Retrieve feature and merge with vito_download project

[sbrunato]

Original report by Mickaël Savinaud (Bitbucket: savmickael, GitHub: savmickael).

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https://github.com/DHI-GRAS/vito_download

[sbrunato]

vito_download is a Python package dedicated to search and download products from the VITO pool websites http://land.copernicus.vgt.vito.be/PDF/datapool and https://www.vito-eodata.be/PDF/datapool/

This is its example usage:

import vito_download as vito
import xarray as xr

url = vito.build_url(product='SWI', year=2016, month=1, day=1)

local_files = vito.download_data(url, username='USERNAME', password='PASSWORD',
                                 download_dir='.', include='*.nc')

dataset = xr.open_dataset(list(local_files)[0])

data = dataset['SWI_010'].values.squeeze()

The products supported are apparently listed in its config.py module:

product_url = {
    'Water_Bodies_Global': 'https://land.copernicus.vgt.vito.be/PDF/datapool/Water/Water_Bodies/Water_Bodies_1km_Global_V2',
    'SWI': 'http://land.copernicus.vgt.vito.be/PDF/datapool/Vegetation/Soil_Water_Index/Daily_SWI_12.5km_Global_V3',
    'SWI10': 'http://land.copernicus.vgt.vito.be/PDF/datapool/Vegetation/Soil_Water_Index/10-daily_SWI_12.5km_Global_V3',
    'SSM': 'http://land.copernicus.vgt.vito.be/PDF/datapool/Vegetation/Surface_Soil_Moisture/BioPar_SSM1km_V1_Global',
    'Proba-V-S1-TOC': 'http://www.vito-eodata.be/PDF/datapool/Free_Data/PROBA-V_100m/S1_TOC_100_m_C1',
    'Proba-V-S1-TOC-NDVI': 'http://www.vito-eodata.be/PDF/datapool/Free_Data/PROBA-V_100m/S1_TOC_NDVI_100_m__C1',
    'Proba-V-S5-TOC': 'http://www.vito-eodata.be/PDF/datapool/Free_Data/PROBA-V_100m/S5_TOC_100_m_C1',
    'Proba-V-S5-TOC-NDVI': 'http://www.vito-eodata.be/PDF/datapool/Free_Data/PROBA-V_100m/S5_TOC_NDVI_100_m_C1'
}

Two features that stand out are:

• it uses an async crawler bundled in the package itsybitsy
• it allows to download products concurrently with a ThreadPoolExecutor

Concurrent downloading is already mentioned in #146