classdir)
if options.outliers:
goodclassparttemplate = os.path.join(
classdir, 'goodpartsclass{0:03d}.txt')
else:
goodclassparttemplate = None
if not options.classdocs:
classmap = os.path.join(classdir, 'classmap.txt')
classdoc = os.path.join(classdir, 'docclass{0:03d}.txt')
options.classdocs = os.path.join(classdir, 'docclass*.txt')
# Separate particles by class
vomq(classavgstack,
classmap,
classdoc,
log=log,
verbose=verbose)
mode_meridien(reconfile,
classavgstack,
options.classdocs,
partangles,
selectdoc,
options.refineshift,
options.refinerad,
classangles,
outaligndoc,
interpolation_method=method_num,
outliers=options.outliers,
goodclassparttemplate=goodclassparttemplate,
alignopt=options.align,
ringstep=options.refinestep,
log=log,
verbose=verbose)
# Import Euler angles
print_log_msg(
"Importing parameter information into %s from %s" %
(classavgstack, classangles), log, verbose)
cmd = "sp_header.py %s --params=xform.projection --import=%s\n" % (
classavgstack, classangles)
print_log_msg(cmd, log, verbose)
header(classavgstack, 'xform.projection', fimport=classangles)
# Make comparison stack between class averages (images 0,2,4,...) and re-projections (images 1,3,5,...)
compstack = compare_projs(reconfile,
classavgstack,
classangles,
outdir,
interpolation_method=method_num,
log=log,
verbose=verbose)
# Optionally pop up e2display
if displayYN:
sxprint('Opening montage')
cmd = "e2display.py %s\n" % compstack
sxprint(cmd)
os.system(cmd)
sxprint("Done!")
def apsh(refimgs,
imgs2align,
outangles=None,
refanglesdoc=None,
outaligndoc=None,
outerradius=-1,
maxshift=0,
ringstep=1,
mode="F",
log=None,
verbose=False):
"""
Generates polar representations of a series of images to be used as alignment references.
Arguments:
refimgs : Input reference image stack (filename or EMData object)
imgs2align : Image stack to be aligned (filename or EMData object)
outangles : Output Euler angles doc file
refanglesdoc : Input Euler angles for reference projections
outaligndoc : Output 2D alignment doc file
outerradius : Outer alignment radius
maxshift : Maximum shift allowed
ringstep : Alignment radius step size
mode : Mode, full circle ("F") vs. half circle ("H")
log : Logger object
verbose : (boolean) Whether to write additional information to screen
"""
# Generate polar representation(s) of reference(s)
alignrings, polarrefs = mref2polar(refimgs,
outerradius=outerradius,
ringstep=ringstep,
log=log,
verbose=verbose)
# Read image stack (as a filename or already an EMDataobject)
if isinstance(imgs2align, str):
imagestacklist = EMData.read_images(imgs2align)
else:
imagestacklist = [imgs2align]
# Get number of images
numimg = len(imagestacklist)
# Get image dimensions (assuming square, and that images and references have the same dimension)
idim = imagestacklist[0]['nx']
# Calculate image center
halfdim = idim / 2 + 1
# Set constants
currshift = 0
scale = 1
# Initialize output angles
outangleslist = []
outalignlist = []
if outerradius <= 0:
outerradius = halfdim - 3
# Set search range
txrng = tyrng = search_range(idim, outerradius, currshift, maxshift)
print_log_msg(
'Running multireference alignment allowing a maximum shift of %s\n' %
maxshift, log, verbose)
# Loop through images
for imgindex in range(numimg):
currimg = imagestacklist[imgindex]
# Perform multi-reference alignment (adapted from alignment.mref_ali2d)
best2dparamslist = [
angt, sxst, syst, mirrorfloat, bestreffloat, peakt
] = Util.multiref_polar_ali_2d(currimg, polarrefs, txrng, tyrng,
ringstep, mode, alignrings, halfdim,
halfdim)
bestref = int(bestreffloat)
mirrorflag = int(mirrorfloat)
# Store parameters
params2dlist = [angt, sxst, syst, mirrorflag, scale]
outalignlist.append(params2dlist)
if refanglesdoc:
refangleslist = read_text_row(refanglesdoc)
besteulers = refangleslist[bestref]
else:
besteulers = [0] * 5
# Check for mirroring
if mirrorflag == 1:
tempeulers = list(
compose_transform3(besteulers[0], besteulers[1], besteulers[2],
besteulers[3], besteulers[4], 0, 1, 0, 180,
0, 0, 0, 0, 1))
combinedparams = list(
compose_transform3(tempeulers[0], tempeulers[1], tempeulers[2],
tempeulers[3], tempeulers[4], 0, 1, 0, 0,
-angt, 0, 0, 0, 1))
else:
combinedparams = list(
compose_transform3(besteulers[0], besteulers[1], besteulers[2],
besteulers[3], besteulers[4], 0, 1, 0, 0,
-angt, 0, 0, 0, 1))
# compose_transform3: returns phi,theta,psi, tx,ty,tz, scale
outangleslist.append(combinedparams)
# Set transformations as image attribute
set_params2D(currimg, params2dlist, xform="xform.align2d"
) # sometimes I get a vector error with sxheader
set_params_proj(currimg, besteulers,
xform="xform.projection") # use shifts
if outangles or outaligndoc:
msg = ''
if outangles:
write_text_row(outangleslist, outangles)
msg += 'Wrote alignment angles to %s\n' % outangles
print_log_msg(msg, log, verbose)
if outaligndoc:
write_text_row(outalignlist, outaligndoc)
msg += 'Wrote 2D alignment parameters to %s\n' % outaligndoc
print_log_msg(msg, log, verbose)
return outalignlist
def compare_projs(reconfile,
classavgstack,
inputanglesdoc,
outdir,
interpolation_method=1,
log=None,
verbose=False):
"""
Make comparison stack between class averages (even-numbered (starts from 0)) and re-projections (odd-numbered).
Arguments:
reconfile : Input volume from which to generate re-projections
classavgstack ; Input image stack
inputanglesdoc : Input Euler angles doc
outdir ; Output directory
interpolation_method : Interpolation method: nearest neighbor (nn, 0), trilinear (1, default), gridding (-1)
log : Logger object
verbose : (boolean) Whether to write additional information to screen
Returns:
compstack : Stack of comparisons between input image stack (even-numbered (starts from 0)) and input volume (odd-numbered)
"""
recondata = EMAN2.EMData(reconfile)
nx = recondata.get_xsize()
# Resample reference
reconprep = prep_vol(recondata,
npad=2,
interpolation_method=interpolation_method)
ccclist = []
# Here you need actual radius to compute proper ccc's, but if you do, you have to deal with translations, PAP
mask = model_circle(nx // 2 - 2, nx, nx)
mask.write_image(os.path.join(outdir, 'maskalign.hdf'))
compstack = os.path.join(outdir, 'comp-proj-reproj.hdf')
# Number of images may have changed
nimg1 = EMAN2.EMUtil.get_image_count(classavgstack)
angleslist = read_text_row(inputanglesdoc)
for imgnum in range(nimg1):
# Get class average
classimg = get_im(classavgstack, imgnum)
# Compute re-projection
prjimg = prgl(reconprep,
angleslist[imgnum],
interpolation_method=1,
return_real=False)
# Calculate 1D power spectra
rops_dst = rops_table(classimg * mask)
rops_src = rops_table(prjimg)
