#Copyright (c) 2013,Vienna University of Technology, Department of Geodesy and Geoinformation
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#modification, are permitted provided that the following conditions are met:
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# documentation and/or other materials provided with the distribution.
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# names of its contributors may be used to endorse or promote products
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#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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'''
Created on Aug 1, 2013
@author: Christoph Paulik christoph.paulik@geo.tuwien.ac.at
'''
import os
import readers
import numpy as np
[docs]def collect_from_folder(rootdir):
"""
function walks the rootdir directory and looks for network
folders and ISMN datafiles. It collects metadata for every
file found and returns a numpy.ndarray of metadata
Parameters
----------
rootdir : string
root directory on filesystem where the ISMN data was unzipped to
Returns
-------
metadata : numpy.ndarray
structured numpy array which contains the metadata for one file per row
"""
metadata_catalog=[]
for root, subFolders, files in os.walk(rootdir):
#print root,subFolders,files
for filename in files:
fullfilename = os.path.join(root,filename)
try:
metadata = readers.get_metadata(fullfilename)
except (readers.ReaderException,IOError) as e:
continue
for i, variable in enumerate(metadata['variable']):
metadata_catalog.append((metadata['network'],metadata['station'],
variable,metadata['depth_from'][i],metadata['depth_to'][i],
metadata['sensor'],metadata['longitude'],metadata['latitude'],
metadata['elevation'],fullfilename))
return np.array(metadata_catalog,dtype=np.dtype([('network',object),('station',object),('variable',object),
('depth_from',np.float),('depth_to',np.float),
('sensor',object),('longitude',np.float),('latitude',np.float),
('elevation',np.float),('filename',object)]))