subtom_parallel_prealign

Prealigns particles to speed up CC-Matrix calculation.

subtom_parallel_prealign(
    'all_motl_fn_prefix', all_motl_fn_prefix ('combinedmotl/allmotl'),
    'ptcl_fn_prefix', ptcl_fn_prefix ('subtomograms/subtomo'),
    'prealign_fn_prefix', prealign_fn_prefix ('subtomograms/subtomo'),
    'iteration', iteration (1),
    'num_prealign_batch', num_prealign_batch (1),
    'process_idx', process_idx (1))

Prerotates and translates particles into alignment as precalculation on disk to speed up the calculation of the constrained cross-correlation matrix. The alignments are given in the motive list specified by all_motl_fn_prefix and iteration, and the particles are based on ptcl_fn_prefix and # where # is described in row 4 of the motive list. Pre-aligned particles will be written out described by prealign_fn_prefix, iteration and #. The process is designed to be run in parallel on a cluster. The particles will be processed in num_prealign_batch chunks, with the specific chunk being processed described by process_idx.

Example

subtom_parallel_prealign(
    'all_motl_fn_prefix', 'combinedmotl/allmotl', ...
    'ptcl_fn_prefix', 'subtomograms/subtomo', ...
    'prealign_fn_prefix', 'subtomograms/subtomo_ali', ...
    'iteration', 1, ...
    'num_prealign_batch', 100, ...
    'process_idx', 1)

See Also