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"""
Tool to download all local datasets and save them within the vega_datasets
source tree.
Usage:
$ python download_datasets.py
"""
import json
from os.path import abspath, join, dirname
import sys
from urllib.request import urlretrieve
import json
sys.path.insert(1, abspath(join(dirname(__file__), "..")))
from vega_datasets.core import Dataset
DATASETS_TO_DOWNLOAD = [
"airports",
"anscombe",
"barley",
"burtin",
"cars",
"crimea",
"driving",
"iowa-electricity",
"iris",
"la-riots",
"ohlc",
"seattle-temps",
"seattle-weather",
"sf-temps",
"stocks",
"us-employment",
"wheat",
]
def _download_datasets():
"""Utility to download datasets into package source"""
def filepath(*args):
return abspath(join(dirname(__file__), "..", "vega_datasets", *args))
dataset_listing = {}
for name in DATASETS_TO_DOWNLOAD:
data = Dataset(name)
url = data.url
filename = filepath("_data", data.filename)
print("retrieving data {0} -> {1}".format(url, filename))
urlretrieve(url, filename)
dataset_listing[name] = "_data/{0}".format(data.filename)
with open(filepath("local_datasets.json"), "w") as f:
json.dump(dataset_listing, f, indent=2, sort_keys=True)
if __name__ == "__main__":
_download_datasets()
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