def encode_path_from_geo_chrono(self,
lat,
lon,
latest_bce_ce,
earliest_bce_ce,
chrono_prefix=''):
""" encodes an event path from numeric lat, lon, and date values """
gm = GlobalMercator()
geo_path = gm.lat_lon_to_quadtree(lat, lon)
ch = ChronoTile()
chrono_path = ch.encode_path_from_bce_ce(latest_bce_ce, earliest_bce_ce, chrono_prefix)
return self.encode_path_from_geo_chrono_paths(geo_path, chrono_path)
def encode_path_from_geo_chrono(self,
lat,
lon,
latest_bce_ce,
earliest_bce_ce,
chrono_prefix=''):
""" encodes an event path from numeric lat, lon, and date values """
gm = GlobalMercator()
geo_path = gm.lat_lon_to_quadtree(lat, lon)
ch = ChronoTile()
chrono_path = ch.encode_path_from_bce_ce(latest_bce_ce,
earliest_bce_ce,
chrono_prefix)
return self.encode_path_from_geo_chrono_paths(geo_path, chrono_path)
def _process_chrono(self):
""" Finds chronological / date ranges in GeoJSON features for indexing.
More than 1 date range per item is OK.
"""
self.chrono_specified = False
if 'features' in self.oc_item.json_ld:
for feature in self.oc_item.json_ld['features']:
bad_time = False
try:
# time is in ISO 8601 time
iso_start = feature['when']['start']
except KeyError:
bad_time = True
try:
# time is in ISO 8601 time
iso_stop = feature['when']['stop']
except KeyError:
bad_time = True
try:
when_type = feature['when']['type']
except KeyError:
when_type = False
try:
ref_type = feature['when']['reference-type']
if ref_type == 'specified':
self.chrono_specified = True
except KeyError:
ref_type = False
if when_type == 'oc-gen:formation-use-life' \
and bad_time is False:
# convert GeoJSON-LD ISO 8601 to numeric
start = ISOyears().make_float_from_iso(iso_start)
stop = ISOyears().make_float_from_iso(iso_stop)
chrono_tile = ChronoTile()
if 'form_use_life_chrono_tile' not in self.fields:
self.fields['form_use_life_chrono_tile'] = []
if 'form_use_life_chrono_earliest' not in self.fields:
self.fields['form_use_life_chrono_earliest'] = []
if 'form_use_life_chrono_latest' not in self.fields:
self.fields['form_use_life_chrono_latest'] = []
self.fields['form_use_life_chrono_tile'].append(
chrono_tile.encode_path_from_bce_ce(
start, stop, '10M-'
)
)
self.fields['form_use_life_chrono_earliest'].append(start)
self.fields['form_use_life_chrono_latest'].append(stop)
def _process_chrono(self):
""" Finds chronological / date ranges in GeoJSON features for indexing.
More than 1 date range per item is OK.
"""
self.chrono_specified = False
if "features" in self.oc_item.json_ld:
for feature in self.oc_item.json_ld["features"]:
bad_time = False
try:
# time is in ISO 8601 time
iso_start = feature["when"]["start"]
except KeyError:
bad_time = True
try:
# time is in ISO 8601 time
iso_stop = feature["when"]["stop"]
except KeyError:
bad_time = True
try:
when_type = feature["when"]["type"]
except KeyError:
when_type = False
try:
ref_type = feature["when"]["reference-type"]
if ref_type == "specified":
self.chrono_specified = True
except KeyError:
ref_type = False
if when_type == "oc-gen:formation-use-life" and bad_time is False:
# convert GeoJSON-LD ISO 8601 to numeric
start = ISOyears().make_float_from_iso(iso_start)
stop = ISOyears().make_float_from_iso(iso_stop)
chrono_tile = ChronoTile()
if "form_use_life_chrono_tile" not in self.fields:
self.fields["form_use_life_chrono_tile"] = []
if "form_use_life_chrono_earliest" not in self.fields:
self.fields["form_use_life_chrono_earliest"] = []
if "form_use_life_chrono_latest" not in self.fields:
self.fields["form_use_life_chrono_latest"] = []
self.fields["form_use_life_chrono_tile"].append(
chrono_tile.encode_path_from_bce_ce(start, stop, "10M-")
)
self.fields["form_use_life_chrono_earliest"].append(start)
self.fields["form_use_life_chrono_latest"].append(stop)
