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  • Finding Extracted Features data for a known volume ID
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The filepath to sync Extracted Features files through RSync follows a pairtree format, keeping the institutional shortcode intact (e.g. mpd, uc2).

 Converting ID to RSync URL (Python with HTRC Feature Reader library)

If you are the HTRC Feature Reader library, there is a convenience function in htrc_features.utils.id_to_rsync(htid):

>> from htrc_features import utils
>> utils.id_to_rsync('miun.adx6300.0001.001')

Converting ID to RSync URL (Python)

This example is a simplified part of a longer notebook, which further describes how to collect and download large lists of volumes: ID to EF Rsync Link.ipynb

If you don't have it, you may have to install the pairtree library with:  pip install pairtree (Python 2.x only).

import os
from pairtree import id2path, id_encode
def id_to_rsync(htid):
	Take an HTRC id and convert it to an Rsync location for syncing Extracted Features
    libid, volid = htid.split('.', 1)
    volid_clean = id_encode(volid)
    filename = '.'.join([libid, volid_clean, kind, 'json.bz2'])
    path = '/'.join([kind, libid, 'pairtree_root', id2path(volid).replace('\\', '/'), volid_clean, filename])
    return path



The Extracted Features for this volume can be downloaded using RSync:

rsync -azv{{URL}} .
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