# Set power spectrum of reprojection to the data.
# Since data has an envelope, it would make more sense to set data to reconstruction,
# but to do it one would have to know the actual resolution of the data.
# you can check sxprocess.py --adjpw to see how this is done properly PAP
table = [0.0] * len(rops_dst) # initialize table
for j in range(len(rops_dst)):
table[j] = sqrt(rops_dst[j] / rops_src[j])
prjimg = fft(filt_table(
prjimg,
table)) # match FFT amplitudes of re-projection and class average
cccoeff = ccc(prjimg, classimg, mask)
#print imgnum, cccoeff
classimg.set_attr_dict({'cross-corr': cccoeff})
prjimg.set_attr_dict({'cross-corr': cccoeff})
montagestack = []
montagestack.append(prjimg)
montagestack.append(classimg)
comparison_pair = montage2(montagestack, ncol=2, marginwidth=1)
comparison_pair.write_image(compstack, imgnum)
ccclist.append(cccoeff)
del angleslist
meanccc = sum(ccclist) / nimg1
print_log_msg("Average CCC is %s\n" % meanccc, log, verbose)
nimg2 = EMAN2.EMUtil.get_image_count(compstack)
for imgnum in range(nimg2): # xrange will be deprecated in Python3
prjimg = get_im(compstack, imgnum)
meanccc1 = prjimg.get_attr_default('mean-cross-corr', -1.0)
prjimg.set_attr_dict({'mean-cross-corr': meanccc})
write_header(compstack, prjimg, imgnum)
return compstack
def average_angles(alignlist,
partdoc,
selectdoc=None,
init_angles=None,
threshold=None,
goodpartdoc=None,
log=None,
verbose=False):
"""
Computes a vector average of a set of particles' Euler angles phi and theta.
Arguments:
alignlist : Alignment parameter doc file, i.e., from MERIDIEN refinment
partdoc : List of particle indices whose angles should be averaged
selectdoc : Input substack selection file if particles removed before refinement (e.g., Substack/isac_substack_particle_id_list.txt)
init_angles : List (2 elements) with initial phi and theta angles, for excluding outliers
threshold : Angular threshold (degrees) beyond which particles exceeding this angular difference from init_angles will be excluded
goodpartdoc : Output list of retained particles if a threshold was specified
log : Logger object
verbose : (boolean) Whether to write additional information to screen
Returns:
list of 2 elements:
avg_phi
avg_theta
"""
# Read alignment parameters
if isinstance(alignlist, str): alignlist = read_text_row(outaligndoc)
# (If loading the same parameters repeatedly, better to read the file once externally and pass only the list.)
# Read class list
partlist = read_text_row(partdoc)
if selectdoc:
selectlist = read_text_row(selectdoc)
else:
selectlist = None
sum_phi = np.array([0.0, 0.0])
sum_theta = np.array([0.0, 0.0])
totparts = 0
num_outliers = 0
goodpartlist = []
goodpartcounter = 0
# Loop through particles
for totpartnum in partlist:
if selectlist:
goodpartnum = selectlist.index(totpartnum)
else:
goodpartnum = totpartnum[0]
try:
phi_deg = alignlist[goodpartnum][0]
theta_deg = alignlist[goodpartnum][1]
phi_rad = np.deg2rad(phi_deg)
theta_rad = np.deg2rad(theta_deg)
except IndexError:
msg = "\nERROR!! %s tries to access particle #%s" % (partdoc,
goodpartnum)
numalignparts = len(alignlist)
msg += "\nAlignment doc file has only %s entries" % (numalignparts)
msg += "\nMaybe try substack selection file with flag '--select <substack_select>'?"
sp_global_def.ERROR(msg, __file__, 1)
exit()
if init_angles:
angdif = angle_diff(init_angles, [phi_deg, theta_deg])
if angdif > 180: angdif = 360.0 - angdif
totparts += 1
# Exclude particles exceeding optional threshold
if threshold == None or angdif < threshold:
sum_phi += (np.cos(phi_rad), np.sin(phi_rad))
sum_theta += (np.cos(theta_rad), np.sin(theta_rad))
goodpartlist.append(goodpartnum)
goodpartcounter += 1
else:
num_outliers += 1
# Compute final average
avg_phi = degrees(atan2(sum_phi[1], sum_phi[0]))
avg_theta = degrees(atan2(sum_theta[1], sum_theta[0]))
# Clean up, might reuse
del alignlist
del partlist
del selectlist
msg = "Particle list %s: average angles (%s, %s)" % (partdoc, avg_phi,
avg_theta)
print_log_msg(msg, log, verbose)
if threshold:
msg = "Found %s out of %s outliers exceeding an angle difference of %s degrees from initial estimate" % (
num_outliers, totparts, threshold)
print_log_msg(msg, log, verbose)
if goodpartdoc:
if goodpartcounter > 0:
write_text_row(goodpartlist, goodpartdoc)
msg = "Wrote %s particles to %s" % (goodpartcounter,
goodpartdoc)
print_log_msg(msg, log, verbose)
else:
msg = "WARNING!! Kept 0 particles from class %s" % partdoc
print_log_msg(msg, log, verbose)
[avg_phi, avg_theta] = init_angles
return [avg_phi, avg_theta]
def main():
global Tracker, Blockdata
progname = os.path.basename(sys.argv[0])
usage = progname + " --output_dir=output_dir --isac_dir=output_dir_of_isac "
parser = optparse.OptionParser(usage, version=sp_global_def.SPARXVERSION)
parser.add_option(
"--pw_adjustment",
type="string",
default="analytical_model",
help=
"adjust power spectrum of 2-D averages to an analytic model. Other opions: no_adjustment; bfactor; a text file of 1D rotationally averaged PW",
)
#### Four options for --pw_adjustment:
# 1> analytical_model(default);
# 2> no_adjustment;
# 3> bfactor;
# 4> adjust_to_given_pw2(user has to provide a text file that contains 1D rotationally averaged PW)
# options in common
parser.add_option(
"--isac_dir",
type="string",
default="",
help="ISAC run output directory, input directory for this command",
)
parser.add_option(
"--output_dir",
type="string",
default="",
help="output directory where computed averages are saved",
)
parser.add_option(
"--pixel_size",
type="float",
default=-1.0,
help=
"pixel_size of raw images. one can put 1.0 in case of negative stain data",
)
parser.add_option(
"--fl",
type="float",
default=-1.0,
help=
"low pass filter, = -1.0, not applied; =0.0, using FH1 (initial resolution), = 1.0 using FH2 (resolution after local alignment), or user provided value in absolute freqency [0.0:0.5]",
)
parser.add_option("--stack",
type="string",
default="",
help="data stack used in ISAC")
parser.add_option("--radius", type="int", default=-1, help="radius")
parser.add_option("--xr",
type="float",
default=-1.0,
help="local alignment search range")
# parser.add_option("--ts", type ="float", default =1.0, help= "local alignment search step")
parser.add_option(
"--fh",
type="float",
default=-1.0,
help="local alignment high frequencies limit",
)
# parser.add_option("--maxit", type ="int", default =5, help= "local alignment iterations")
parser.add_option("--navg",
type="int",
default=1000000,
help="number of aveages")
parser.add_option(
"--local_alignment",
action="store_true",
default=False,
help="do local alignment",
)
parser.add_option(
"--noctf",
action="store_true",
default=False,
help=
"no ctf correction, useful for negative stained data. always ctf for cryo data",
)
parser.add_option(
"--B_start",
type="float",
default=45.0,
help=
"start frequency (Angstrom) of power spectrum for B_factor estimation",
