Ejemplo n.º 1
0
    def query(self,
              start_date: str,
              end_date: str,
              product: str,
              provider: str = 'LPDAAC_ECS',
              bbox: List = []) -> List[Dict]:
        """ 
        Search CMR database for spectral MODIS tiles matching a temporal range,
        defined by a start date and end date. Returns metadata containing the URL of
        each image.

        Parameters
        ----------
        start_date: string
            Start date yyyy-mm-dd
        end_date: string
            End date yyyy-mm-dd
        product: string
            Product name 
        provider: string
            Provider (default is 'LPDAAC_ECS')
        bbox: List[float]
            Bounding box [lower_left_lon, lower_left_lat, upper_right_lon, upper_right_lat]

        Returns
        ----------
        List[Dict]
            List of granules
        """
        q = GranuleQuery()
        prod, ver = product['products'][0].split('.')
        q.short_name(prod).version(ver)
        q.temporal(f"{start_date}T00:00:00Z", f"{end_date}T23:59:59Z")
        if (len(bbox) >= 4):
            q.bounding_box(*bbox[:4])
        _granules = q.get_all()

        # filter dates
        if 'day_offset' in product.keys():
            day_offset = products[product]['day_offset']
        else:
            day_offset = 0
        granules = []
        for gran in _granules:
            # CMR uses day 1 of window - correct this to be middle of window
            date = (dateparser(gran['time_start'].split('T')[0]) +
                    datetime.timedelta(days=day_offset)).date()
            if (dateparser(start_date).date() <= date <=
                    dateparser(end_date).date()):
                granules.append(gran)
        logger.info("%s granules found within %s - %s" %
                    (len(granules), start_date, end_date))
        return granules
Ejemplo n.º 2
0
def query(start_date, end_date, product='MCD43A4.006', provider='LPDAAC_ECS'):
    """ Search CMR database for spectral MODIS tiles matching a temporal range,
    defined by a start date and end date. Returns metadata containing the URL of
    each image.
    """
    q = GranuleQuery()
    prod, ver = product.split('.')
    q.short_name(prod).version(ver)
    q.temporal('%sT00:00:00Z' % str(start_date),
               '%sT23:59:00Z' % str(end_date))
    _granules = q.get_all()

    # filter dates
    day_offset = products[product]['day_offset']
    granules = []
    for gran in _granules:
        # CMR uses day 1 of window - correct this to be middle of window
        date = (dateparser(gran['time_start'].split('T')[0]) +
                datetime.timedelta(days=day_offset)).date()
        if (start_date <= date <= end_date):
            granules.append(gran)
    logger.info("%s granules found within %s - %s" %
                (len(granules), start_date, end_date))
    return granules