У меня есть файл json, который содержит тысячи функций многоугольника. Каждая строка содержит один многоугольник. Мой скрипт объединяет все многоугольники и возвращает один многополигонный файл геойсона. Мой последний скрипт должен зацикливаться на 50 строк (многоугольников) в файле json, объединять эти 50 и сохранять каждый раз в один многогранный файл geojson в конце. Я пока не знаю, как реализовать этот цикл в моем скрипте.
Строка 1-50 в файле json = Первый геойсон;
Строка 51-101 в файле json = Второй геойсон;
Строка 102-152 в файле json = Третий геойсон
Спасибо!
часть JSON:
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Один результат геойсон:
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[-3.73153543285345, 48.1857787540888], [-3.73146986994153, 48.1859029445122], [-3.73133097547452, 48.1861650443673], [-3.731218747863, 48.1861318393685], [-3.73110101446164, 48.1860967634318], [-3.73086249049958, 48.1860144137328], [-3.73036740078679, 48.1858430405827], [-3.72987817474263, 48.1857080225914], [-3.72983231027187, 48.1856953176834], [-3.72983713797708, 48.1856818388616], [-3.72985491541579, 48.1856335741382], [-3.72985574749816, 48.1856323706591], [-3.72994330019466, 48.1855728767933], [-3.72990657950362, 48.1855590173522], [-3.7299972579383, 48.1850926252626], [-3.72891337358976, 48.1846911143134], [-3.72855457344473, 48.1845582044569], [-3.72857012615032, 48.1845363917365], [-3.7288638068384, 48.1841308675118], [-3.72895166222348, 48.1840804148277], [-3.72959269863475, 48.1837130041969], [-3.72965210706062, 48.1836983396247], [-3.72968210791325, 48.18370157447], [-3.72973229135383, 48.1837074039926], [-3.72997346944721, 48.1837486852237], [-3.730297600631, 48.1837866621361], [-3.73049523054776, 48.1837977300575], [-3.73058478215378, 48.1838028449738], [-3.7305853440734, 48.1838028038347], [-3.73118401428959, 48.1837563211525], [-3.73120459118999, 48.1837567166324], [-3.73147592453808, 48.1837621622482], [-3.73173389090255, 48.1837790365628], [-3.73204497102696, 48.1837996207504], [-3.73251671430452, 48.183829949838], [-3.73270215026346, 48.1838359403728], [-3.73306971278977, 48.1838483355168], [-3.73327425457046, 48.1838372936271], [-3.73339288768415, 48.1838311532918], [-3.73382465430422, 48.1837840021173], [-3.73413982385002, 48.1837431811857], [-3.73416969061106, 48.1837393423969], [-3.73417009818185, 48.1837392558798], [-3.73424416805291, 48.1837142141484], [-3.73449136560662, 48.1836307875219], [-3.73459641872941, 48.1836243747852], [-3.73475528663114, 48.1836149031024], [-3.73508547919139, 48.1836515631883], [-3.73549210512159, 48.1837204267043], [-3.73555351299474, 48.1837441161653], [-3.73553588388847, 48.1838586601083], [-3.73541918910584, 48.1845724844406], [-3.73535762993358, 48.1848143013051], [-3.73531295281074, 48.1848827088381], [-3.7350625243932, 48.1848785869773]], [[-3.72925211502078, 48.1841936408449], [-3.72925202753542, 48.1841936431335], [-3.72905894861286, 48.1845421744863], [-3.72925211502078, 48.1841936408449]], [[-3.73502365976846, 48.1840632903695], [-3.73180418115953, 48.1841360370525], [-3.7350236804856, 48.1840637903968], [-3.73502365976846, 48.1840632903695]]]]}}]}
Сценарий:
length = []
for line in open('polygons.json', 'r'):
length.append(json.loads(line))
neu = []
with open('polygons.json', 'r') as infile:
chunkSize = 2
for line in infile:
data = json.loads(line)
for feature in data['features']:
#array.append(feature['geometry']['type'])
#test.append(feature['geometry']['coordinates'])
poly1 = shapely.geometry.asShape(feature['geometry'])
neu.append(poly1)
boundary = cascaded_union(neu)
#print(boundary.geom_type)
geojson_out = geojson.Feature(geometry=boundary, properties={})
for i in range(0, len(length), chunkSize):
with open('polygons.json' + '_' + str(i // chunkSize) + '.json', 'w') as outfile:
json.dump(length[i:i + chunkSize], outfile)