)
parser.add_option(
"--Bfactor",
type="float",
default=-1.0,
help=
"User defined bactors (e.g. 25.0[A^2]). By default, the program automatically estimates B-factor. ",
)
(options, args) = parser.parse_args(sys.argv[1:])
adjust_to_analytic_model = (True if options.pw_adjustment
== "analytical_model" else False)
no_adjustment = True if options.pw_adjustment == "no_adjustment" else False
B_enhance = True if options.pw_adjustment == "bfactor" else False
adjust_to_given_pw2 = (
True if not (adjust_to_analytic_model or no_adjustment or B_enhance)
else False)
# mpi
nproc = mpi.mpi_comm_size(mpi.MPI_COMM_WORLD)
myid = mpi.mpi_comm_rank(mpi.MPI_COMM_WORLD)
Blockdata = {}
Blockdata["nproc"] = nproc
Blockdata["myid"] = myid
Blockdata["main_node"] = 0
Blockdata["shared_comm"] = mpi.mpi_comm_split_type(
mpi.MPI_COMM_WORLD, mpi.MPI_COMM_TYPE_SHARED, 0, mpi.MPI_INFO_NULL)
Blockdata["myid_on_node"] = mpi.mpi_comm_rank(Blockdata["shared_comm"])
Blockdata["no_of_processes_per_group"] = mpi.mpi_comm_size(
Blockdata["shared_comm"])
masters_from_groups_vs_everything_else_comm = mpi.mpi_comm_split(
mpi.MPI_COMM_WORLD,
Blockdata["main_node"] == Blockdata["myid_on_node"],
Blockdata["myid_on_node"],
)
Blockdata["color"], Blockdata[
"no_of_groups"], balanced_processor_load_on_nodes = sp_utilities.get_colors_and_subsets(
Blockdata["main_node"],
mpi.MPI_COMM_WORLD,
Blockdata["myid"],
Blockdata["shared_comm"],
Blockdata["myid_on_node"],
masters_from_groups_vs_everything_else_comm,
)
# We need two nodes for processing of volumes
Blockdata["node_volume"] = [
Blockdata["no_of_groups"] - 3,
Blockdata["no_of_groups"] - 2,
Blockdata["no_of_groups"] - 1,
] # For 3D stuff take three last nodes
# We need two CPUs for processing of volumes, they are taken to be main CPUs on each volume
# We have to send the two myids to all nodes so we can identify main nodes on two selected groups.
Blockdata["nodes"] = [
Blockdata["node_volume"][0] * Blockdata["no_of_processes_per_group"],
Blockdata["node_volume"][1] * Blockdata["no_of_processes_per_group"],
Blockdata["node_volume"][2] * Blockdata["no_of_processes_per_group"],
]
# End of Blockdata: sorting requires at least three nodes, and the used number of nodes be integer times of three
sp_global_def.BATCH = True
sp_global_def.MPI = True
if adjust_to_given_pw2:
checking_flag = 0
if Blockdata["myid"] == Blockdata["main_node"]:
if not os.path.exists(options.pw_adjustment):
checking_flag = 1
checking_flag = sp_utilities.bcast_number_to_all(
checking_flag, Blockdata["main_node"], mpi.MPI_COMM_WORLD)
if checking_flag == 1:
sp_global_def.ERROR("User provided power spectrum does not exist",
myid=Blockdata["myid"])
Tracker = {}
Constants = {}
Constants["isac_dir"] = options.isac_dir
Constants["masterdir"] = options.output_dir
Constants["pixel_size"] = options.pixel_size
Constants["orgstack"] = options.stack
Constants["radius"] = options.radius
Constants["xrange"] = options.xr
Constants["FH"] = options.fh
Constants["low_pass_filter"] = options.fl
# Constants["maxit"] = options.maxit
Constants["navg"] = options.navg
Constants["B_start"] = options.B_start
Constants["Bfactor"] = options.Bfactor
if adjust_to_given_pw2:
Constants["modelpw"] = options.pw_adjustment
Tracker["constants"] = Constants
# -------------------------------------------------------------
#
# Create and initialize Tracker dictionary with input options # State Variables
# <<<---------------------->>>imported functions<<<---------------------------------------------
# x_range = max(Tracker["constants"]["xrange"], int(1./Tracker["ini_shrink"])+1)
# y_range = x_range
####-----------------------------------------------------------
# Create Master directory and associated subdirectories
line = time.strftime("%Y-%m-%d_%H:%M:%S", time.localtime()) + " =>"
if Tracker["constants"]["masterdir"] == Tracker["constants"]["isac_dir"]:
masterdir = os.path.join(Tracker["constants"]["isac_dir"], "sharpen")
else:
masterdir = Tracker["constants"]["masterdir"]
if Blockdata["myid"] == Blockdata["main_node"]:
msg = "Postprocessing ISAC 2D averages starts"
sp_global_def.sxprint(line, "Postprocessing ISAC 2D averages starts")
if not masterdir:
timestring = time.strftime("_%d_%b_%Y_%H_%M_%S", time.localtime())
masterdir = "sharpen_" + Tracker["constants"]["isac_dir"]
os.makedirs(masterdir)
else:
if os.path.exists(masterdir):
sp_global_def.sxprint("%s already exists" % masterdir)
else:
os.makedirs(masterdir)
sp_global_def.write_command(masterdir)
subdir_path = os.path.join(masterdir, "ali2d_local_params_avg")
if not os.path.exists(subdir_path):
os.mkdir(subdir_path)
subdir_path = os.path.join(masterdir, "params_avg")
if not os.path.exists(subdir_path):
os.mkdir(subdir_path)
li = len(masterdir)
else:
li = 0
li = mpi.mpi_bcast(li, 1, mpi.MPI_INT, Blockdata["main_node"],
mpi.MPI_COMM_WORLD)[0]
masterdir = mpi.mpi_bcast(masterdir, li, mpi.MPI_CHAR,
Blockdata["main_node"], mpi.MPI_COMM_WORLD)
masterdir = b"".join(masterdir).decode('latin1')
Tracker["constants"]["masterdir"] = masterdir
log_main = sp_logger.Logger(sp_logger.BaseLogger_Files())
log_main.prefix = Tracker["constants"]["masterdir"] + "/"
while not os.path.exists(Tracker["constants"]["masterdir"]):
sp_global_def.sxprint(
"Node ",
Blockdata["myid"],
" waiting...",
Tracker["constants"]["masterdir"],
)
time.sleep(1)
mpi.mpi_barrier(mpi.MPI_COMM_WORLD)
if Blockdata["myid"] == Blockdata["main_node"]:
init_dict = {}
sp_global_def.sxprint(Tracker["constants"]["isac_dir"])
Tracker["directory"] = os.path.join(Tracker["constants"]["isac_dir"],
"2dalignment")
core = sp_utilities.read_text_row(
os.path.join(Tracker["directory"], "initial2Dparams.txt"))
for im in range(len(core)):
init_dict[im] = core[im]
del core
else:
init_dict = 0
init_dict = sp_utilities.wrap_mpi_bcast(init_dict,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
###
do_ctf = True
if options.noctf:
do_ctf = False
if Blockdata["myid"] == Blockdata["main_node"]:
if do_ctf:
sp_global_def.sxprint("CTF correction is on")
else:
sp_global_def.sxprint("CTF correction is off")
if options.local_alignment:
sp_global_def.sxprint("local refinement is on")
else:
sp_global_def.sxprint("local refinement is off")
if B_enhance:
sp_global_def.sxprint("Bfactor is to be applied on averages")
elif adjust_to_given_pw2:
sp_global_def.sxprint(
"PW of averages is adjusted to a given 1D PW curve")
elif adjust_to_analytic_model:
sp_global_def.sxprint(
"PW of averages is adjusted to analytical model")
else:
sp_global_def.sxprint("PW of averages is not adjusted")
# Tracker["constants"]["orgstack"] = "bdb:"+ os.path.join(Tracker["constants"]["isac_dir"],"../","sparx_stack")
image = sp_utilities.get_im(Tracker["constants"]["orgstack"], 0)
Tracker["constants"]["nnxo"] = image.get_xsize()
if Tracker["constants"]["pixel_size"] == -1.0:
sp_global_def.sxprint(
"Pixel size value is not provided by user. extracting it from ctf header entry of the original stack."
)
try:
ctf_params = image.get_attr("ctf")
Tracker["constants"]["pixel_size"] = ctf_params.apix
except:
sp_global_def.ERROR(
"Pixel size could not be extracted from the original stack.",
myid=Blockdata["myid"],
)
## Now fill in low-pass filter
isac_shrink_path = os.path.join(Tracker["constants"]["isac_dir"],
"README_shrink_ratio.txt")
if not os.path.exists(isac_shrink_path):
sp_global_def.ERROR(
"%s does not exist in the specified ISAC run output directory"
% (isac_shrink_path),
myid=Blockdata["myid"],
)
isac_shrink_file = open(isac_shrink_path, "r")
isac_shrink_lines = isac_shrink_file.readlines()
isac_shrink_ratio = float(
isac_shrink_lines[5]
) # 6th line: shrink ratio (= [target particle radius]/[particle radius]) used in the ISAC run
isac_radius = float(
isac_shrink_lines[6]
) # 7th line: particle radius at original pixel size used in the ISAC run
isac_shrink_file.close()
print("Extracted parameter values")
print("ISAC shrink ratio : {0}".format(isac_shrink_ratio))
print("ISAC particle radius : {0}".format(isac_radius))
Tracker["ini_shrink"] = isac_shrink_ratio
else:
Tracker["ini_shrink"] = 0.0
Tracker = sp_utilities.wrap_mpi_bcast(Tracker,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
# print(Tracker["constants"]["pixel_size"], "pixel_size")
x_range = max(
Tracker["constants"]["xrange"],
int(old_div(1.0, Tracker["ini_shrink"]) + 0.99999),
)
a_range = y_range = x_range
if Blockdata["myid"] == Blockdata["main_node"]:
parameters = sp_utilities.read_text_row(
os.path.join(Tracker["constants"]["isac_dir"],
"all_parameters.txt"))
else:
parameters = 0
parameters = sp_utilities.wrap_mpi_bcast(parameters,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
params_dict = {}
list_dict = {}
# parepare params_dict
# navg = min(Tracker["constants"]["navg"]*Blockdata["nproc"], EMUtil.get_image_count(os.path.join(Tracker["constants"]["isac_dir"], "class_averages.hdf")))
navg = min(
Tracker["constants"]["navg"],
EMAN2_cppwrap.EMUtil.get_image_count(
os.path.join(Tracker["constants"]["isac_dir"],
"class_averages.hdf")),
)
global_dict = {}
ptl_list = []
memlist = []
if Blockdata["myid"] == Blockdata["main_node"]:
sp_global_def.sxprint("Number of averages computed in this run is %d" %
navg)
for iavg in range(navg):
params_of_this_average = []
image = sp_utilities.get_im(
os.path.join(Tracker["constants"]["isac_dir"],
"class_averages.hdf"),
iavg,
)
members = sorted(image.get_attr("members"))
memlist.append(members)
for im in range(len(members)):
abs_id = members[im]
global_dict[abs_id] = [iavg, im]
P = sp_utilities.combine_params2(
init_dict[abs_id][0],
init_dict[abs_id][1],
init_dict[abs_id][2],
init_dict[abs_id][3],
parameters[abs_id][0],
old_div(parameters[abs_id][1], Tracker["ini_shrink"]),
old_div(parameters[abs_id][2], Tracker["ini_shrink"]),
parameters[abs_id][3],
)
if parameters[abs_id][3] == -1:
sp_global_def.sxprint(
"WARNING: Image #{0} is an unaccounted particle with invalid 2D alignment parameters and should not be the member of any classes. Please check the consitency of input dataset."
.format(abs_id)
) # How to check what is wrong about mirror = -1 (Toshio 2018/01/11)
params_of_this_average.append([P[0], P[1], P[2], P[3], 1.0])
ptl_list.append(abs_id)
params_dict[iavg] = params_of_this_average
list_dict[iavg] = members
sp_utilities.write_text_row(
params_of_this_average,
os.path.join(
Tracker["constants"]["masterdir"],
"params_avg",
"params_avg_%03d.txt" % iavg,
),
)
ptl_list.sort()
init_params = [None for im in range(len(ptl_list))]
for im in range(len(ptl_list)):
init_params[im] = [ptl_list[im]] + params_dict[global_dict[
ptl_list[im]][0]][global_dict[ptl_list[im]][1]]
sp_utilities.write_text_row(
init_params,
os.path.join(Tracker["constants"]["masterdir"],
"init_isac_params.txt"),
)
else:
params_dict = 0
list_dict = 0
memlist = 0
params_dict = sp_utilities.wrap_mpi_bcast(params_dict,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
list_dict = sp_utilities.wrap_mpi_bcast(list_dict,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
memlist = sp_utilities.wrap_mpi_bcast(memlist,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
# Now computing!
del init_dict
tag_sharpen_avg = 1000
## always apply low pass filter to B_enhanced images to suppress noise in high frequencies
enforced_to_H1 = False
if B_enhance:
if Tracker["constants"]["low_pass_filter"] == -1.0:
enforced_to_H1 = True
# distribute workload among mpi processes
image_start, image_end = sp_applications.MPI_start_end(
navg, Blockdata["nproc"], Blockdata["myid"])
if Blockdata["myid"] == Blockdata["main_node"]:
cpu_dict = {}
for iproc in range(Blockdata["nproc"]):
local_image_start, local_image_end = sp_applications.MPI_start_end(
navg, Blockdata["nproc"], iproc)
for im in range(local_image_start, local_image_end):
cpu_dict[im] = iproc
else:
cpu_dict = 0
cpu_dict = sp_utilities.wrap_mpi_bcast(cpu_dict,
Blockdata["main_node"],
communicator=mpi.MPI_COMM_WORLD)
slist = [None for im in range(navg)]
ini_list = [None for im in range(navg)]
avg1_list = [None for im in range(navg)]
avg2_list = [None for im in range(navg)]
data_list = [None for im in range(navg)]
plist_dict = {}
if Blockdata["myid"] == Blockdata["main_node"]:
if B_enhance:
sp_global_def.sxprint(
"Avg ID B-factor FH1(Res before ali) FH2(Res after ali)")
else:
sp_global_def.sxprint(
"Avg ID FH1(Res before ali) FH2(Res after ali)")
FH_list = [[0, 0.0, 0.0] for im in range(navg)]
for iavg in range(image_start, image_end):
mlist = EMAN2_cppwrap.EMData.read_images(
Tracker["constants"]["orgstack"], list_dict[iavg])
for im in range(len(mlist)):
sp_utilities.set_params2D(mlist[im],
params_dict[iavg][im],
xform="xform.align2d")
if options.local_alignment:
new_avg, plist, FH2 = sp_applications.refinement_2d_local(
mlist,
Tracker["constants"]["radius"],
a_range,
x_range,
y_range,
CTF=do_ctf,
SNR=1.0e10,
)
plist_dict[iavg] = plist
FH1 = -1.0
else:
new_avg, frc, plist = compute_average(
mlist, Tracker["constants"]["radius"], do_ctf)
FH1 = get_optimistic_res(frc)
FH2 = -1.0
FH_list[iavg] = [iavg, FH1, FH2]
if B_enhance:
new_avg, gb = apply_enhancement(
new_avg,
Tracker["constants"]["B_start"],
Tracker["constants"]["pixel_size"],
Tracker["constants"]["Bfactor"],
)
sp_global_def.sxprint(" %6d %6.3f %4.3f %4.3f" %
(iavg, gb, FH1, FH2))
elif adjust_to_given_pw2:
roo = sp_utilities.read_text_file(Tracker["constants"]["modelpw"],
-1)
roo = roo[0] # always on the first column
new_avg = adjust_pw_to_model(new_avg,
Tracker["constants"]["pixel_size"],
roo)
sp_global_def.sxprint(" %6d %4.3f %4.3f " %
(iavg, FH1, FH2))
elif adjust_to_analytic_model:
new_avg = adjust_pw_to_model(new_avg,
Tracker["constants"]["pixel_size"],
None)
sp_global_def.sxprint(" %6d %4.3f %4.3f " %
(iavg, FH1, FH2))
elif no_adjustment:
pass
if Tracker["constants"]["low_pass_filter"] != -1.0:
if Tracker["constants"]["low_pass_filter"] == 0.0:
low_pass_filter = FH1
elif Tracker["constants"]["low_pass_filter"] == 1.0:
low_pass_filter = FH2
if not options.local_alignment:
low_pass_filter = FH1
else:
low_pass_filter = Tracker["constants"]["low_pass_filter"]
if low_pass_filter >= 0.45:
low_pass_filter = 0.45
new_avg = sp_filter.filt_tanl(new_avg, low_pass_filter, 0.02)
else: # No low pass filter but if enforced
if enforced_to_H1:
new_avg = sp_filter.filt_tanl(new_avg, FH1, 0.02)
if B_enhance:
new_avg = sp_fundamentals.fft(new_avg)
new_avg.set_attr("members", list_dict[iavg])
new_avg.set_attr("n_objects", len(list_dict[iavg]))
slist[iavg] = new_avg
sp_global_def.sxprint(
time.strftime("%Y-%m-%d_%H:%M:%S", time.localtime()) + " =>",
"Refined average %7d" % iavg,
)
## send to main node to write
mpi.mpi_barrier(mpi.MPI_COMM_WORLD)
for im in range(navg):
# avg
if (cpu_dict[im] == Blockdata["myid"]
and Blockdata["myid"] != Blockdata["main_node"]):
sp_utilities.send_EMData(slist[im], Blockdata["main_node"],
tag_sharpen_avg)
elif (cpu_dict[im] == Blockdata["myid"]
and Blockdata["myid"] == Blockdata["main_node"]):
slist[im].set_attr("members", memlist[im])
slist[im].set_attr("n_objects", len(memlist[im]))
slist[im].write_image(
os.path.join(Tracker["constants"]["masterdir"],
"class_averages.hdf"),
im,
)
elif (cpu_dict[im] != Blockdata["myid"]
and Blockdata["myid"] == Blockdata["main_node"]):
new_avg_other_cpu = sp_utilities.recv_EMData(
cpu_dict[im], tag_sharpen_avg)
new_avg_other_cpu.set_attr("members", memlist[im])
new_avg_other_cpu.set_attr("n_objects", len(memlist[im]))
new_avg_other_cpu.write_image(
os.path.join(Tracker["constants"]["masterdir"],
"class_averages.hdf"),
im,
)
if options.local_alignment:
if cpu_dict[im] == Blockdata["myid"]:
sp_utilities.write_text_row(
plist_dict[im],
os.path.join(
Tracker["constants"]["masterdir"],
"ali2d_local_params_avg",
"ali2d_local_params_avg_%03d.txt" % im,
),
)
if (cpu_dict[im] == Blockdata["myid"]
and cpu_dict[im] != Blockdata["main_node"]):
sp_utilities.wrap_mpi_send(plist_dict[im],
Blockdata["main_node"],
mpi.MPI_COMM_WORLD)
sp_utilities.wrap_mpi_send(FH_list, Blockdata["main_node"],
mpi.MPI_COMM_WORLD)
elif (cpu_dict[im] != Blockdata["main_node"]
and Blockdata["myid"] == Blockdata["main_node"]):
dummy = sp_utilities.wrap_mpi_recv(cpu_dict[im],
mpi.MPI_COMM_WORLD)
plist_dict[im] = dummy
dummy = sp_utilities.wrap_mpi_recv(cpu_dict[im],
mpi.MPI_COMM_WORLD)
FH_list[im] = dummy[im]
else:
if (cpu_dict[im] == Blockdata["myid"]
and cpu_dict[im] != Blockdata["main_node"]):
sp_utilities.wrap_mpi_send(FH_list, Blockdata["main_node"],
mpi.MPI_COMM_WORLD)
elif (cpu_dict[im] != Blockdata["main_node"]
and Blockdata["myid"] == Blockdata["main_node"]):
dummy = sp_utilities.wrap_mpi_recv(cpu_dict[im],
mpi.MPI_COMM_WORLD)
FH_list[im] = dummy[im]
mpi.mpi_barrier(mpi.MPI_COMM_WORLD)
mpi.mpi_barrier(mpi.MPI_COMM_WORLD)
if options.local_alignment:
if Blockdata["myid"] == Blockdata["main_node"]:
ali3d_local_params = [None for im in range(len(ptl_list))]
for im in range(len(ptl_list)):
ali3d_local_params[im] = [ptl_list[im]] + plist_dict[
global_dict[ptl_list[im]][0]][global_dict[ptl_list[im]][1]]
sp_utilities.write_text_row(
ali3d_local_params,
os.path.join(Tracker["constants"]["masterdir"],
"ali2d_local_params.txt"),
)
sp_utilities.write_text_row(
FH_list,
os.path.join(Tracker["constants"]["masterdir"], "FH_list.txt"))
else:
if Blockdata["myid"] == Blockdata["main_node"]:
sp_utilities.write_text_row(
FH_list,
os.path.join(Tracker["constants"]["masterdir"], "FH_list.txt"))
mpi.mpi_barrier(mpi.MPI_COMM_WORLD)
target_xr = 3
target_yr = 3
if Blockdata["myid"] == 0:
cmd = "{} {} {} {} {} {} {} {} {} {}".format(
"sp_chains.py",
os.path.join(Tracker["constants"]["masterdir"],
"class_averages.hdf"),
os.path.join(Tracker["constants"]["masterdir"], "junk.hdf"),
os.path.join(Tracker["constants"]["masterdir"],
"ordered_class_averages.hdf"),
"--circular",
"--radius=%d" % Tracker["constants"]["radius"],
"--xr=%d" % (target_xr + 1),
"--yr=%d" % (target_yr + 1),
"--align",
">/dev/null",
)
junk = sp_utilities.cmdexecute(cmd)
cmd = "{} {}".format(
"rm -rf",
os.path.join(Tracker["constants"]["masterdir"], "junk.hdf"))
junk = sp_utilities.cmdexecute(cmd)
return
def combine_isac_params(isac_dir,
classavgstack,
chains_params_file,
old_combined_parts,
classdoc,
combined_params_file,
log=False,
verbose=False):
"""
Combines initial and all_params from ISAC.
Arguments:
isac_dir : ISAC directory
classavgstack : Input image stack
chains_params_file : Input alignment parameters applied to averages in sp_chains
old_combined_parts
classdoc
combined_params_file : Output combined alignment parameters
log : instance of Logger class
verbose : (boolean) Whether to write to screen
"""
from sp_utilities import combine_params2, read_text_row
# File-handling
init_params_file = os.path.join(isac_dir, "2dalignment",
"initial2Dparams.txt")
all_params_file = os.path.join(isac_dir, "all_parameters.txt")
init_params_list = read_text_row(init_params_file)
all_params = read_text_row(all_params_file)
isac_shrink_path = os.path.join(isac_dir, "README_shrink_ratio.txt")
isac_shrink_file = open(isac_shrink_path, "r")
isac_shrink_lines = isac_shrink_file.readlines()
isac_shrink_ratio = float(isac_shrink_lines[5])
"""
Three cases:
1) Using class_averages.hdf
2) Using ordered_class_averages.hdf, but chains_params.txt doesn't exist
3) Using ordered_class_averages.hdf and chains_params.txt
"""
msg = "Combining alignment parameters from %s and %s, dividing by %s, and writing to %s" % \
(init_params_file, all_params_file, isac_shrink_ratio, combined_params_file)
# Check if using ordered class averages and whether chains_params exists
if os.path.basename(classavgstack) == 'ordered_class_averages.hdf':
if not os.path.exists(chains_params_file):
msg += "WARNING: '%s' does not exist. " % chains_params_file
msg += " Using '%s' but alignment parameters correspond to 'class_averages.hdf'.\n" % classavgstack
else:
msg = "Combining alignment parameters from %s, %s, and %s, dividing by %s, and writing to %s" % \
(init_params_file, all_params_file, chains_params_file, isac_shrink_ratio, combined_params_file)
print_log_msg(msg, log, verbose)
if os.path.basename(
classavgstack) == 'ordered_class_averages.hdf' and os.path.exists(
chains_params_file):
chains_params_list = read_text_row(chains_params_file)
old_combined_list = read_text_row(old_combined_parts)
num_classes = EMUtil.get_image_count(classavgstack)
tmp_combined = []
# Loop through classes
for class_num in range(num_classes):
# Extract members
image = get_im(classavgstack, class_num)
members = sorted(image.get_attr("members"))
old_class_list = read_text_row(classdoc.format(class_num))
new_class_list = []
# Loop through particles
for idx, im in enumerate(members):
tmp_par = combine_params2(
init_params_list[im][0], init_params_list[im][1],
init_params_list[im][2], init_params_list[im][3],
all_params[im][0], all_params[im][1] / isac_shrink_ratio,
all_params[im][2] / isac_shrink_ratio, all_params[im][3])
# Combine with class-average parameters
P = combine_params2(tmp_par[0], tmp_par[1], tmp_par[2],
tmp_par[3],
chains_params_list[class_num][2],
chains_params_list[class_num][3],
chains_params_list[class_num][4],
chains_params_list[class_num][5])
tmp_combined.append([im, P[0], P[1], P[2], P[3]])
# Need to update class number in class docs
old_part_num = old_class_list[idx]
try:
new_part_num = old_combined_list.index(old_part_num)
except ValueError:
print(
"Couldn't find particle: class_num %s, old_part_num %s, new_part_num %s"
% (class_num, old_part_num[0], new_part_num))
new_class_list.append(new_part_num)
# End particle-loop
# Overwrite pre-existing class doc
write_text_row(new_class_list, classdoc.format(class_num))
# End class-loop
# Sort by particle number
combined_params = sorted(tmp_combined, key=itemgetter(0))
# Remove first column
for row in combined_params:
del row[0]
# Not applying alignments of ordered_class_averages
else:
combined_params = []
# Loop through images
for im in range(len(all_params)):
P = combine_params2(
init_params_list[im][0], init_params_list[im][1],
init_params_list[im][2], init_params_list[im][3],
all_params[im][0], all_params[im][1] / isac_shrink_ratio,
all_params[im][2] / isac_shrink_ratio, all_params[im][3])
combined_params.append([P[0], P[1], P[2], P[3], 1.0])
write_text_row(combined_params, combined_params_file)
print_log_msg(
'Wrote %s entries to %s\n' %
(len(combined_params), combined_params_file), log, verbose)
return combined_params
def main():
progname = os.path.basename(sys.argv[0])
usage = progname + """ [options] <inputfile> <outputfile>
Forms chains of 2D images based on their similarities.
Functionality:
Order a 2-D stack of image based on pair-wise similarity (computed as a cross-correlation coefficent).
Options 1-3 require image stack to be aligned. The program will apply orientation parameters if present in headers.
The ways to use the program:
1. Use option initial to specify which image will be used as an initial seed to form the chain.
sp_chains.py input_stack.hdf output_stack.hdf --initial=23 --radius=25
2. If options initial is omitted, the program will determine which image best serves as initial seed to form the chain
sp_chains.py input_stack.hdf output_stack.hdf --radius=25
3. Use option circular to form a circular chain.
sp_chains.py input_stack.hdf output_stack.hdf --circular--radius=25
4. New circular code based on pairwise alignments
sp_chains.py aclf.hdf chain.hdf circle.hdf --align --radius=25 --xr=2 --pairwiseccc=lcc.txt
5. Circular ordering based on pairwise alignments
sp_chains.py vols.hdf chain.hdf mask.hdf --dd --radius=25
"""
parser = OptionParser(usage, version=SPARXVERSION)
parser.add_option(
"--dd",
action="store_true",
help="Circular ordering without adjustment of orientations",
default=False)
parser.add_option(
"--circular",
action="store_true",
help=
"Select circular ordering (first image has to be similar to the last)",
default=False)
parser.add_option(
"--align",
action="store_true",
help=
"Compute all pairwise alignments and from the table of image similarities find the best chain",
default=False)
parser.add_option(
"--initial",
type="int",
default=-1,
help=
"Specifies which image will be used as an initial seed to form the chain. (default = 0, means the first image)"
)
parser.add_option(
"--radius",
type="int",
default=-1,
help="Radius of a circular mask for similarity based ordering")
# import params for 2D alignment
parser.add_option(
"--ou",
type="int",
default=-1,
help=
"outer radius for 2D alignment < nx/2-1 (set to the radius of the particle)"
)
parser.add_option(
"--xr",
type="int",
default=0,
help="range for translation search in x direction, search is +/xr (0)")
parser.add_option(
"--yr",
type="int",
default=0,
help="range for translation search in y direction, search is +/yr (0)")
# parser.add_option("--nomirror", action="store_true", default=False, help="Disable checking mirror orientations of images (default False)")
parser.add_option("--pairwiseccc",
type="string",
default=" ",
help="Input/output pairwise ccc file")
(options, args) = parser.parse_args()
sp_global_def.BATCH = True
if options.dd:
nargs = len(args)
if nargs != 3:
ERROR("Must provide name of input and two output files!")
return
stack = args[0]
new_stack = args[1]
from sp_utilities import model_circle
from sp_statistics import ccc
from sp_statistics import mono
lend = EMUtil.get_image_count(stack)
lccc = [None] * (old_div(lend * (lend - 1), 2))
for i in range(lend - 1):
v1 = get_im(stack, i)
if (i == 0 and nargs == 2):
nx = v1.get_xsize()
ny = v1.get_ysize()
nz = v1.get_ysize()
if options.ou < 1:
radius = old_div(nx, 2) - 2
else:
radius = options.ou
mask = model_circle(radius, nx, ny, nz)
else:
mask = get_im(args[2])
for j in range(i + 1, lend):
lccc[mono(i, j)] = [ccc(v1, get_im(stack, j), mask), 0]
order = tsp(lccc)
if (len(order) != lend):
ERROR("Problem with data length")
return
sxprint("Total sum of cccs :", TotalDistance(order, lccc))
sxprint("ordering :", order)
for i in range(lend):
get_im(stack, order[i]).write_image(new_stack, i)
elif options.align:
nargs = len(args)
if nargs != 3:
ERROR("Must provide name of input and two output files!")
return
from sp_utilities import get_params2D, model_circle
from sp_fundamentals import rot_shift2D
from sp_statistics import ccc
from time import time
from sp_alignment import align2d, align2d_scf
stack = args[0]
new_stack = args[1]
d = EMData.read_images(stack)
if (len(d) < 6):
ERROR(
"Chains requires at least six images in the input stack to be executed"
)
return
"""
# will align anyway
try:
ttt = d[0].get_attr('xform.params2d')
for i in xrange(len(d)):
alpha, sx, sy, mirror, scale = get_params2D(d[i])
d[i] = rot_shift2D(d[i], alpha, sx, sy, mirror)
except:
pass
"""
nx = d[0].get_xsize()
ny = d[0].get_ysize()
if options.ou < 1:
radius = old_div(nx, 2) - 2
else:
radius = options.ou
mask = model_circle(radius, nx, ny)
if (options.xr < 0):
xrng = 0
else:
xrng = options.xr
if (options.yr < 0):
yrng = xrng
else:
yrng = options.yr
initial = max(options.initial, 0)
from sp_statistics import mono
lend = len(d)
lccc = [None] * (old_div(lend * (lend - 1), 2))
from sp_utilities import read_text_row
if options.pairwiseccc == " " or not os.path.exists(
options.pairwiseccc):
st = time()
for i in range(lend - 1):
for j in range(i + 1, lend):
# j>i meaning mono entry (i,j) or (j,i) indicates T i->j (from smaller index to larger)
# alpha, sx, sy, mir, peak = align2d(d[i],d[j], xrng, yrng, step=options.ts, first_ring=options.ir, last_ring=radius, mode = "F")
alpha, sx, sy, mir, peak = align2d_scf(d[i],
d[j],
xrng,
yrng,
ou=radius)
lccc[mono(i, j)] = [
ccc(d[j], rot_shift2D(d[i], alpha, sx, sy, mir, 1.0),
mask), alpha, sx, sy, mir
]
# print " %4d %10.1f"%(i,time()-st)
if ((not os.path.exists(options.pairwiseccc))
and (options.pairwiseccc != " ")):
write_text_row([[initial, 0, 0, 0, 0]] + lccc,
options.pairwiseccc)
elif (os.path.exists(options.pairwiseccc)):
lccc = read_text_row(options.pairwiseccc)
initial = int(lccc[0][0] + 0.1)
del lccc[0]
for i in range(len(lccc)):
T = Transform({
"type": "2D",
"alpha": lccc[i][1],
"tx": lccc[i][2],
"ty": lccc[i][3],
"mirror": int(lccc[i][4] + 0.1)
})
lccc[i] = [lccc[i][0], T]
tdummy = Transform({"type": "2D"})
maxsum = -1.023
for m in range(0, lend): # initial, initial+1):
indc = list(range(lend))
lsnake = [[m, tdummy, 0.0]]
del indc[m]
lsum = 0.0
while len(indc) > 1:
maxcit = -111.
for i in range(len(indc)):
cuc = lccc[mono(indc[i], lsnake[-1][0])][0]
if cuc > maxcit:
maxcit = cuc
qi = indc[i]
# Here we need transformation from the current to the previous,
# meaning indc[i] -> lsnake[-1][0]
T = lccc[mono(indc[i], lsnake[-1][0])][1]
# If direction is from larger to smaller index, the transformation has to be inverted
if (indc[i] > lsnake[-1][0]): T = T.inverse()
lsnake.append([qi, T, maxcit])
lsum += maxcit
del indc[indc.index(qi)]
T = lccc[mono(indc[-1], lsnake[-1][0])][1]
if (indc[-1] > lsnake[-1][0]): T = T.inverse()
lsnake.append(
[indc[-1], T, lccc[mono(indc[-1], lsnake[-1][0])][0]])
sxprint(" initial image and lsum ", m, lsum)
# print lsnake
if (lsum > maxsum):
maxsum = lsum
init = m
snake = [lsnake[i] for i in range(lend)]
sxprint(" Initial image selected : ", init, maxsum, " ",
TotalDistance([snake[m][0] for m in range(lend)], lccc))
# for q in snake: print q
from copy import deepcopy
trans = deepcopy([snake[i][1] for i in range(len(snake))])
sxprint([snake[i][0] for i in range(len(snake))])
"""
for m in xrange(lend):
prms = trans[m].get_params("2D")
print " %3d %7.1f %7.1f %7.1f %2d %6.2f"%(snake[m][0], prms["alpha"], prms["tx"], prms["ty"], prms["mirror"], snake[m][2])
"""
for k in range(lend - 2, 0, -1):
T = snake[k][1]
for i in range(k + 1, lend):
trans[i] = T * trans[i]
# To add - apply all transformations and do the overall centering.
for m in range(lend):
prms = trans[m].get_params("2D")
# print(" %3d %7.1f %7.1f %7.1f %2d %6.2f"%(snake[m][0], prms["alpha"], prms["tx"], prms["ty"], prms["mirror"], snake[m][2]) )
# rot_shift2D(d[snake[m][0]], prms["alpha"], prms["tx"], prms["ty"], prms["mirror"]).write_image(new_stack, m)
rot_shift2D(d[snake[m][0]], prms["alpha"], 0.0, 0.0,
prms["mirror"]).write_image(new_stack, m)
order = tsp(lccc)
if (len(order) != lend):
ERROR("Problem with data length")
return
sxprint(TotalDistance(order, lccc))
sxprint(order)
ibeg = order.index(init)
order = [order[(i + ibeg) % lend] for i in range(lend)]
sxprint(TotalDistance(order, lccc))
sxprint(order)
snake = [tdummy]
for i in range(1, lend):
# Here we need transformation from the current to the previous,
# meaning order[i] -> order[i-1]]
T = lccc[mono(order[i], order[i - 1])][1]
# If direction is from larger to smaller index, the transformation has to be inverted
if (order[i] > order[i - 1]): T = T.inverse()
snake.append(T)
assert (len(snake) == lend)
from copy import deepcopy
trans = deepcopy(snake)
for k in range(lend - 2, 0, -1):
T = snake[k]
for i in range(k + 1, lend):
trans[i] = T * trans[i]
# Try to smooth the angles - complicated, I am afraid one would have to use angles forward and backwards
# and find their average??
# In addition, one would have to recenter them
"""
trms = []
for m in xrange(lend):
prms = trans[m].get_params("2D")
trms.append([prms["alpha"], prms["mirror"]])
for i in xrange(3):
for m in xrange(lend):
mb = (m-1)%lend
me = (m+1)%lend
# angles order mb,m,me
# calculate predicted angles mb->m
"""
best_params = []
for m in range(lend):
prms = trans[m].get_params("2D")
# rot_shift2D(d[order[m]], prms["alpha"], prms["tx"], prms["ty"], prms["mirror"]).write_image("metro.hdf", m)
rot_shift2D(d[order[m]], prms["alpha"], 0.0, 0.0,
prms["mirror"]).write_image(args[2], m)
best_params.append(
[m, order[m], prms["alpha"], 0.0, 0.0, prms["mirror"]])
# Write alignment parameters
outdir = os.path.dirname(args[2])
aligndoc = os.path.join(outdir, "chains_params.txt")
write_text_row(best_params, aligndoc)
"""
# This was an effort to get number of loops, inconclusive, to say the least
from numpy import outer, zeros, float32, sqrt
lend = len(d)
cor = zeros(lend,float32)
cor = outer(cor, cor)
for i in xrange(lend): cor[i][i] = 1.0
for i in xrange(lend-1):
for j in xrange(i+1, lend):
cor[i,j] = lccc[mono(i,j)][0]
cor[j,i] = cor[i,j]
lmbd, eigvec = pca(cor)
from sp_utilities import write_text_file
nvec=20
print [lmbd[j] for j in xrange(nvec)]
print " G"
mm = [-1]*lend
for i in xrange(lend): # row
mi = -1.0e23
for j in xrange(nvec):
qt = eigvec[j][i]
if(abs(qt)>mi):
mi = abs(qt)
mm[i] = j
for j in xrange(nvec):
qt = eigvec[j][i]
print round(qt,3), # eigenvector
print mm[i]
print
for j in xrange(nvec):
qt = []
for i in xrange(lend):
if(mm[i] == j): qt.append(i)
if(len(qt)>0): write_text_file(qt,"loop%02d.txt"%j)
"""
"""
print [lmbd[j] for j in xrange(nvec)]
print " B"
mm = [-1]*lend
for i in xrange(lend): # row
mi = -1.0e23
for j in xrange(nvec):
qt = eigvec[j][i]/sqrt(lmbd[j])
if(abs(qt)>mi):
mi = abs(qt)
mm[i] = j
for j in xrange(nvec):
qt = eigvec[j][i]/sqrt(lmbd[j])
print round(qt,3), # eigenvector
print mm[i]
print
"""
"""
lend=3
cor = zeros(lend,float32)
cor = outer(cor, cor)
cor[0][0] =136.77
cor[0][1] = 79.15
cor[0][2] = 37.13
cor[1][0] = 79.15
cor[2][0] = 37.13
cor[1][1] = 50.04
cor[1][2] = 21.65
cor[2][1] = 21.65
cor[2][2] = 13.26
lmbd, eigvec = pca(cor)
print lmbd
print eigvec
for i in xrange(lend): # row
for j in xrange(lend): print eigvec[j][i], # eigenvector
print
print " B"
for i in xrange(lend): # row
for j in xrange(lend): print eigvec[j][i]/sqrt(lmbd[j]), # eigenvector
print
print " G"
for i in xrange(lend): # row
for j in xrange(lend): print eigvec[j][i]*sqrt(lmbd[j]), # eigenvector
print
"""
else:
nargs = len(args)
if nargs != 2:
ERROR("Must provide name of input and output file!")
return
from sp_utilities import get_params2D, model_circle
from sp_fundamentals import rot_shift2D
from sp_statistics import ccc
from time import time
from sp_alignment import align2d
stack = args[0]
new_stack = args[1]
d = EMData.read_images(stack)
try:
sxprint("Using 2D alignment parameters from header.")
ttt = d[0].get_attr('xform.params2d')
for i in range(len(d)):
alpha, sx, sy, mirror, scale = get_params2D(d[i])
d[i] = rot_shift2D(d[i], alpha, sx, sy, mirror)
except:
pass
nx = d[0].get_xsize()
ny = d[0].get_ysize()
if options.radius < 1:
radius = old_div(nx, 2) - 2
else:
radius = options.radius
mask = model_circle(radius, nx, ny)
init = options.initial
if init > -1:
sxprint(" initial image: %d" % init)
temp = d[init].copy()
temp.write_image(new_stack, 0)
del d[init]
k = 1
lsum = 0.0
while len(d) > 1:
maxcit = -111.
for i in range(len(d)):
cuc = ccc(d[i], temp, mask)
if cuc > maxcit:
maxcit = cuc
qi = i
# sxprint k, maxcit
lsum += maxcit
temp = d[qi].copy()
del d[qi]
temp.write_image(new_stack, k)
k += 1
sxprint(lsum)
d[0].write_image(new_stack, k)
else:
if options.circular:
sxprint("Using options.circular, no alignment")
# figure the "best circular" starting image
maxsum = -1.023
for m in range(len(d)):
indc = list(range(len(d)))
lsnake = [-1] * (len(d) + 1)
lsnake[0] = m
lsnake[-1] = m
del indc[m]
temp = d[m].copy()
lsum = 0.0
direction = +1
k = 1
while len(indc) > 1:
maxcit = -111.
for i in range(len(indc)):
cuc = ccc(d[indc[i]], temp, mask)
if cuc > maxcit:
maxcit = cuc
qi = indc[i]
lsnake[k] = qi
lsum += maxcit
del indc[indc.index(qi)]
direction = -direction
for i in range(1, len(d)):
if (direction > 0):
if (lsnake[i] == -1):
temp = d[lsnake[i - 1]].copy()
# print " forw ",lsnake[i-1]
k = i
break
else:
if (lsnake[len(d) - i] == -1):
temp = d[lsnake[len(d) - i + 1]].copy()
# print " back ",lsnake[len(d) - i +1]
k = len(d) - i
break
lsnake[lsnake.index(-1)] = indc[-1]
# print " initial image and lsum ",m,lsum
# print lsnake
if (lsum > maxsum):
maxsum = lsum
init = m
snake = [lsnake[i] for i in range(len(d))]
sxprint(" Initial image selected : ", init, maxsum)
sxprint(lsnake)
for m in range(len(d)):
d[snake[m]].write_image(new_stack, m)
else:
# figure the "best" starting image
sxprint("Straight chain, no alignment")
maxsum = -1.023
for m in range(len(d)):
indc = list(range(len(d)))
lsnake = [m]
del indc[m]
temp = d[m].copy()
lsum = 0.0
while len(indc) > 1:
maxcit = -111.
for i in range(len(indc)):
cuc = ccc(d[indc[i]], temp, mask)
if cuc > maxcit:
maxcit = cuc
qi = indc[i]
lsnake.append(qi)
lsum += maxcit
temp = d[qi].copy()
del indc[indc.index(qi)]
lsnake.append(indc[-1])
# sxprint " initial image and lsum ",m,lsum
# sxprint lsnake
if (lsum > maxsum):
maxsum = lsum
init = m
snake = [lsnake[i] for i in range(len(d))]
sxprint(" Initial image selected : ", init, maxsum)
sxprint(lsnake)
for m in range(len(d)):
d[snake[m]].write_image(new_stack, m)
